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• Expected IOPS for log writing on PS6000X SAN?

  - by dssz

  Customer is experiencing poor Sybase ASE 15 performance on a PS6000X SAN with 16 X 450GB 10K in RAID-50. The server is a Dell R710 running 2003 server R2 64bit in ESX 4.0.0,256968 I've used sqlio to benchmark the sequential write performance of 4KB blocks on the drive. sqlio -kW -t1 -s600 -dE -o1 -fsequential -b4 -BH -LS sqliotestfile.dat Result is 1900 IOPS. However, when Sybase is running a sustained workload of small inserts SAN HQ shows a consistent 590 IOPS (and 100% 4K write activity). It also shows that the write latency increases to 1.2ms from <1ms. Monitoring and tests in Sybase demonstrate the performance problem is IO related and in particular there is a lot of wait time writing to the log. The SAN indicates that write caching is enabled. What IOPS should the SAN be capable of for 4k sequential write activity? Also, with write caching enabled, shouldn't the controller be batching up the 4K writes into something more efficient? Also, any tips on Sybase on ESX would be appreciated.

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• Look for Oracle at the 2010 ISM San Diego Conference

  - by [email protected]

  Oracle is sponsoring and exhibiting at ISM's 95th Annual International Supply Management Conference and Educational Exhibit on April 25th through 28th.   Be sure to catch our presentation with Hackett that explores how procurement can use payables to boost an organization's balance and income statements. Pierre Mitchell from Hackett will be sharing groundbreaking new research that identifies explicit links between a strategic approach to supplier payments and world-class performance.   If your organization can benefit from increased margin, improved working capital, greater efficiency, and reduced risk, then you can't afford to miss this session. We'll be presenting on Monday at 5:00pm in Exhibit  Hall D.       Some of Oracle's top talent will be available to answer your questions in booth number 527. It is a great opportunity to learn about Oracle's innovations for supplier management, spend classification, invoice automation, and On Demand delivery of procurement applications.  

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• San Diego Web Development - Offers a Reliable Service

  Looking for a web developer is easy since there are a lot of companies that offer this kind of service. The only difficult part in looking for a web developer is seeking someone that will provide you with satisfaction on their service.

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• HP Upgrades SAN Storage, OEMs QLogic Fibre Channel Switches

  HP unveils new offerings for iSCSI and Fibre Channel storage networking environments.

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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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• San Antonio Computer Repair Software Application Failure Checklist

  Software Application Failure Checklist -------------------------------------------------------------------------------- If one of the software applications that you use on a regular basis suddenly... [Author: Bryan Keller - Computers and Internet - April 06, 2010]

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• Example sites which use UCC certificates

  - by Brian

  Can anyone point me to a few sites that make use of a UCC (SAN) certificates? I tried to search for this but found a lot of information about UCC certficates without any examples. As a sanity check before buying/configuring a UCC certificate, I wish to do some basic testing to determine exactly how the certificate will look in different browsers. Yes, I realize I could just use makecert instead. I would rather just look at them in the wild.

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• OpenWorld 2011, San Francisco 'Call-for-Papers'

  - by stephen.slade(at)oracle.com

  Oracle supply chain customers and partners are encouraged to submit proposals to present at this year's Oracle OpenWorld on Oct 2-6 at Moscone, SanFrancisco. Oracle welcomes these proposals for supply chain sessions on a wide variety of 'Value Chain Transformation' topics, with content targeted at various levels of attendees from beginner to expert user. Last year ~40,000 attendees from around the world representing thousands of users and organizations in every vertical industry participated.Details and submission guidelines are available on the Oracle OpenWorld Call for Papers web site.

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• JavaOne San Francisco 2013 Content Catalog Live!

  - by Yolande Poirier

  There will be over 500 technical sessions, BOFs, tutorials, and hands-on labs offered. Note that "Securing Java" is a new track this year. The tracks are:  Client and Embedded Development with JavaFX Core Java Platform Edge Computing with Java in Embedded, Smart Card, and IoT Applications Emerging Languages on the Java Virtual Machine Securing Java Java Development Tools and Techniques Java EE Web Profile and Platform Technologies Java Web Services and the Cloud In the Content Catalog you can search on tracks, session types, session categories, keywords, and tags. Or, you can search for your favorite speakers to see what they’re presenting this year. And, directly from the catalog, you can share sessions you’re interested in with friends and colleagues through a broad array of social media channels. Start checking out JavaOne content now to plan your week at the conference. Then, you’ll be ready to sign up for all of your sessions when the scheduling tool goes live.

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• MD3200i Slow Performance and Queue Depth

  - by Caleb_S

  Read performance on our SAN is slow under certain workloads. When we compare this to some local storage, we find the local storage performing 2x as fast. The SAN performs well with a high Queue Depth, and poorly with a low queue depth. However, the local storage performs well with a low Queue Depth. I'd like to know the reason for this occurring and find out what the specific limiting factor is in this situation. MD3200i iSCSI SAN ($15,000) 6 x 600GB 15k SAS RAID5 6 x 2TB 7.2k NLS RAID5 XCOPY /j Benchmark: (Slow) 15k Array - 71MB/s (Queue Depth 1) 7.2k Array- 71MB/s (Queue Depth 1) Robycopy /MT:32 Benchmark: (Fast) 15k Array - 171MB/s (Queue Depth ~12) 7.2k Array- 128MB/s (Queue Depth ~12) , , Read Performance on a Local controller is fast under the workload the SAN is slow at. , HighPoint 2230 RAID Controller ($600) 4 x 1TB 7.2k SATA RAID5 XCOPY /j Benchmark: 7.2k Array - 145MB/s (Queue Depth 1) (appears to max out the SATA bus)

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• iSCSI using uplink ports on switch

  - by Gregory Thomson

  Do the uplink ports on switches typically work okay as iSCSI ports? We're adding a 10gb iSCSI SAN, and want to get a combo switch (48x1gb & 4x10gb SFP+ uplink ports) and use the 10gb for the iSCSI SAN, while the 1gb are for a 1gb iSCSI SAN. We were told the uplinks don't provide buffering needed for iSCSI. Is this specific to the switches used, and do some provide that needed buffering and some not on the uplink ports?

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• Oracle PartnerNetwork Exchange @ OPENWORLD 2012 - San Francisco

  - by Cinzia Mascanzoni

  Updates for you and to share with your partners: • OPN Exchange will kick off on Sunday, September 30th with Oracle Partner Keynote at 1pm PT and General Sessions at 3:30pm PT. • OPN Exchange AfterDark Reception featuring Macy Gray will be held at Metreon’s City View Terrace on Sunday, September 30th @ 7:30pm PT • Pre-enroll to attend 40+ OPN Exchange Sessions and Test Fest exams via Schedule Builder.

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• SQL in the City - San Francisco 2012

  The city by the bay welcomes Steve Jones, Grant Fritchey and more for a day of debate, discussion and learning about SQL Server. It's free. Just register and join us. Are you sure you can restore your backups? Run full restore + DBCC CHECKDB quickly and easily with SQL Backup Pro's new automated verification. Check for corruption and prepare for when disaster strikes. Try it now.

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• Hello Again, San Francisco

  - by Geertjan

  From the moment I got to the airport in Amsterdam, I've been bumping into JavaOne pilgrims today. Finally got to my hotel, after a pretty good flight (and KLM provides great meals, which helps a lot), and a rather long wait at customs (serves me right for getting seat 66C in a plane with 68 rows). And, best of all, on Twitter I've been seeing a few remarks around the Duke's Choice Awards for this year. The references all point to the September - October issue of the Java Magazine, where page 24 shows the following: So, from page 24 onwards, you can read all about the above applications. What's especially cool is that three of the above are applications created on top of the NetBeans Platform! That's AgroSense (farm management software), MICE (NATO system for defense and battle-space operations), and Level One Registration Tool (UN Refugee Agency sofware for managing refugees). Congratulations to all the winners, looking forward to learning more about them all during the coming days here at the conference.

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• HP server delayed boot

  - by jjrab

  I'm currently using HP Proliant DL120 G5 servers running VMWare ESXi 4 to run server VM's. They are connecting to an iSCSI SAN for the shared storage. I'd like to implement a delayed boot of these hosts servers so that they don't boot up and try to connect to the SAN before the SAN is ready for connections after a power failure. Does anyone know of a good way to do this?

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• Diagnosing SAN connectivity issues (RHEL5)

  - by Matthew

  We are currently utilizing GFS2 to share a SAN LUN between 3 servers. However due to a feature problem with vendor software we are using, we currently have the volume unmounted on two of the boxes, and are instead exporting the GFS2 filesystem via NFS from the first one (the software requires some weird locking mechanics that GFS2 doesn't support). As of this morning, NFS was no longer able to read/write to the volume from any of the servers, including the NFS server. I then tried checking the normal mount (the directory that is exported on the NFS server) and I received a weird input/output error just trying to CD into it. When I tried running multipath, I got a DM error, however multipath -l worked just fine. I tried unmounting the GFS2 volume, and the CLI hung. I ran init 0 which killed most services, but then the shutdown appeared to have been hung. I logged in via out of band access (hp ILO) and saw that the shutdown was hung trying to unmount GFS2 volumes. My main priority was getting the box back online so after about 5 minutes of waiting I did a hard reset. I am now trying to figure out what went wrong. What are the correct logs to investigate? I've never run into SAN issues like this before. The SAN is connected via 2 fibre connections. Any help would really be appreciated. Everything appears to be up and functional now.

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• Can I use a SCSI Ultra 320 drive instead of SAS

  - by Stulli

  Hello, I have a bricked SCSI hard drive that I need to replace. It has a SAS interface Model ST373455SS Can I replace it with this one Model ST373455LC that has an Ultra320 interface?

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• Unable to boot with Windows 2008 DVD / USB Key

  - by r0ca

  Hi everyone, I am trying to install Windows 2008 server on a HP Proliant DL180 G5. There is no built-in DVD reader so I need to use my LaCie USB one. When I put the CD in and boot from the USB DVD on the server, I get the error message: Boot Failed! Please insert boot media in selected boot device. So I tried with another Windows bootable CD and still no luck. What I've done then, I copied the installation DVD on my 16go USB key. Again, impossible to boot from the USB Key. I have 2 147go SAS 15k HDD on my server. They are not showing in the Bios. I was wondering if this is a reason why nothing will boot on it. I am trying to find a way to deploy Windows 2008 server on my HP server as soon as possible. If you guys have ideas, feel free to let me know :) Best regards, David. System Information: HP Proliant DL180 G5 Quad-Core 2.5 4GO Ram 2x 147GO SAS 15k P.S. This is my first installation ever on SAS/SCSI HDD. Thanks a bunch! Edit: Well, my bad! I purchased a new USB DVD and now I can install Windows 2008 server. Thanks a bunch for your help!

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• Migrating RAID6 array from HP SmartArray P600 to LSI MegaRAID SAS 8888ELP

  - by MLu

  My customer has an external RAID6 array (8x 1TB in HP MSA60 enclosure) attached to HP SmartArray P600 controller. They have now decided to replace the server and the new one comes with LSI MegaRAID SAS 8888ELP. The HW supplier insists the migration is as simple as pulling the eSATA cable from P600 and inserting it into LSI but I'm not convinced. Unfortunately I have nowhere to test, and will have to do the exercise on the production array :( So the question in brief - is it possible to import the HP SmartArray P600-created RAID6 array to LSI MegaRAID 8888ELP?

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• ZFS SAS/SATA controller recommendations

  - by ewwhite

  I've been working with OpenSolaris and ZFS for 6 months, primarily on a Sun Fire x4540 and standard Dell and HP hardware. One downside to standard Perc and HP Smart Array controllers is that they do not have a true "passthrough" JBOD mode to present individual disks to ZFS. One can configure multiple RAID 0 arrays and get them working in ZFS, but it impacts hotswap capabilities (thus requiring a reboot upon disk failure/replacement). I'm curious as to what SAS/SATA controllers are recommended for home-brewed ZFS storage solutions. In addition, what effect does battery-backed write cache (BBWC) have in ZFS storage?

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• LSI SAS 1064E drivers for Server 2012

  - by rendentucson

  I have a need to place Windows Server 2012 onto a Sunfire X4100 blade server that contains a LSI SAS 1064e RAID controller (2006). The LSI site only has drivers up to server 2008 R2. I did attempt to install server 2012 hoping it might contain generic MS Drivers (I was dreaming, I know). That failed. I attempted to load external LSI drivers for server 2008. That failed as well. Am I out of luck, or did I miss something? Thanks in advance.

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• RAID across SAS controller ports

  - by BlueGene

  Hi, I'm managing a HP DL360 G5 machine. It has a SAS controller with two ports. Port 1 is attached to 4 drive bays and Port 2 has 2 bays. The machine currently has 3 drives connected to Port 1 with RAID 5 configuration. I'm trying to max out the bays by adding 1 disk in port 1 and 2 in port 2. Can I group those three disks(1 disk-port, 2 disks-port 2) in a RAID 5 configuration?

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• ZFS SAS/SATA controller recommendations

  - by ewwhite

  I've been working with OpenSolaris and ZFS for 6 months, primarily on a Sun Fire x4540 and standard Dell and HP hardware. One downside to standard Perc and HP Smart Array controllers is that they do not have a true "passthrough" JBOD mode to present individual disks to ZFS. One can configure multiple RAID 0 arrays and get them working in ZFS, but it impacts hotswap capabilities (thus requiring a reboot upon disk failure/replacement). I'm curious as to what SAS/SATA controllers are recommended for home-brewed ZFS JBODs. In addition, how does battery-backed write cache (BBWC) play into the solution?

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• Will Software RAID And iSCSI Work For A SAN

  - by Justin

  I am looking for a SAN solution, but can't afford even entry level solutions. Basically, the SAN is for development and a proof of concept product. The performance doesn't have to be amazing, but needs to be functional. My buddy says we should just setup sotware RAID and software iSCSI in Linux. Essentially I have a spare server with dual Xeon processors, 4GB of memory, and (2) 500GB 7200RPM drives. It's a bit old but working. I am sure there is reason people don't do software RAID and iSCSI, but will performance be usable? Thinking of configuring the drives in RAID 0 (for performance).

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• Preventing h/w RAID cards from dropping slow JBOD disks

  - by Kevin

  I'm considering buying a used SAS h/w RAID card for externally attaching HDDs to an HP ProLiant I'm setting up. However, I only require RAID functionality on some of the drives. Theoretically it should be simple to JBOD the other drives, but some of them are inexpensive SATA disks and probably cannot have TLER disabled. I'd like to know, prior to actually ordering a RAID card, whether typically RAID cards would still enforce dropping of disks that do not respond within a few seconds, even if the disk is in a JBOD, and whether there is any way to disable this. Ideally it would be nice to be able to select certain SAS ports that will be pass-through, bypassing the RAID engine entirely and just acting as an HBA for those ports. I know I could buy a separate SAS HBA but that seems like a waste of $ and is also impractical as it's a 1U server so space is extremely limited. My question then is whether the functionality I'm looking for (pass-through on certain ports or at least JBOD drives not getting themselves dropped due to slow response) is typical of proper h/w RAID cards such as PERC 5/E etc. I've browsed through the latter's manual but unfortunately, as with most user manuals, it states the obvious and doesn't state the unobvious. Thanks for any info, Kevin

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