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• Oracle NoSQL Database Using FusionIO ioDrive2

  - by Charles Lamb

  We ran some benchmarks using FusionIO ioDrive2 SSD drives and Oracle NoSQL Database. FusionIO has published a whitepaper with the results of the benchmarks. "Results of testing showed that using an ioDrive2 for data delivered nearly 30 times more operations per second than a 300GB 10k SAS disk on a 90 percent read and 10 percent write workload and nearly eight times more operations per second on a 50 percent read and 50 percent write workload. Equally impressive, an ioDrive2 reduced latency over 700 percent (seven times) on inserts in a 90 percent read and 10 percent write workload and over 5800 percent (58 times) on reads in a 50 percent read and 50 percent write workload."

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• Ubuntu 12.04 crashing

  - by James Mullinix

  We have a server with 2x32gb sas raid 1 and 4x1tb raid 10 + 2x1tb hot spares. Whenever we try to copy the 1tb and 1.5e6 files to a backup location (even just using tty1 cp command) it fails. We have tried using backintime and dejadup, and resorted to a manual cp to an external usb2 HDD. When that failed, we tried installing an internal HDD on the mobo (not on raid) and another cp, which also fails. The failures lock up the system and we are left with an unfortunate hard reboot situation. After reboot, syslog tends to be empty (only containing newly booted data) and we haven't a clue where to start. It has been 3 weeks since our last successful backup and we are getting nervous... -using 3ware raid controller, 8gb ram and nvidia pciexpress graphics with a gigabyte mobo and xeon 4-core processor.

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• Les langages de programmation exceptés du droit d'auteur, la Cour Européenne les inclut avec les fonctionnalités dans un cadre restrictif

  Les langages de programmation exceptés des droits d'auteur La Cour Européenne les inclut avec les fonctionnalités dans un cadre restrictif du copyright Les fonctionnalités d'un programme informatique et les langages de programmation de manière générale, ne peuvent être protégés par des droits d'auteur, a estimé l'avocat général de la Cour de Justice européenne. Yves Bot a rendu public son avis sur l'affaire qui oppose SAS à World Programming, délimitant la portée de la protection juridique en UE suite à une demande de clarification de la part de la justice britannique. Il assimile les fonctionnalités à des idées dont la protection reviendrait « à offrir la possib...

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• Pros and Cons of Session Replication

  - by techsjs2012

  Do I really need Session Replication? I am working on a number of web projects for a firm. Most of the projects are about one or two pages of input and then doing a save to a mysql database. Very Basic projects. My SA's are pushing to try to get session replication working in JBoss but I don't really see any need for it and all of its overhead. We need load balancing and clustering so if the server does go down we can move the new requests to the backup service but I am not to big in session replication. This is very low volume projects. In my eyes what is the odds of a user being in the project as the server goes down on the one or two pages. I need to convince the SAs that session replication is an un-necessary complication in this instance. I am looking for pros and cons of session replication so that I can better structure my argument.

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• Implementing Custom Software or Using Ready Softwares at Industy at Machine Learning Area? [closed]

  - by kamaci

  I am studying on Machine Learning and its implementations. I have different choices in front of me for my future. Testing algorithms by some tools as like Weka and finding best approach and after that implementing it(maybe with using some libraries at Machine Learning) On the other hand I see that there are softwares as like SPSS, SAS etc. Instead of improving myself like that should I learn that kind of programs. Do I reinventing the wheel or if I improve myself and implement custom solutions to customers then can I be a part of industry?

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• New Seagate SSD and Hard Disks

  - by jchang

  Seagate today announced a near complete overhaul of their enterprise product line. This include second generation SSD now with either SAS and SATA interfaces. The first generation Pulsar SSD only supported SATA interface. The new 2.5in 15K and 10K hard drive models have higher capacity. The 2.5in 7.2K hard drive was upgraded to 1TB last month? The 7.2K 3.5in is now available upto 3TB. All models support 6Gbps. The new second generation Seagate Pulsar SSD comprises two product lines. The Pulsar XT.2...(read more)

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• How many disks is too many in this RAID 5 configuration??

  - by Tom

  HP 2012i SAN, 7 disks in RAID 5 with 1 hot spare, took several days to expand the volume from 5 to 7 300GB SAS drives. Looking for suggestions about when and how I would determine that having 2 volumes in the SAN, each one with RAID 5, would be better?? I can add 3 more drives to the controller someday, the SAN is used for ESX/vSphere VMs. Thank you...

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• light weight alternative to sopui

  - by opensas

  I'm developing a soap web service and I'm using soapui to test it I just need to read the wsdl file and generate a request and see the results... that's all I was wondering if there's a lighter alternative to soapui thanks a lot saludos sas

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• Are there free, low cost, or open source tools for matching name/address data?

  - by luiscolorado

  This question is related to Tools for matching name/address data. There is a number commercial tools provided by SAS, Oracle, Microsoft, etc., that allow to de-duplicate or merging names of individuals or companies coming from multiple sources. However, after reading the answers to the question mentioned before, I wondered why a seemingly interesting problem didn't receive any answers mentioning open source projects that could tackle the problem. Are you aware of any open source projects or algorithms to implement the so called "record linking", "record merging", or "clustering"?

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• Tunnel is up but cannot ping directly connected network

  - by drmanalo

  We configured a site-to-site VPN and here is the topology. I control the network on the left but not the one on the right. All devices in our network has public IPs. Server---ASA5505---Cisco887======Internet=====ASA5510---devices I can see the tunnel is up and can do extended ping using a loopback interface. From the 10.175 and 10.165 networks, they can also ping my loopback address. I can also dial in using a Cisco VPN client, and can connect to the devices on the right. #show crypto session Crypto session current status Interface: Vlan3 Profile: xxx-profile Session status: UP-ACTIVE Peer: 213.121.x.x port 500 IKEv1 SA: local 77.245.x.x/500 remote 213.121.x.x/500 Active IPSEC FLOW: permit ip 10.0.20.0/255.255.255.240 10.175.0.0/255.255.128.0 Active SAs: 0, origin: crypto map IPSEC FLOW: permit ip 10.0.20.0/255.255.255.240 10.165.0.0/255.255.192.0 Active SAs: 2, origin: crypto map #ping 10.165.29.39 source loopback 2 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.165.29.39, timeout is 2 seconds: Packet sent with a source address of 10.0.20.1 !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 16/17/20 ms My problem is the devices on the right cannot reach my server. They could only ping the loopback address and nothing else. I'm pasting some diagnostics related to routing thinking perhaps routing is my issue. I can paste all the running-config on my side of network if needed. #show ip int brief Interface IP-Address OK? Method Status Protocol ATM0 unassigned YES NVRAM administratively down down Ethernet0 unassigned YES NVRAM administratively down down FastEthernet0 unassigned YES unset up up connected to ASA FastEthernet1 unassigned YES unset administratively down down FastEthernet2 unassigned YES unset administratively down down FastEthernet3 unassigned YES unset up up Loopback1 10.0.20.65 YES NVRAM up up Loopback2 10.0.20.1 YES NVRAM up up Virtual-Template1 77.245.x.x YES unset up down Virtual-Template2 77.245.x.x YES unset up down Vlan1 unassigned YES unset down down Vlan3 77.245.x.x YES NVRAM up up connected to the Internet #show run | section ip route ip route 0.0.0.0 0.0.0.0 77.245.x.x ip route 213.121.240.36 255.255.255.255 Vlan3 #show access-list Extended IP access list 102 10 permit ip 10.0.20.0 0.0.0.15 10.175.0.0 0.0.127.255 (3332 matches) 20 permit ip 10.0.20.0 0.0.0.15 10.165.0.0 0.0.63.255 (3498 matches) #show vlan-switch VLAN Name Status Ports ---- -------------------------------- --------- ------------------------------- 1 default active 3 VLAN0003 active Fa0, Fa1, Fa2, Fa3 1002 fddi-default act/unsup 1003 token-ring-default act/unsup 1004 fddinet-default act/unsup 1005 trnet-default act/unsup #show ip route Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2 E1 - OSPF external type 1, E2 - OSPF external type 2 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2 ia - IS-IS inter area, * - candidate default, U - per-user static route o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP + - replicated route, % - next hop override Gateway of last resort is 77.245.x.x to network 0.0.0.0 S* 0.0.0.0/0 [1/0] via 77.245.x.x 10.0.0.0/8 is variably subnetted, 5 subnets, 3 masks C 10.0.20.0/28 is directly connected, Loopback2 L 10.0.20.1/32 is directly connected, Loopback2 C 10.0.20.64/28 is directly connected, Loopback1 L 10.0.20.65/32 is directly connected, Loopback1 S 10.165.0.0/18 [1/0] via 213.121.x.x 77.0.0.0/8 is variably subnetted, 3 subnets, 3 masks S 77.0.0.0/8 [1/0] via 77.245.x.x C 77.245.x.x/29 is directly connected, Vlan3 L 77.245.x.x/32 is directly connected, Vlan3 213.121.x.0/32 is subnetted, 1 subnets S 213.121.x.x is directly connected, Vlan3 I read some of the posts here which lead to NATing issue but I'not sure of my next step. Should I translate my public address to private and route it to the loopback address? (only guessing) CISCO VPN site to site Site-to-Site VPN between two ASA 5505s only working in one direction Hope someone could help. Thanks in advance!

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• Sun Storage 2500-M2 Array and Sun Fire X4470 M2 Server

  - by nospam(at)example.com (Joerg Moellenkamp)

  There is some new hardware in the Oracle portfolio. The first one is the Sun Fire X4470 M2 Server. There was a lot of talk about the system before because of benchmark results, but now it's finally announced. Two or four Intel Xeon E7-4800. Up to 1 TB as the system provides 64 DIMM slots with 16 GB DDR DIMMs. The memory is placed on those riser cards right behind the fans of this chassis. Up to 6 internal drives. In a 3 RU package. Another announcement was the Sun Storage 2500 M2 announced yesterday: From 5 to 48 drives (the later number with three expansion trays) for up to 28.8 TB of storage. The array is SAS based internally. You can put 300GB and 600 GB in it. The 2540-M2 provides 4 (8 optional) FC ports with up to 8 GB/sec. The 2530-M2 has 4 SAS2 ports with up to 6 GBit/s. It has 2 integrated controllers providing 2 GB cache protected by a power backup for 72 hours. The controller enables the arrays to deliver 0, 1, 10, 3, 5, 6, (P+Q) RAID levels.

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• How to check CPU temperature on a HP P2000?

  - by Pavel

  I have a HP StorageWorks MSA Storage P2000 G3 SAS. show sensor-status gives something like # show sensor-status Sensor Name Value Status ---------------------------------------------------- On-Board Temperature 1-Ctlr A 53 C OK On-Board Temperature 1-Ctlr B 52 C OK On-Board Temperature 2-Ctlr A 61 C OK On-Board Temperature 2-Ctlr B 63 C OK On-Board Temperature 3-Ctlr A 53 C OK On-Board Temperature 3-Ctlr B 53 C OK Disk Controller Temp-Ctlr A 34 C OK Disk Controller Temp-Ctlr B 32 C OK Memory Controller Temp-Ctlr A 66 C OK Memory Controller Temp-Ctlr B 67 C OK [...] Overall Unit Status OK OK Temperature Loc: upper-IOM A 40 C OK Temperature Loc: lower-IOM B 38 C OK Temperature Loc: left-PSU 36 C OK Temperature Loc: right-PSU 40 C OK [...] is one of the values the CPU/FPGA temperature? Or, if not, how do I get it? Thanks!

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• Windows 7 random black screen when idle

  - by Omar

  Occasionally, when I'm away from my computer for about 5 minutes, the computer screen will go black and all USB devices (keyboard/mouse) will lose power. Attempting to move the mouse or pressing keys does not 'wake up' the computer. This only started happening a few days ago but I'm not sure what changes I did could have caused this and I uninstalled programs (one by one) I installed before it started happening, but still having the same issue. The one thing I noticed different about my computer since it started happening is i've been getting random survey popups from www.insightexpress.com. I ran Microsoft Security Essentials scan, it picked up some Java related malware, I removed it but still the same issue. I'm running MBAM right now and will run SAS after.

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• What would be the optimal disk config for SQL Server 2008 R2?

  - by Kev

  We have a new Dell R710 server that came with the following storage configuration: 8 x 146GB SAS 10k 6Gbps disks 1 x Perc H700 Integrated Controller (2 x 4 disks - 2 ports each supporting 4 disks) What would be the optimal configuration if we were just after performance? What would be the optimal configuration if we were after performance but wanted data resilience. As per 2 above but with a hot standby disk? We plan to run Windows 2008 R2 and SQL Server 2008 R2. Maximising storage capacity isn't a prime concern.

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• what is acceptable datastore latency on VMware ESXi host?

  - by BeowulfNode42

  Looking at our performance figures on our existing VMware ESXi 4.1 host at the Datastore/Real-time performance data Write Latency Avg 14 ms Max 41 ms Read Latency Avg 4.5 ms Max 12 ms People don't seem to be complaining too much about it being slow with those numbers. But how much higher could they get before people found it to be a problem? We are reviewing our head office systems due to running low on storage space, and are tossing up between buying a 2nd VM host with DAS or buying some sort of NAS for SMB file shares in the near term and maybe running VMs from it in the longer term. Currently we have just under 40 staff at head office with 9 smaller branches spread across the country. Head office is runnning in an MS RDS session based environment with linux ERP and mail systems. In total 22 VMs on a single host with DAS made from a RAID 10 made of 6x 15k SAS disks.

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• Replacement Alternative for Dell FY606 in a Poweredge T105

  - by Mike C

  I have recently upgraded my Poweredge T105 server to use a SAS 6/ir RAID controller. Unfortunately, I did not realize at the time that adding the card would cause the BIOS to complain about a missing hard drive fan. This warning requires that a user press F1 to continue, which is disastrous in a server environment. I have searched all over found that the specific part I need is a Dell FY606 fan. However, I have yet to find a suitable retailer that covers this part. I have contacted Dell and they do not have this part in stock. Are there any alternative models of a fan that I could use in place of an FY606? Seems like a pretty straightforward part, just a fan that connects to a 4-pin power connector on the motherboard.

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• What Raid should I use for Website Static Files / Content

  - by Simon

  I'm building a Web server (IIS7) and would like to know the best practice for storing static content and the uploaded files of website's users (predominantly pictures, but also other documents like pdf's). I will keep the operating System on a Raid 1 array. Where should I be keeping the actual website's pages & files, it's own static content, and that of it's users? Should I be placing this content on a seperate raid array, and if so which type? I was considering using SLC SSD's (Such as the Intel's X25-e) but the following issues came to light. Will the SLC SSD's give any improvement over a 2.5" 15k SAS Drive for this type of content? If I did use SSD's, I'm under the belief I would still need to use Raid for redundancy, yet I've heard Intel X25-e's don't support TRIM. Does this scrap them as a legitimate option?

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• On Server Disk Storage VS SAN Storage

  - by Justin

  Hello, I am looking at buying three servers, and trying to figure out which storage solution makes the most sense in terms of performance and cost. Total budget is around: $10,000. OPTION 1: Dell servers with RAID 10 (4 Drives) each 7200RPM SAS 500GB, for a total capacity of 1TB. Each server is approx: $3000. Total storage then across all three servers is 3TB. OPTION 2: Same Dell servers with a cheap single drive no RAID for $2000 and go with a centralized SAN solution. The biggest problem is that I haven't been able to even find a SAN solution that is a reasonable price. Dell entry level storage servers are like $15,000. I am thinking just iSCSI, not fiber (too expensive). What do you guys recommend?

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• MySQL installation question.

  - by srtriage

  I am far from a DBA and have a question. Recently I installed MySQL. On my machine C:\ is a 50GB partition of two mirrored 10k SAS drives. The remaining space on those drives is allocated to D:. I also have a SSD mounted as E:. When I installed MySQL, I installed it to E:\ assuming that that is where the database information would be held since I had installed it there. I am now seeing C:\ProgramData\MySQL\MySQL Server 5.1\data\peq, peq being the name of my main database. Is my database being stored in C:\ and if so, how do I fix it to store the DB on the SSD?

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• Intel 520 SSD drives not working with lsi controller on VMware esxi 5

  - by Michael

  We have a problem with our LSI 9266 controller. LSI have vmware drivers which normally show the health status of connected drives, raid controller, battery etc from within the vSphere Client. This driver also allows connectivity from the LSI MSM utility from a windows workstation. The problem is as soon as I connect my intel 520 SSD drives the health status in the vsphere client disappears, also we lose connectivity via the LSI MSM utlity. Any other drives we test are fine, 1TB SAS drives, other SSD drives etc are all OK. The Intel drives are on the compatability list and are supported by LSI but dont work with the VMware driver. If I install a windows OS on the physical server we have no problems. I have logged a ticket with LSI but they havent been very helpful. I am trying to find other people that may have had the same issue and maybe even a fix

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• Home ZFS based NAS...What processor/chipset to use?

  - by MrBlargityBlarg

  So, I'm building a home/personal NAS. My plan is to expose both SMB fileshares for sharing files/media between hosts, but also to carve an iSCSI target LUN out of it for use by VMWare as a datastore. I want to use ZFS (software RAID) so that means I'll either be using FreeNAS, Solaris Express, or OpenIndiana. My question is basically: How much horsepower do I need? Obviously I/O is going to be my bottleneck but I want to be sure that I am not limiting my I/O because of a slow processor or chipset. So far the hardware plan is to use an Intel i3 and motherboard with one of the H87, Q87, or Z87 chipsets, a SAS controller (JBOD, no RAID) and if budget allows, I'm also hoping to get an SSD for the ZFS L2ARC and ZIL. Does anyone think I could get away with an Intel Atom or cheaper/less-capable processor/chipset than the i3 and [HQZ]87 listed above?

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• Slow NFS transfer performance of small files

  - by Arie K

  I'm using Openfiler 2.3 on an HP ML370 G5, Smart Array P400, SAS disks combined using RAID 1+0. I set up an NFS share from ext3 partition using Openfiler's web based configuration, and I succeeded to mount the share from another host. Both host are connected using dedicated gigabit link. Simple benchmark using dd: $ dd if=/dev/zero of=outfile bs=1000 count=2000000 2000000+0 records in 2000000+0 records out 2000000000 bytes (2.0 GB) copied, 34.4737 s, 58.0 MB/s I see it can achieve moderate transfer speed (58.0 MB/s). But if I copy a directory containing many small files (.php and .jpg, around 1-4 kB per file) of total size ~300 MB, the cp process ends in about 10 minutes. Is NFS not suitable for small file transfer like above case? Or is there some parameters that must be adjusted?

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• AutoCAD 11 and network file shares

  - by gravyface

  Small network of perhaps half a dozen engineers, currently working on local copies of AutoCAD project files, which are then copied back up to file server (2008 Standard, 1-2 year old Dell server hardware, RAID 5 SAS disks (10k? not positive)) at end of day. To me, this sounds horribly inefficient and error-prone, however, I've been told that "AutoCAD and network files = bad idea" and this is gospel. The network is currently 10/100 (perhaps this is the reason for the "gospel") but all the workstations are within 2 years old and have GbE NICs so an upgrade of the core switch is long overdue. However, I know certain applications don't like network access, at all, and any sign of latency or disruption brings the whole thing crashing down. Anyone care to chime in?

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• Linux: How to delay hddtemp service start at boot until all hdd are visible?

  - by Atis

  I live in a hot and humid environment, therefore I monitor the hdd temperature using hddtemp and gkrellm. There is an LSI9211 8i sata/sas controller in my computer. I have drives connected to both my motherboard and the LSI. hddtemp monitors only the drives directly connected to my motherboard after booting the system, therefore gkrellm displays the temperature of those drvies only. Logging in and restarting hddtemp before starting gkrellm fixes my issue, i.e. drives connected to the LSI controller are also visible. It seems that the drives connected to the LSI controller become visible only after hddtemp is started in the boot sequence. I think delaying it would help. How can I delay the starting of hddtemp till all drives are visible? I prefer a way to check if drives are visible to the delay of a specific amount of seconds.

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• Disabling RAID feature on HP Smart Array P400

  - by Arie K

  I'm planning to use ZFS on my system (HP ML370 G5, Smart Array P400, 8 SAS disk). I want ZFS to manage all disks individually, so it can utilize better scheduling (i.e. I want to use software RAID feature in ZFS). The problem is, I can't find a way to disable RAID feature on the RAID controller. Right now, the controller aggregates all of the disks into one big RAID-5 volume. So ZFS can't see individual disk. Is there any way to acomplish this setup?

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