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  • After adding a SSD to my MacBook, the HD never spins down.

    - by Chris Woods
    I added a SSD to my MacBook Pro 17 as the primary drive attached to the SATA controller. I moved the HD to the optical bay using the OptiBay from MCE Technologies which I use for my home directory. The problem I have encountered is the HD seems to never stop spinning. I have modified the sleep settings, hoping one of the various options would solve my problem without success. Any suggestions for me?

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  • Rules to choose hardware for OLTP systems (sql server)

    - by Roman Pokrovskij
    Ok. We know database size, number of concurrent users, number of transactions per minute; should choose number of processors, RAID, RAM, mirroring and clustering. There are no exact rule.. but may be there are no rules at all? In my practice in every case I have "legacy" system, and after some inspections and interview I can form an opinion how hardware and design can be improved. But every time when I meet "absolutely" new system (I guess there are no new systems, but sometimes are such tasks) I can't say anything trustful. So I'm interesting how people deal with such tasks? They map task on theirs experience or have some base formulas?

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  • How to store 250TB of data and develop a backup/recovery plan?

    - by luccio
    I'm really new to this topic, so big apology for stupid questions. I have a school project and I want to know how to store 250TB of data with life-cycle for 18 months. It means every record is stored for 18 months and after this period of time can be deleted. There are 2 issues: store data backup data Due to amount of data I will probably need to combine data tapes and hard drives. I'd like to have "fast" access to 3 month old data, so ~42TB on disk. I really don't know what RAID should I use, or is here any better solution than combining disk and data tapes? Thanks for any advice, article, anything. I'm getting lost.

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  • lightweight access point?

    - by Joelio
    Im moving from an all in one to a router + access point. In doing googling and reasearch and talking to friends I ended up with router - cisco rv016 wifi access point - airnet 1142 lightweight access point. (lap1142n) In trying to set all this up and reading I think I bought the wrong access point. It seems I need a wireless controller? Can someone confirm that I should not have bought the lightweight one?

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  • how to convert all to lowercase user names in Active directory

    - by Albert Widjaja
    I am trying to get our subversion configuration management repository to work with active directory. At the moment I am having a problem with some users having mixed case user names in active directory. Would it be possible to change all users with mixed case user names to be all lowercase instead? I'm using Windows Server 2003 Active Directory with 64 bit domain controller running on Windows 2000 mixed functionality.

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  • Is a ext3 Linux filesystem byte order independent

    - by Lothar
    I have a good old HP-C3700 Workstation with PA-RISC CPU here that I would like to use as a subversion server for a very large repository. I just worry what happens if the workstation dies (everybody who knows this computer knows that it is running like an Abrams tank and unlikely to happen in the next decade). I'm using Debian Linux on this system. If the mainboard dies can I just plug the SCSI drive into a PC and read the files from a normal Intel Linux PC? Which software RAID levels would be safe?

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  • Optimal Configuration for five 300 GB 15K SAS Drives

    - by Bob
    I recently acquired an HP Z800 workstation that has five 300 GB 15K SAS Drives. This system will be dedicated to running multiple virtual machines under VMware Workstation (Note: I'm not using ESXi because I do plan to use the system for other purposes.). For the host OS, I plan to install RHEL 5. My number one concern is guest performance. For example, should I create a RAID 10 array for the OS and virtual machine storage with four of the drives and reserve the 5th? Or, is there a solution that will provide better performance?

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  • perfmon reporting higher IOPs than possible?

    - by BlueToast
    We created a monitoring report for IOPs on performance counters using Disk reads/sec and Disk writes/sec on four servers (physical boxes, no virtualization) that have 4x 15k 146GB SAS drives in RAID10 per server, set to check and record data every 1 second, and logged for 24 hours before stopping reports. These are the results we got: Server1 Maximum disk reads/sec: 4249.437 Maximum disk writes/sec: 4178.946 Server2 Maximum disk reads/sec: 2550.140 Maximum disk writes/sec: 5177.821 Server3 Maximum disk reads/sec: 1903.300 Maximum disk writes/sec: 5299.036 Server4 Maximum disk reads/sec: 8453.572 Maximum disk writes/sec: 11584.653 The average disk reads and writes per second were generally low. I.e. for one particular server it was like average 33 writes/sec, but when monitoring in real-time it would often spike up to several hundreds and also sometimes into the thousands. Could someone explain to me why these numbers are significantly higher than theoretical calculations assuming each drive can do 180 IOPs? Additional details (RAID card): HP Smart Array P410i, Total cache size of 1GB, Write cache is disabled, Array accelerator cache ratio is 25% read and 75% write

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  • Modifying the initrd.img to run additional binaries in a PXE booted RHEL 6

    - by Charles Long
    I am trying to add additional automation to our existing RHEL 6 (or Oralce's implementation thereof) PXE install process by running a script in the %pre section of my kickstart config that call hpacucli, HP's raid device configuration binary. My approach has been to modify the PXE served initrd.img. I've unpacked the initrd.img and copied in the required libraries, binaries, and scripts but when the system boots using the modified initrd.img, the modified /lib (and /lib_64) are moved aside to /lib_old and /lib is linked to the /mnt/runtime/lib. How can I change this configuration so that the /lib is not moved (unlikely) or required libraries are available in the runtime /mnt/runtime/lib? To test and confirm this I've been able to get the install process to move to the 6th virtual console, which allows me to see errors, and then open a shell (a useful debugging mechanism). %pre exec /dev/tty6 2 /dev/tty6 chvt 6 /bin/sh

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  • Does SQLIO lie when run from a Hyper-V guest on a VHD?

    - by ScottStonehouse
    SQLIO seems like a useful tool. I thought it would be interesting to try to measure the speed difference between a physical disk and a VHD. So I ran SQLIO on the Hyper-V host on the physical drive. Results seemed reasonable. Then I ran it from the guest to test the vhd (on the same physical disk). I expected it to be a bit slower. But instead it was way faster - like 0ms average latency. So I'm trying to learn something here. It seems like hyper-v is fooling SQLIO somehow but I don't understand it well enough to figure it out. It's a dynamic vhd, no snapshots or anything, and the vhd is the only file on the disk. The physical disk is actually a two SAS drive RAID 1.

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  • Copy XP local profile to new domain user profile

    - by Saif Khan
    I just rolled out a new domain controller. I want to join all the PCS to this new domein (the PCs were never on a domain just a regular workgroup). When I join a PC to the new domain it creates a new profile. How can I migrate (or whats an easy way) the local profile to this new domain profile? Can I keep all settings, desktop layout, outlook 2003 settings etc while doing this?

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  • Using off-the-shelf hardware for brand-name servers; Possible? Good idea?

    - by threecheeseopera
    Is it possible or advisable to use 'regular' not-sanctioned-by-the-server-manufacturer hardware in high end servers? Often these manufacturer-supplied parts have a very high price markup, and I wonder if it's always necessary (understanding that they probably apply more rigorous requirements to this hardware). For example, Dell sells 300GB 15,000rpm serial-attached scsi drives for a certain server family for almost $600 each, while newegg sells a drive with the same specs for almost half the price http://www.newegg.com/Product/Product.aspx?Item=N82E16822116059. Do we really need to pay these high markups, especially for disks that are likely RAID-ed and so guarded against catastrophic failure?

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  • Concerns about a Dedicated (Windows Server 2008) + DDoS

    - by TheKillerDev
    I am have today a dedicated server with these specs: Intel Core i5 750, 2x120GB (ssd + raid), Windows Server 2008 Web, 200Mbps Network, 24 Gb DD3 And I would like to know what are the best thing I can do to prevent a DDoS Attack, since I know this will be a real threat by the importance of the files that will be archived in it. Today I have apache listening port 80 and RDC listening port 3389. But the security is beeing made only by Windows Firewall. So, any thoughts on what would be good to prevent from DDoS attacks?

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  • "Always available offline" option missing on one network drive in Windows 7

    - by Rynardt
    My network setup at home has 2 network storage devices on the network. The one is for media content on a Popcorn Hour A-110 and the other is a D-Link DNS-320 in RAID 1 configuration for business files. When I access these network drives and right click a folder the following context menu appears for the A-110 device, but not for the D-link. I have tested this in both Windows 7 32bit and Windows Vista 64bit. In both instances the "Always available offline" option is only available for the A-110 storage device, and not for the D-link. How do I get this option for the D-link? Any advice or ideas are welcome.

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  • TFS2010 Hangs “Waiting for Build Agent”

    - by Qpirate
    I have asked this question over on SO the link to the question is here but i am hoping this is a better place to ask it. I have 3 VM's each running the TFS Build Host Service 1 has 1 controller and 1 agent 2 have 2 Build Agents each. Most of the time (7\10 builds) it comes back with the following error message TF215097: An error occurred while initializing a build for build definition BUILD_DEFINITION: There was no endpoint listening at http://MACHINE1:9191/Build/v3.0/Services/Controller/14 that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details. and there is no errors when i do get this message. the following is the config file that i have created <configuration> <appSettings> <add key="traceWriter" value="true"/> </appSettings> <system.diagnostics> <switches> <add name="BuildServiceTraceLevel" value="4"/> <add name="API" value="4"/> <add name="Authentication" value="4"/> <add name="Authorization" value="4"/> <add name="Database" value="4"/> <add name="General" value="4"/> <add name="traceLevel" value="4"/> </switches> <trace autoflush="true" indentsize="4"> <listeners> <add name="myListener" type="Microsoft.TeamFoundation.TeamFoundationTextWriterTraceListener,Microsoft.TeamFoundation.Common, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" initializeData="c:\logs\TFSBuildServiceHost.exe.log" /> <remove name="Default" /> </listeners> </trace> </system.diagnostics> </configuration> I do have my own custom activities in my build process but this does not seem to be a problem as sometimes the build actually does go. I have tried refreshing the template as some sites suggest. Has anyone come across a solution for this problem? or can anyone tell me how to catch these errors when they happen?

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  • Parity Initialization after putting in two new disks

    - by lbanz
    All my firmware is up to date on the server and the controllers. Storage crashed over the weekend. I rebooted it and it detected that I put in two new disks last week (I did check that both disk completed the rebuilding process last week). After it booted into the OS I see that it gave me an information message. After 18 hours it is at 54% so it is looking healthy. But I need to replace 5 more disk in the msa. Should I wait for this message to finish before replacing more disks? 785 Background parity initialization is currently queued or in progress on Logical Drive 1 (15.0 TB, RAID 5). If background parity initialization is queued, it will start when I/O is performed on the drive. When background parity initialization completes, the performance of the logical drive will improve.

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  • Ubuntu server hangs on reboot "could not stat resume device file"

    - by matnagel
    Instead of booting into the running system this machine stops and on the terminal I can see a message: could not stat resume device file /dev/sdb5 When I attach a keyboard and press enter the boot continues and the machine comes up like normal. But it's essential that this machine comes up under most circumstancs alone. There never was something like a "resume" on this machine. I tried several times to reboot, but this does not happen on all boots, I can not find a pattern here. There is a software raid running on the box. This is the syslog during boot: http://privatepaste.com/ff0fd0a51c/sdabfjahfgasjkgfu4gfsdzjcgfafasdjfhgasdcjfgauzfgafasgdufzg How can I get rid of this boot failure? We do not need resumes and best would be something that works here and now.

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  • Motherboard rejects identical hard drive, one works the other doesn't

    - by Payson Welch
    I have an interesting situation. I have a Dell XS23-SB server that has four blades in it. The blades use Supermicro X7DWT motherboards, and interface with the sata drives through a backplane. I took two identical drives from a raid 0 enclosure that came from the factory (GDrive), one works on all four servers, the other does not. I verified that they both work by plugging them into a hard drive cradle. This behavior can be repeated with other drives, some drives work and some don't. However when i test them, they ALL work on my PC. What could cause this?

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  • Network drives don't get mapped and desktop redirection stops working when domain user becomes a member of the Local Administrator group on their PC

    - by Kim Jong-Un
    We have a Small Business Server 2003 domain controller with Windows 7 workstations joined to the domain. I noticed recently that, if I make a user a local administrator on his computer, his redirected desktop and mapped network drives do not connect at login (error on login that network drives inaccessible and desktop is blank). However, it is still possible for this user to browse to his home directory where his redirected folders are located- so he still has access to that location. Does anyone have any theories as to what is going on here?

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  • upgrade on graphic card board memory

    - by farzad
    is it possible that the amount of memory available on a graphic card board be updated/altered? I' mot talking about the shared memory that the graphic controller might use from system memory (RAM). my question is: "is it possible to replace/alter the memory available on the graphic card dedicated memory attached on the graphic board, with a similar memory but with higher capacity?"

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  • Is it safe to run an operating system from an USB flash drive?

    - by Georg
    I've got a laptop that has a broken harddisk controller. Replacing the motherboard is quite expensive. I thought about buying a flash drive and installing & running the system from it. However, I'm concerned about some things. Speed: Are they fast enough for swap memory (I've got only 1GB RAM installed.) I'm considering buying 2 or 3 of them and making them into a RAID. What about limited write cycles? How long will it last for a system that has a filesystem with journaling enabled? I'd hate to abandon it. Are there significant differences between internal SSD which are used in modern laptops like MacBooks and USB flash drives? What should I expect in 10 years when the memory wear starts kicking in?

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  • Linux Live CD for old computer

    - by Joel Coehoorn
    I have a pentium II (that's right, pentium II) with a scant 200MB of ram. This was a high-end workstation in it's day. The machine currently runs dos on a raid array, and I need to pull some data from it. I figure my best chance at this is to use a linux live cd to copy the data to one of our active directory network shares (there is a network card in the machine). Unfortunately, my linux skills are abysmal, so I'm not sure where to get started: Where should I look to find a linux cd that will run well on such an old system Since I'm likely gonna need to be command-line only, what do I need to do to configure the network card and mount the network share via the command line? Bonus points: exact syntax needed to copy and convert the entire volume for use in VMware server 2.0, but really just copying all the data should be enough.

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  • In AD how to get groups the workstation is a member of from the workstation itself?

    - by David
    If I'm at the domain controller (in the Active Directory) to find out what groups the "XPSP3-A" workstation is a member of, I do: dsquery computer "CN=XPSP3-A,CN=Computers,DC=pvk,DC=local" -name XPSP3-A | dsget computer -memberof and receive the following: "CN=Sec Group 001,OU=OU1,DC=pvk,DC=local" "CN=Domain Computers,CN=Users,DC=pvk,DC=local" But how to do the same from the "XPSP3-A" workstation?

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