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Thread: 1U San

  1. #1
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    1U San

    Does anyone have some good experience with any 1U sans? Something with 4 sata drives, 2 gig links etc.

  2. #2
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    No offence, but that's not a SAN, that's a server, a NAS at a push. 4 x SATA drives, even in RAID-10 isn't going to give any sort of acceptable performance for multiple machines accessing it.
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  3. #3
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    I have to agree with KDA here, you need to be looking at a minimum of 8 drives and a proper software layer on top of that.

    If you want to build a 4 drive san then you could just use any 4 bay server and an opensource SAN distro but that's not really going to get you far.

  4. #4
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    Quote Originally Posted by KDAWebServices View Post
    No offence, but that's not a SAN, that's a server, a NAS at a push. 4 x SATA drives, even in RAID-10 isn't going to give any sort of acceptable performance for multiple machines accessing it.
    Agree
    Minimal 12/16/24 drives (SAS or SATA3) with fiber connections...

  5. #5
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    does this 1U server support 2.5" SAS or SSD? Its rare to see a 1U case with (4) 3.5" slots.
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  6. #6
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    Quote Originally Posted by OffshoreRacks View Post
    does this 1U server support 2.5" SAS or SSD? Its rare to see a 1U case with (4) 3.5" slots.
    Not rare, but it is pretty common. What I find even more rare is a 1U case supporting 8 x 2.5" drives which I have been looking for months.

  7. #7
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    4 x 3.5" used to be rare a few years ago, these days it's pretty much standard.
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  8. #8
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    Quote Originally Posted by YUPAPA View Post
    Not rare, but it is pretty common. What I find even more rare is a 1U case supporting 8 x 2.5" drives which I have been looking for months.
    Are you looking for something specific?

    http://www.pcconnectionexpress.com/1...3tq-700cb.html

  9. #9
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    1U san: http://www.dell.com/us/business/p/poweredge-c1100/pd

    Just use the 10 disk version.
    'Ripcord'ing is the only way!

  10. #10
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    Quote Originally Posted by asturmas View Post
    Agree
    Minimal 12/16/24 drives (SAS or SATA3) with fiber connections...
    I have to disagree on the fiber part.. A lot of people are running iSCSI on existing ethernet infrastructure. Since you can get 10GE nics pretty decently priced these days.

    If you can push it to 2U you can get a IBM 3500 series san with fiber/iscsi/infiniband/sas connectors.

    http://www-03.ibm.com/systems/storage/disk/ds3500/

  11. #11
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    Quote Originally Posted by phpcoder View Post
    Are you looking for something specific?

    http://www.pcconnectionexpress.com/1...3tq-700cb.html
    Yes, something like that

  12. #12
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    Quote Originally Posted by YUPAPA View Post
    What I find even more rare is a 1U case supporting 8 x 2.5" drives which I have been looking for months.
    Supermicro has plenty of models that take 8, and one that supports 10:

    http://www.supermicro.com/products/c...16TQ-R700C.cfm
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  13. #13
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    What is the cost of a SAN device of 16 TB to 64 TB?
    Prashant T.

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  14. #14
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    How long is a piece of string? SATA/SAS/SSD, 7k2/10k/15k, FC/FCoE/iSCSI (GE/10GE/infinniband Features such as replication, snapshots.

  15. #15
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    Quote Originally Posted by kspare View Post
    Does anyone have some good experience with any 1U sans? Something with 4 sata drives, 2 gig links etc.
    QNAP works fairly decent for iSCSI SAN, but they are more along the lines of a SMB appliance.

    http://www.qnap.com/Products.asp

  16. #16
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    Thanks for the links to the 1U SAN. I didnt think there were any good 1U SAN's. For the price per GB I think its best to go for 2U with 3.5" disks.

  17. #17
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    You might have good luck with CORAID. Generally speaking, you should avoid deploying iSCSI over ethernet infrastructure and use a layer-2 protocol like AoE. Otherwise the latency is going to be a bit rough and IP protocol adds additional complexity, which is unnecessary if you're just trying to export some block devices.

  18. #18
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    Micro-SANs using SSDs and plenty of RAM can be affective for small deployment, as long as you are realistic about the performance.

    Try 4 Gen3 SSDs, a good CPU and as much RAM as you can get (16GiB) + and you should easily saturate a couple of GbE's

    Another approach that works well is using a ZFS OS (OpenIndiana or FreeBSD) use a SSD as L2ARC & SLOG and 3 spinning pieces of rust (HDDs). Export via iSCSI

    However move to 2U well built SAN and infiniiband or 10GbE are easily the bottleneck.
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  19. #19
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    I do respect that some might not thing of a qnap as a san and more of a nas, so to be fair,it's more of a smb san. We're not a large hosting company so I don't need a large 20 disk system, I did pick up a qnap 459u-rp with 4 2tb WD Black drives, and the performance is impressive. I'm able to easily saturate a 1gb link, just working on the bonded interfaces. What impressed me even more is that fact that NFS was actually faster than iscsi for vmware.

    For anyone looking for a small solution like this, I can tell you this until works well for a very small budget.

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