eBay SuperMicro 2U: 12-disk, 2x L5630, $290

Discussion in 'Great Deals' started by watersb, Jun 16, 2016.

  1. watersb

    watersb New Member

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    Older, but good value at $299 shipped. I have purchased from Garland Computers before and had a good experience.

    Supermicro 2U Server X8DTN+ 2x Xeon L5630 2.13ghz QC / 32gb / HW Raid / Add HD

    12 HDD-Bay 2U Server
    LSI MR SAS 8708EM2 Raid Controller

    SAS826A Backplane is partitioned (3x 4 bays). The 8708EM2 will
    only allow 8 of 12 bays to be recognized in Raid 0/1/5/6/10

    X8DTN+ Motherboard
    2x Intel Xeon L5630 2.13ghz 5.86 GT/s 12m Cache Quad Core CPUs
    8x 4gb DDR3 ECC Reg Memory
    LSI MR SAS 8708EM2 Raid Controller
    Add Your Own 3.5″ SATA Hard Drives
    SIMLP-3+ IPMI Remote Access Card
    2x 800w Power Supplies

    No Rails Included
    No Operating System Installed

    30 Day Warranty
     
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  2. nev_neo

    nev_neo Member

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    That backplane - is it SAS2 ?
     
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  3. Rain

    Rain Active Member

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    It is the BPN-SAS826A backplane. The A denotes that there is no expander; simply 3x SFF8087. If you have a SAS2 controller, it will communicate with the drives at SAS2 / SATA III speeds without issue. Pretty sure SAS3 will work as well!

    Do note that, unlike the expander backplanes, you cannot simply use just one SFF8087 cable, you have to use all of them if you populate all the drive bays.
     
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  4. nev_neo

    nev_neo Member

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    Thanks for the info Rain.
    I suppose this would mean needing to used 2 m1015's to enable all 12 bays - correct ?
    Would it be possible to just plug into the motherboard ?
    I'm looking for a 12-bay server for freenas testing. I'd also like to use SSD's, so having SAS2/SATA 3 connectivity would be great.
     
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  5. manxam

    manxam Active Member

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    I'd suggest multiple HBA's such as the M1015 but there's nothing stopping you from using the built in SATA connectors.
    I have the 16 bay version of this and have 14 of the bays controlled via 2x Dell H200 with two ports unplugged and, instead, plugged into SATA on the motherboard. Did this as OmniOS doesn't like booting off of the HBA but has no issue with the onboard SATA.
     
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  6. Rain

    Rain Active Member

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    Either way works, just as @manxam pointed out. Two M1015s would work fine, or just one M1015 and a SFF8087 reverse breakout cable from the backplane to four SAS/SATA ports on the motherboard. A forward SFF8087 breakout cable will not work, despite seemingly being exactly the same.
     
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  7. manxam

    manxam Active Member

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    Because I was curious myself as to WHY one needed "forward" vs "reverse" breakout cables I did a little research:

    Forward Breakout (think ethernet crossover cable) :
    Host/controller:
    Transmit pair on pins 2 & 3
    Receive pair on pins 5 & 6
    Disk:
    Receive pair on pins 2 & 3
    Transmit pair on pins 5 & 6

    Reverse Breakout (1:1):
    1:1 pin mapping between each 4x SATA connector and the 1x SAS connector
     
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  8. mattr

    mattr Member

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    What's the difference between the 826A and 826TQ backplanes?
     
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  9. frogtech

    frogtech Well-Known Member

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    A = sff8087 connectors, 1 per 4 drives, TQ is standard sata data cable connectors, breakout cables are necessary here.
     
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  10. mattr

    mattr Member

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    Ahh thanks... I was going back and forth between the manuals and couldn't figure out the difference. Can't believe I missed that.
     
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