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• What are "Excess Fragments" in defragmenting a hard drive?

  - by Andrew Swift

  I'm defragmenting my hard drive (XP SP3) with PerfectDisk 7.0, and it finds 816,659 excess fragments when I ask for an analysis. [update] Specifically, it shows that the 1TB disk is 14% fragmented with 19693 fragments and 816,659 excess fragments. About 20% of the disk is still free space. What does excess fragments refer to? What is the difference between fragments and excess fragments? I have had problems in the past where I defragmented a fragmented disk and many files were corrupted. It seemed as though "excess fragments" referred to orphan pieces, where the program couldn't find out where to put them. If that was true, then defragmenting a disk resulted in many incomplete files, and in fact I defragmented a disk full of MP3's and got a lot of corrupted files as a result. Instead, I started to simply format a separate disk and copy everything from one to the other. That way there were no orphan bits, and no file corruption. Does anybody know what "excess fragments" really are?

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• How do I increase the buffer size for domain sockets in OS X 10.6

  - by Chas. Owens

  In Linux I have no problem dumping tons of data into a domain socket, but the same code on OS X 10.6.2 blows up after about 65 records. The socket reader code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; unlink "foo"; my $sock = IO::Socket::UNIX->new ( Local => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; while (<$sock>) { chomp; print "[$_]\n"; } And the client code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; my $sock = IO::Socket::UNIX->new ( Peer => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; for my $i (1 .. 1_000_000) { print $sock "$i\n" or die $!; } close $sock; The error message I get is No buffer space available at write.pl line 15.. It seems fairly obvious that there is a difference in the buffer size between Linux and OS X, but I don't know how to set it OS X (or what the possible negative side effects might be).

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• Exchange 2010 Hub cannot deliver to Exchange 2007 Hub - "451 5.7.3 Cannot achieve Exchange Server authentication"

  - by Graeme Donaldson

  We have an existing Exchange 2007 server in Site A (exch07). I've installed an Exchange 2010 server in Site B (exch10). Both servers have the CAS, Mailbox and Hub roles. Messages sent via SMTP on exch10 which are destined for mailboxes on exch07 are queued with the "Last Error" reported in Queue Viewer as '451 4.4.0 Primary target IP address responded with: "451 5.7.3 Cannot achieve Exchange Server authentication." Attempted failover to alternate host, but that did not succeed. Either there are no alternate hosts, or delivery failed to all alternate hosts.' I've found that some people have resolved this by creating new Receive Connectors which are scoped specifically to apply to connections from the remote hub/s, but I have had no luck doing this. Specifically I created new receive connectors on both servers with the following settings: Remote IP = IP/s of remote server Authentication = "Transport Layer Security (TLS)" and "Exchange Server authentication" Permission Groups = "Exchange servers" and "Legacy Exchange Servers" This made no difference, I see the same error message. What am I missing? Update: We noticed that the Application log had this error message from MSExchangeTransportService: Microsoft Exchange could not find a certificate that contains the domain name exch07.domain.local in the personal store on the local computer. Therefore, it is unable to support the STARTTLS SMTP verb for the connector exch10 with a FQDN parameter of exch07.domain.local. If the connector's FQDN is not specified, the computer's FQDN is used. Verify the connector configuration and the installed certificates to make sure that there is a certificate with a domain name for that FQDN. If this certificate exists, run Enable-ExchangeCertificate -Services SMTP to make sure that the Microsoft Exchange Transport service has access to the certificate key. It turns out that the default self-signed certificate was no longer enabled for the SMTP service for some reason. After enabling the self-signed certificate for SMTP, we no longer get the error in the event logs, but delivery is still failing with the same error message. Update 2: I put a mailbox on exch10 and attempted to deliver a message via SMTP on exch07 and I get the same error.

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• Does AMD Cool n Quiet Slow Down Your System?

  - by Software Monkey

  I discovered today that having AMD Cool n Quiet enabled in my BIOS appears to be slowing down my Windows XP SP2 system by about 29% on memory & CPU intensive workloads. I was wondering if (a) anyone else had encountered this, (b) anyone can offer an explanation, (c) there are any negatives I need to be aware of if I keep AMD CnQ disabled. With some superficial testing so far, I don't immediately notice any difference with CnQ off (other than the performance being what I expected from this new hardware). It seems to ramp up the CPU fan a little bit as my program maxes out 1 core, but that's the same as with CnQ on. And when I let the system idle the CPU fan slows down and the systems as quiet as a mouse (after years of 6 small fans churning like they want to go into orbit it's nice to again have a system where I can hear the HDDs seeking). Bonus question: Does CnQ cause issues with system stability? I ask because the reason I disabled it was because I have had a few freezes and 1 spontaneous reboot with my new hardware.

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• Building a PC, advice on SSD/Hybrid Hard Drives

  - by Jamie Hartnoll

  I am looking at building a new PC, it's mainly for office (graphics heavy) use and programming. Looking for good performance with opening and closing programs and files as well as a fast boot. I plan to have 3 primary hard drives Windows 7 Programs (photoshop etc) Current Files (There'll also be a large storage capacity back up drive, but this will be the Seagate drive I already have.) So, my question is, looking at standard "old fashioned" hard drives and SSD drives, obviously there's a massive price difference. I have been looking at drives like this: http://www.ebuyer.com/268693-corsair-120gb-force-3-ssd-cssd-f120gb3-bk-cssd-f120gb3-bk and this: http://www.ebuyer.com/321969-momentus-xt-750gb-sata-2-5in-7200rpm-hybrid-8gb-ssd-in-st750lx003 Having no experience of using either I don't know what's the most efficient thing to go for. Clearly the SSD will have better performance, but: If, for example, I had an SSD for Windows (say about 100gB), that would clearly give me the boot speed I want, then I guess my real questions are: If I were to buy one more SSD, would it give the greatest improvement on standard performance if used to store programs, or currently used files? Given that the OS is on an SSD, should I not bother with the 3 drives and instead, partition that Hybrid drive to store programs and currently used files on it? Obviously, option two is cheaper and option one could cause me storage issues, but that's when I can dump files I am not currently using onto another drive. Any, I am open to suggestions... so what do you suggest?!

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• Installing WinPcap on Windows 8

  - by Dave Robinson

  I know there has been lots of discussion already on installing WinPcap on Windows 8. I'm running the RTM version. I was able to install WinPcap without a hitch by using the Windows 7 compatibility mode. Since then, I've noticed that WinPcap has stopped running and is actually no longer even installed. I tried installing it again, but now it continues to tell me that WinPcap does not work with my version of Windows. Compatibility modes and admin privileges make no difference. The only thing I remember doing to my system was installed 900MBs of Windows Updates. Does anyone have any ideas about what I might do to get WinPcap installed? I've already ensured that the compatibility mode settings I changed were in effect for all users. I've already ensured that "run this program as an administrator" is checked on the compatibility tab for all users. I've also tried installing WinPcap 4.1.2 and 4.1.1. No success with either.

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• Different network response for indentical co-located machines

  - by Santosh

  We have a situation as follows: We have a two different virtual machines (VMs) on some remote server farm. The machines are identical in terms of hardware/software(OS) configurations. We have a J2EE application running on JBoss on each of those two machines. These two applications are of different version sav V1 on VM1 and V2 on VM2. We observed some degraded response time for application V2 when accessed via public URL. When we accessed the application through a secured VPN, there is hardly any difference. The bandwidth test (upload/download speed, ping etc) shows that VM1 is responding better when accessed via secured VPN. We concluded that the application does not seem to have performance issue. Because, it that's the case the performance degradation should also be there when access via VPN. So we concluded its the network problem. But since those two identical VMs are on same network we are looking for the reasons for different responses. My question is, given the above situation, what could be reasons for such a behavior ?

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• Is there an high quality natural text reader for the mac?

  - by Another Registered User

  I'm reading about 150 pages of text on screen, every day. I will have to read about 15.000 in the next upcoming months. No joke. Well, the problem is this: I suffer from a sort of attention deficit hyperactivity disorder which forces me to read every sentence up to 10 times until I really get it. Mac OS X Snow Leopard has a built-in text reader with the name "Alex". Although it is already pretty good quality, I know there are far better natural sounding voices out there. I have heard already voices that are absolutely amazing compared to Alex. They're so good, that you can't tell anymore the difference between a real person or a computer. Alex still has this "metal factor" in its voice, which makes my ears hurt after 8 hours of listening. The next problem with Alex is, that he never makes a break after a sentence. Also, it's not possible to think about a sentence and then continue reading. It's also not possible to have him repeat a sentence, without tedious text selection and shortcut usage. Actually, the best tool I can imagine would have the option to read a sentence and move on to the next one after pressing a special key, OR repeating the previously one after pressing a special key. That would help so much! And if that's even with one of those bell lab / AT&T / whatever super-natural voices, even better! But it would be already a great relief if there was just a better tool to control Alex. To let him make breaks after sentences or let him speak big chunks of text sentence-by-sentence with fine-grained control over repetition and moving on. Is there anything?

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• Excessive PHP errors in Joomla

  - by Rodnower

  I have Joomla 2.5 installed on Windows 7 with Apache 2 and PHP 5. I have countless PHP errors in the log like the following: [01-Sep-2012 19:33:55 UTC] PHP Strict standards: Only variables should be assigned by reference in C:\ammon_dev\ammon\plugins\system\jquery\jquery.php on line 24 [01-Sep-2012 19:33:55 UTC] PHP Stack trace: [01-Sep-2012 19:33:55 UTC] PHP 1. {main}() C:\ammon_dev\ammon\administrator\index.php:0 [01-Sep-2012 19:33:55 UTC] PHP 2. JAdministrator->route() C:\ammon_dev\ammon\administrator\index.php:40 [01-Sep-2012 19:33:55 UTC] PHP 3. JApplication->triggerEvent() C:\ammon_dev\ammon\administrator\includes\application.php:106 [01-Sep-2012 19:33:55 UTC] PHP 4. JDispatcher->trigger() C:\ammon_dev\ammon\libraries\joomla\application\application.php:670 [01-Sep-2012 19:33:55 UTC] PHP 5. JEvent->update() C:\ammon_dev\ammon\libraries\joomla\event\dispatcher.php:161 [01-Sep-2012 19:33:55 UTC] PHP 6. call_user_func_array() C:\ammon_dev\ammon\libraries\joomla\event\event.php:71 [01-Sep-2012 19:33:55 UTC] PHP 7. plgSystemJquery->onAfterRoute() C:\ammon_dev\ammon\libraries\joomla\event\event.php:71 I tried disabling error logging in php.ini: error_reporting = E_ALL & ~E_DEPRECATED & ~E_STRICT Unfortunately that does not make a difference. Joomla isn’t in debug mode, and I am sure that I’m editing the correct copy of php.ini because other changes I make to it take effect. Any ideas why I am getting so many errors or how to stop it from exploding the log?

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• Permissions Required for Sharepoint Backups

  - by Wyatt Barnett

  We are in the process of rolling out an extranet for some of our partners using WSS 3.0 as the platform. We already use it internally for a variety of things, and we are using the following powershell script to backup the server: param( $url="http://localhost", $backupFolder="c:\" ) [System.Reflection.Assembly]::LoadWithPartialName("Microsoft.SharePoint") $site= new-Object Microsoft.SharePoint.SPSite($url) $names=$site.WebApplication.Sites.Names foreach ($name in $names) { $n2 = "" if ($name.Length -eq 0) { $n2="ROOT" } else { $n2 = $name } $tmp=$n2.Replace("/", "_") + ".sbk" $saveas = "" if ($backupFolder.Length -eq 0) { $saveas = $tmp } else { $saveas = join-path -path $backupFolder -childPath $tmp } $site.WebApplication.Sites.Backup($name, $saveas, "true") write-host "$n2 backed up to $saveas." } This script works perfectly on the current installation running as our domain backup user. On the new box, it fails when ran as the backup user--claiming "The web application located at http://extranet/" could not be found. That url does, in fact, work so I'm fairly certain it isn't anything that dumb and rather is some permissions issue. Especially because, when executed from my security context, the script works perfectly. I have tried making the backup user a farm owner, as well as added him to the various site collection admin groups on the extranet. The one major difference between the extranet and the intranet server is that the extranet has an alternative access mapping (for https://xnet.example.com) and also uses forms authentication for that mapping. Anyhow, what permissions (or other voodoo) do I need to setup to get this script to work properly?

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• Apache web logs "GET http/1.1" 200 error?

  - by songdogtech

  I've got some puzzling (at least to me) errors that show up in my webserver logs. What's puzzling is that they show my error page being referenced, but that error page doesn't show up as being displayed in hits on statcounter.com. Can someone tell me the difference in these two kinds of errors? Or is only one a "real" error? This is in WordPress, and I have my 404.php file in my theme redirecting to a static Wordpress page at mydomain.com/error/ These first two log entries show /error/, but a "hit" on my /error/ page doesn't show in my webstats. The page referenced - /2009/08/delete-preference-files/ - exists, and shows a "hit" at statcounter. 92.17.232.242 - - [13/Mar/2010:01:45:43 -0800] "GET /error/ HTTP/1.1" 200 4012 "http://markratledge.com/2009/08/delete-preference-files/" "Mozilla/5.0 (Windows;U; Windows NT 5.1; en-US; rv:1.9.1.8) Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729)" 732 4432 92.17.232.242 - - [13/Mar/2010:01:47:11 -0800] "GET /error/ HTTP/1.1" 200 4012 "http://markratledge.com/wp-content/themes/default/style.css" "Mozilla/5.0(Windows; U; Windows NT 5.1; en-US; rv:1.9.1.8) Gecko/20100202 Firefox/3.5.8 (.NET CLR 3.5.30729)" 861 4432 These are two error entries that display my /error/ page, because /error/ gets a "hit" in statcounter. The page /cookies/ doesn't exist. 72.174.16.202 - - [13/Mar/2010:10:53:37 -0800] "GET /cookies HTTP/1.1" 302 21 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)" 394 642 72.174.16.202 - - [13/Mar/2010:10:53:38 -0800] "GET /error/ HTTP/1.1" 200 4012 "-" "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9.2) Gecko/20100115 Firefox/3.6 (.NET CLR 3.5.30729)" 393 4432

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• Windows 7 blank dvi screen

  - by user99

  I've just upgraded to Windows 7 Ultimate 64 bit. I had an issue during installation; after setup rebooted instead of going to the 'Completing installation' screen I just got a blank screen. I eventually(!) figured out that this meant 'un-plug your second monitor to proceed'. When I did this, installation completed in a snap and everything runs fine. However, whenever I plug my second monitor into my PC, it gets no signal, the the primary monitor removes all windows. icons, the taskbar and the cursor just shows the desktop wallpaper. I'm running a GTS8800 512mb, with the latest drivers (197 IIRC). The monitors are identical, and both plug into DVI sockets on the graphics card, the only difference is I connect one using a straight DVI cable and the other using a VGA cable and a VGA-DVI converter. It's the DVI cabled one that has the issues (if I plug it in by itself it gets no signal). Everything was working fine before I upgraded to Windows 7 (I used to run XPSP2). Anyone have any ideas?

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• Regular Windows 7 BSOD with Shrew VPN client

  - by Junto

  The Shrew VPN client appears to be a good alternative to the Cisco VPN Client on x64 Windows 7. However, since installing it I've seen fairly regular BSODs. Minidump attached: Microsoft (R) Windows Debugger Version 6.11.0001.404 AMD64 Copyright (c) Microsoft Corporation. All rights reserved. Loading Dump File [D:\Temp\020810-23431-01.dmp] Mini Kernel Dump File: Only registers and stack trace are available Symbol search path is: SRV*d:\symbols*http://msdl.microsoft.com/download/symbols Executable search path is: Windows 7 Kernel Version 7600 MP (8 procs) Free x64 Product: WinNt, suite: TerminalServer SingleUserTS Built by: 7600.16385.amd64fre.win7_rtm.090713-1255 Machine Name: Kernel base = 0xfffff800`0285f000 PsLoadedModuleList = 0xfffff800`02a9ce50 Debug session time: Mon Feb 8 18:08:12.887 2010 (GMT+1) System Uptime: 0 days 7:52:06.120 Loading Kernel Symbols ............................................................... ................................................................ .............. Loading User Symbols Loading unloaded module list .... ******************************************************************************* * * * Bugcheck Analysis * * * ******************************************************************************* Use !analyze -v to get detailed debugging information. BugCheck A, {0, 2, 0, fffff800028d50b6} Unable to load image \SystemRoot\system32\DRIVERS\vfilter.sys, Win32 error 0n2 *** WARNING: Unable to verify timestamp for vfilter.sys *** ERROR: Module load completed but symbols could not be loaded for vfilter.sys Probably caused by : vfilter.sys ( vfilter+29a6 ) Followup: MachineOwner Machine is a brand spanking new Dell Precision T5500. Superuser appears to have several recommendations for the Shrew VPN Client as an alternative to the Cisco VPN client on 64 bit machines, so I wondered if anyone here has seen this problem and possibly found a solution to the problem? I've decided to run the VPN client under Windows 7 compatibility mode for the moment (Vista SP2) with administrator privileges to see if it makes a difference. Oddly, the VPN doesn't necessarily need to be connected. I've noticed it when browsing using Google Chrome and Internet Explorer, usually when I open up a new tab. If it carries on I think I'll be forced to shell out the 120 EUR for the NCP Client instead.

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• AMD Fusion GPU passthrough to KVM or Xen

  - by BigChief

  Has anyone successfully gotten a passthrough working with the GPU portion of AMD's Fusion APUs (the E-350 is my target) on top of a Linux hypervisor? IE, I want to dedicate the GPU to one VM only, excluding all other VMs as well as the host. I know PCI passthrough can work with patches / kernel rebuilds for Xen and KVM. However, since the GPU is on the same chip, I don't know if the host OS will see it as PCI. I know there are a number of tangential issues here, such as: Poor Fusion drivers in Linux at the moment Unsuccessful patching efforts seem common VT-d / IOMMU is required and (from my reading) is supported on the APU, but the motherboard may not offer it KVM doesn't appear to support primary graphics cards, only secondary graphics cards (described here) However, I'd like to hear from anyone who has messed with this, even failed attempts. Fedora + KVM is my preferred virtualization platform but I'm willing to change that if it makes a difference. EDIT: The goal is to do this for a Windows 7 guest (I know it's asking a lot). Regardless, just assume this is HVM, not PV.

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• Error - "IR Hardware not detected" - but it's installed/working

  - by Robert

  I am trying to do: Settings-TV-Set up TV signal. During this process I am getting the error "IR Hardware not detected." With the remote, I can select the "try again" button (to re-detect) and it tries again, so the remote works. Plugging in the "IR blaster" doesn't change anything. (I wouldn't expect any difference, but I read a post which said you needed that. I will get Media Center to change channels if I can get that working - but first things first.) I was able to do the setup months ago when I had cable. and everything was fine. I just got DirecTV. (BTW - During the above process, Media Center detects the signal coming in on channel 3. Windows XP Media Center SP3. The TV Tuner card is a Pinnacle TCTV HD PCI. Everything - and I mean everything - has the latest firmware and drivers - as of 4 months ago when I fixed a different problem. So I DON"T WANT TO HEAR the standard answer to check drivers/firmware. THANK YOU.) Thanks for any help.

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• Some HTTPS connections via NAT fail, but work on firewall itself.

  - by hnxn

  Hi, I am having trouble establishing some HTTPS connections from internal machines, even though these same connections work if initiated on the firewall itself. The firewall machine is running Ubuntu 10.04.1 and shorewall 4.4.6. The internet connection is Bell PPPoE DSL (in Canada). I have tried various MTU settings, it doesn't seem to make any difference. Other protocols (HTTP, FTP, etc) generally work. The problem seems to be limited to certain sites; this one never works from an internal machine, but always works from the firewall itself: From internal machine: $ wget https://images.fedex.com/images/ascend/shared/headers/nxgen/corp_logo.gif --2011-01-13 20:51:31-- https://images.fedex.com/images/ascend/shared/headers/nxgen/corp_logo.gif Resolving images.fedex.com... 184.24.96.69 Connecting to images.fedex.com|184.24.96.69|:443... connected. ^C From firewall: $ wget https://images.fedex.com/images/ascend/shared/headers/nxgen/corp_logo.gif --2011-01-13 20:58:28-- https://images.fedex.com/images/ascend/shared/headers/nxgen/corp_logo.gif Resolving images.fedex.com... 184.24.96.69 Connecting to images.fedex.com|184.24.96.69|:443... connected. HTTP request sent, awaiting response... 200 OK Length: 840 [image/gif] Saving to: `corp_logo.gif' 2011-01-13 20:58:28 (149 MB/s) - `corp_logo.gif' saved [840/840] This URL always works from both internal and firewall: https://encrypted.google.com/images/logos/ssl_logo_lg.gif Any troubleshooting tips would be greatly appreciated!

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• MOSS2007 tries to use ActiveDirectory when I have configured an alternative membership provider

  - by glenatron

  I've got a MOSS site that I am trying to configure using Forms authentication and absolutely any kind of membership provider whatsoever. Thus far ActiveDirectory has proved obstructively difficult so I've just whipped up a simple stub membership provider and put it in the GAC. It's a very basic and simple provider but it works fine with an ASP.Net site, I just can't make it work with Sharepoint. On Sharepoint I get the following error when I look for StubProvider:Bob ( or anything else for that matter) from the "Policy For Web Application" people picker: Error in searching user 'StubProvider:bob' : System.ComponentModel.Win32Exception: Unable to contact the global catalog server at Microsoft.SharePoint.Utilities.SPActiveDirectoryDomain.GetDirectorySearcher() at Microsoft.SharePoint.WebControls.PeopleEditor.SearchFromGC(SPActiveDirectoryDomain domain, String strFilter, String[] rgstrProp, Int32 nTimeout, Int32 nSizeLimit, SPUserCollection spUsers, ArrayList& rgResults) at Microsoft.SharePoint.Utilities.SPUserUtility.SearchAgainstAD(String input, SPActiveDirectoryDomain domainController, SPPrincipalType scopes, SPUserCollection usersContainer, Int32 maxCount, String customQuery, TimeSpan searchTimeout, Boolean& reachMaxCount) at Microsoft.SharePoint.Utilities.SPActiveDirectoryPrincipalResolver.SearchPrincipals(String input, SPPrincipalType scopes, SPPrincipalSource sources, SPUserCollection usersContainer, Int32 maxCount, Boolean& reachMaxCount) at Microsoft.SharePoint.Utilities.SPUtility.SearchPrincipalFromResolvers(List`1 resolvers, String input, SPPrincipalType scopes, SPPrincipalSource sources, SPUserCollection usersContainer, Int32 maxCount, Boolean& reachMaxCount, Dictionary`2 usersDict). The Provider is named as Authentication Provider for the Site Collection in question. As far as I can tell this is because Sharepoint is still trying to access ActiveDirectory rather than talking to the provider I'm asking it to use. My Sharepoint Central Administration section includes this: <membership> <providers> <add name="StubProvider" type="StubMembershipProvider.Provider, StubMembershipProvider, Version=1.0.0.0, Culture=neutral, PublicKeyToken=5bd7e2498c3e1a03" /> </providers> </membership> And also: <PeoplePickerWildcards> <clear /> <add key="StubProvider" value="%" /> </PeoplePickerWildcards> Is there a clear reason why this would not be accessible from the PeoplePicker or why it is still trying to use ActiveDirectory? I've made sure I reset IIS and even restarted the server to see if either of those helped but they made no difference.

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• Building a PC for Work and play? [closed]

  - by Derek Organ

  Ok, Its been a long time since I build my own PC so I'm looking to get back into it again and build a new one. First off budget is about €800 excluding the monitor and windows 7 licence and mouse. (just bought a new g500) I plan on using my computer for work, lots of applications open at once but none particularly excessive (photoshop being the most demanding, mostly coding tools) I also use it for some gaming, e.g. COD, Starcraft etc. One thing I do want to do eventually is get a really good monitor with hight resolution and maybe 27" so the graphics card needs to be able to make best use of that. So a few questions 1) Is the bottle neck in performance mostly still the harddrives? 2) Aren't most processors e.g. i5 etc even i3 so far a head of other bottlenecks it makes litte difference the higher you go. Isn't the Graphics card dealing with heavy graphics so what really slows because of a slow CPU? So from this my thinking is to get a SSD drive as my primary drive for OS etc and have loads of memory e.g. 6-8GB and a decent mid level graphics card? It doesn't seem at my level worth spending much on CPU and any other parts really. I basic parts off the top of my head Case, Motherboard CPU SSD Drive SATA Drive Power Supply Memory Cooling (fan?) Graphics Card Network Card Keyboard DVD drive Mouse Windows Monitor Am I missing anything? Any helpful tips or general education much appreciated. Thanks, Derek

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• CentOS iscsi initiator has session but there is no block device

  - by jcalfee314

  I have installed the scsi-target-utils package on CentOS and I used it to perform a discovery. The discovery did give me an active session. I restarted the iscsi service but I do not see any new devices (fdisk -l). I see in /var/log/messages that my connection is operational now. I'm not sure how to debug this further. Can someone direct me into fixing this? discovery: iscsiadm -m discovery -t sendtargets -p 192.168.0.155 returns: 192.168.0.155:3260,-1 iqn.2009-02.com.twinstrata:cloudarray:sn-1d07c1b62d4ec8f3 Just to verify it actually worked: iscsiadm -m session returns tcp: [1] 192.168.0.155:3260,1 iqn.2009-02.com.twinstrata:cloudarray:sn-1d07c1b62d4ec8f3 restarting as the directions say to do: service iscsi restart output written to /var/log/message Stopping iscsi: Sep 20 12:14:22 localhost kernel: connection1:0: detected conn error (1020) [ OK ] Starting iscsi: Sep 20 12:14:22 localhost kernel: scsi1 : iSCSI Initiator over TCP/IP Sep 20 12:14:22 localhost iscsid: Connection1:0 to [target: iqn.2009-02.com.twinstrata:cloudarray:sn-1d07c1b62d4ec8f3, portal: 192.168.0.155,3260] through [iface: default] is shutdown. Sep 20 12:14:22 localhost iscsid: Could not set session2 priority. READ/WRITE throughout and latency could be affected. [ OK ] [root@db iscsi]# Sep 20 12:14:23 localhost iscsid: Connection2:0 to [target: iqn.2009-02.com.twinstrata:cloudarray:sn-1d07c1b62d4ec8f3, portal: 192.168.0.155,3260] through [iface: default] is operational now Ran a login command: iscsiadm -m node -T iqn.2009-02.com.twinstrata:cloudarray:sn-1d07c1b62d4ec8f3 -p 192.168.0.155 -l No errors, no logging occurred. Next I compared the output from "fdisk -l|egrep dev" both with the iscsi session and without. There is no difference. I suppose I could just look in /etc/mtab. Any ideas on how I can get an iscsi device?

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• Using GUI ftp on Win7 and Vista without additional software

  - by Stephen Jones

  Goal: provide a 'no-software' method for 'less technical' users to access password protect ftp location from Win7 and Vista (existing approach for WinXP works). 'No software' method to mean without installing additional software (e.g. FileZilla, WinSCP) - the solution is supplied to external non-technical users. WinXP (works): Using Windows Explorer, WinXP supports non-technical ftp access by pasting: ftp://username:[email protected] into the address bar. The remote ftp site's files / directory structure becomes available and can be copied to / from easily (in the style of local file copy / paste) by a 'less technical' user. Win7 / Vista (doesn't work): Pasting the same URL into the Windows Explorer on Win7 or Vista causes an error: An error occurred opening that folder on the FTP server. Make sure you have permission to access that folder. Details: The connection with the server was reset. Notes: a) The same username/password/server typed from the (DOS) command line achieves access to the server, but this is a more 'technical' solution than desired. I am looking for a WinXP equivalent solution. b) Under 'Control Panel' / 'Internet options' / 'Advanced' tab - the boxes for 'Enable FTP folder view' and 'Use Passive FTP' are ticked (enabled) c) Adding an inbound firewall rule for local port 20 (TCP) was attempted with no difference in results (i.e. failure)

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• "Safe" personal router use on apartment-wide network

  - by noisetank

  I recently moved into an apartment with internet included in my rent. This was a boon at first, but now I'm feeling limited. To get devices connected (wired or wireless), I have to whitelist the MAC addresses on mycampusnet.com. This is annoying (considering I'm well over the 10 device limit including my roommate's stuff), but what's really driving me mad is that I don't seem to have any semblance of a "local" network. I've relied heavily on static IPs and port forwarding in the past (accessing NAS and remote desktop) and (as far as I can understand), that functionality is nonexistent without my router set up. Also, as my wired and wireless devices don't always seem to make it onto the same subnet, I'm unable to use any of my iDevices with my Apple TV (I can, however, mirror to no less than four strangers' Apple TVs at any moment, which is a whole other level of discomforting). I've talked to the head of the apartment complex and she told me that they personally don't have any issue with my using a router, but the provider (CampusConnect) does not currently allow it. Apparently, enough people have put in complaints/requests about the restriction (the apartments are for graduate students and University staff, many of which need to set up things like VPNs for work reasons) to open up some sort of ticket to get the functionality in place, but all the calls I've made to get status updates have been a waste of time. My question is: If I plugged my router into the apartment network, what would happen? I've been told already that personal routers would "interfere with the wireless" and that they would shut my port down if I used one, but is that a legitimate thing or just something made up that sounds real to keep the average Joe from pushing it further? I'm guessing there's some way of configuring my router to keep it from disrupting the rest of the network, but it's not something they want to tell me for obvious reasons. Am I right? And if so, what are the chances that they'd notice the difference in traffic or whatever and shut off my port?

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• BIND - why duplicate nameserver entries (@ and *)?

  - by user27465

  I had to manually tweak my DNS service providers BIND file. BIND file, created by professional hosting company, before: $ORIGIN mycoolsite.com. $TTL 300 @ SOA ns1.cheapreg.com. registry.cheapreg.com. ( ... ) @ IN 3600 NS ns1.cheapreg.com. @ IN 3600 NS ns2.cheapreg.com. @ IN 3600 A 199.9.99.85 @ IN 3600 A 199.9.99.86 * IN 3600 A 199.9.99.85 * IN 3600 A 199.9.99.86 www IN 3600 A 199.9.99.85 www IN 3600 A 199.9.99.86 BIND file, created by layman, after: $ORIGIN mycoolsite.com. $TTL 300 @ SOA ns1.cheapreg.com. registry.cheapreg.com. ( ... ) @ IN 3600 NS ns1.cheapreg.com. @ IN 3600 NS ns2.cheapreg.com. * IN 3600 A 219.94.116.50 * IN 3600 A 219.94.116.51 * IN 3600 A 219.94.116.52 The difference is that the "pro"-file has duplicated the nameserver entries, once for @, and once for *, and I haven't. Any reason I should also duplicate nameserver entries (@ and *) ?

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• Troubleshooting a Windows 7 PC that wouldn't sleep

  - by NPE

  I have a new Windows 7 PC that wouldn't sleep (not just automatically, but also when specifically told to). The screen goes black momentarily, but within two seconds the machine comes back as if nothing has happened. I tried powercfg energy. This produces some errors quoted at the bottom of this post, plus some warnings about timer resolution. There are no USB devices connected other than wireless keyboard + mouse (Logitech MK250); I tried unplugging them to no effect. The motherboard is Asus P7P55D-E. powercfg lastwake says "Wake History Count - 0", which I take to mean that it never actually went to sleep. I dual boot into Ubuntu, and was having exactly the same problem on the Linux side. That turned out to do with USB 3.0, which I've now disabled in the BIOS. This has solved the problem on the Ubuntu side of things, but made no difference to Windows 7. Any suggestions? Suspend:USB Device not Entering Suspend The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use. Device Name Generic USB Hub Host Controller ID PCI\VEN_8086&DEV_3B34 Host Controller Location PCI bus 0, device 29, function 0 Device ID USB\VID_8087&PID_0020 Port Path 1 USB Suspend:USB Device not Entering Suspend The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use. Device Name USB Root Hub Host Controller ID PCI\VEN_8086&DEV_3B34 Host Controller Location PCI bus 0, device 29, function 0 Device ID USB\VID_8086&PID_3B34 Port Path USB Suspend:USB Device not Entering Suspend The USB device did not enter the Suspend state. Processor power management may be prevented if a USB device does not enter the Suspend state when not in use. Device Name USB Composite Device Host Controller ID PCI\VEN_8086&DEV_3B34 Host Controller Location PCI bus 0, device 29, function 0 Device ID USB\VID_046D&PID_C52E Port Path 1,8

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• Can't connect to research.microsoft.com on home Qwest DSL connection

  - by rakingleaves

  I have a puzzling issue regarding accessing research.microsoft.com from my home Qwest DSL connection. By default, I frequently get timeouts when accessing research.microsoft.com from Firefox, Safari, or Chrome on my Mac. I also cannot access the site from Internet Explorer in a Windows VM. However, I am able to access the site through proxify.com, so I know the site is not down. Furthermore, I haven't noticed problems accessing other sites (in particular, www.microsoft.com works fine). Also, I can access research.microsoft.com when I'm connected to networks other than my home Qwest DSL connection. Together, the above make me suspect a problem with either my router (Airport Express) or, more likely, my ISP. Anyone have any thoughts on how I can narrow down the problem further? I could call my ISP and tell them the above, but my feeling is that probably won't get me very far. I can get by browsing research.microsoft.com through a proxy, but it would be nice to figure out what's going on here and fix the problem. Oh, the only relevant discussion I found via Google was here: http://forums.whirlpool.net.au/forum-replies-archive.cfm/1311734.html Update: Thanks to those who have tried to help! I found one other thing while Googling that may be vaguely relevant: http://thedaneshproject.com/posts/supportmicrosoftcom-not-working-behind-squid/ Disabling the Accept-Encoding headers in Firefox actually didn't make a difference for me. I just thought the above might spark some other ideas about how mishandling of HTTP headers somewhere might be causing this problem. Thanks again! Another update: In case anyone is still thinking about this; I've found that I can't surf research.microsoft.com using the links text-based browser, but I can reliably download individual files with wget. Maybe that helps?

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• Trouble cloning a Macbook Pro hard drive

  - by Mirko Froehlich

  I am trying to upgrade the 250GB hard drive in my MacBook Pro (early 2008 model) to a 750GB drive. I have connected the new drive via an external USB enclosure. The drive is recognized fine, I can format it, etc. However, every time I try to clone the drive, I am getting Input/Output errors. Before the clone operation, I have verified both the internal and the external drive using Disk Utility, and they both check out fine. After the clone operation, the external drive shows multiple "Invalid node structure" errors: I have tried two approaches for cloning the drive: Using Disk Utility, by starting from the OSX install DVD Using Carbon Copy Cloner The outcome is the same in both cases. The Carbon Copy Cloner logs show a handful of the following types of errors: rsync: mkstemp "<... an external filename ...>" failed: Input/output error (5) rsync: stat "<... an external filename ...>" failed: Input/output error (5) The actual files affected seem to be different across different runs of the application. Before the last run, I used Disk Utility to (once more) reformat the external drive and explicitly overwrite it with zeros, but this made no difference. I also tried running a surface scan in Tech Tool Pro overnight. It got about 2/3 of the way through before I had to disconnect the drive (had to take my MacBook Pro to work), but so far it didn't report any bad blocks. Assuming it scans the drive in the same order in which blocks would be allocated during actual use, it seems like if bad blocks were to blame for the clone failures, they should have been found already (given that the source drive is only 250GB). As a last attempt, I may try SuperDuper as well, although my understanding is that it uses the same underlying rsync approach as Carbon Copy Cloner, so it's unlikely to perform any better. Are there any other things I should try before I send the drive in for a replacement? Could these problems be caused by my internal drive, even though it works fine and checks out fine in Disk Utility?

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