Re: Motherboard recommendation?

[Mohamed Pakkeer <mdfakkeer@xxxxxxxxx>]

Hi Markus,

I think,if you connect more than 16 drives on back plane,X10DRH-CT will detect and show only 16 drives in BIOS. I am not sure about that. If you test this motherboard, please let me know the result.

Msg form supermicro site

LSI 3108 SAS3 (12Gbps) controller; 

• 2GB cache; HW RAID 0, 1, 5, 6, 10, 50, 60
• Supports up to 16 devices as default, more HDD devices support is also available as an option *
  
  For special SKU, please contact your Supermicro Sales.

Thanks 

K.Mohamed Pakkeer

On Thu, Apr 9, 2015 at 5:05 PM, Markus Goldberg <goldberg@xxxxxxxxxxxxxxxxx> wrote:

Hi Mohamed,
thank you for your reply.
I thougt, there is a SAS-Expander on the backplanes of the SC847, so all drives can be run. Am i wrong?

thanks,
  Markus

Am 09.04.2015 um 10:24 schrieb Mohamed Pakkeer:

Hi Markus,

X10DRH-CT can support only 16 drive as default. If you want to connect more drive,there is a special SKU for more drive support from super micro or you need additional SAS controller. We are using 2630 V3( 8 core - 2.4GHz) *2 for 30 drives on SM X10DRI-T. It is working perfectly on replication based cluster. If you are planning to use erasure coding, you have to think about higher spec.

Does any one know about the exact processor requirement of 30 drives node for erasure coding? . I can't find suitable hardware recommendation for erasure coding.

Cheers

K.Mohamed Pakkeer

On Thu, Apr 9, 2015 at 1:30 PM, Markus Goldberg <goldberg@xxxxxxxxxxxxxxxxx> wrote:

Hi,
i have a backup-storage with ceph 0,93
As every backup-system it is only been written and hopefully never read.

The hardware is 3 Supermicro SC847-cases with 30 SATA-HDDS each (2- and 4-TB-WD-disks) = 250TB
I have realized, that the motherboards and CPUs are totally undersized, so i want to install new boards.
I'm thinking of the following:
3 Supermicro X10DRH-CT or X10DRC-T4+ with 128GB memory each.
What do you think about these boards? Will they fit into the SC847?
They have SAS and 10G-Base-T onboard, so no extra controller seems to be necessary.
What Xeon-v3 should i take, how many cores?
Does anyone know if M.2-SSDs are supported in their pci-e-slots?

Thank you very much,
  Markus

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Thanks & Regards   
K.Mohamed Pakkeer
Mobile- 0091-8754410114

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MfG,
  Markus Goldberg

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Markus Goldberg       Universität Hildesheim
                      Rechenzentrum
Tel +49 5121 88392822 Universitätsplatz 1, D-31141 Hildesheim, Germany
Fax +49 5121 88392823 email goldberg@xxxxxxxxxxxxxxxxx
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Thanks & Regards   
K.Mohamed Pakkeer
Mobile- 0091-8754410114

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