[OmniOS-discuss] Optimal Server Configuration or Disk Controller Recommendations

[Richard Elling]

> On Apr 10, 2016, at 3:05 AM, Guenther Alka <alka at hfg-gmuend.de> wrote:
> 
> Check this prebuild machine as a reference
> http://www.supermicro.com/products/system/2U/2028/SSG-2028R-ACR24L.cfm
> 
> it comes with 3 x Avago 3008 HBAs in IT mode and 2 X 10 GbE Ethernet

FYI, Avago bought Broadcom, then changed their name to Broadcom.
Qlogic and Marvell are seeking acquirers. The number of suppliers of chipsets 
will continue to dwindle.
 — richard

> This allows using Sata disks instead of SAS that you should use with Expander based solutions.
> 
> For database use, I would insist on SSDs like Intel S3610/S3710 or Samsung SM/PM 863 due their reliability with powerloss protection. Decide based on needs of write iops under load.Due the high iops (up to 50k per SSD under constant load compared to 100 iops of a spindle), you do not need mirrors but can use a more cost effective n x Raid-Z2 config with 6 SSD per vdev.Add as much RAM as needed. (ex 128 GB up, the board can hold up to 2TB ECC what is more than your database). Use any Xeons, prefer frequency over number of cores.
> 
> With very fast SSDs in a pool, you can skip the extra Slog for sync write unless you use an NVMe like an Intel P3700 that is much faster than the Sata SSD.
> 
> 
> Gea
> 
> 
> Am 06.04.2016 um 19:23 schrieb Josh Barton:
>> I am hoping to build a server with 15+ drives managed in ZFS that will run a 1TB+ postgres database.
>> 
>> 
>> [NEEDS]
>> 
>> 15-20 drive bays (ideally SFF/2.5")
>> 
>> JBOD disk controller ideal for running ZFS
>> 
>> 
>> In the past I purchased an HP Proliant DL380P Gen 8 but it had a "Smart Array Controller" that prevented us from hot swapping drives. It also seemed to haveless IO channels than might be good when running a box with 16 drives.
>> 
>> 
>> What would you recommend for  either a complete server configuration or at the very least  a disk controller for running this environment?
>> 
>> 
>> Thank you,
>> 
>> 
>> Josh Barton
>> 
>> Systems Admin/Developer
>> 
>> USU Research Foundation
>> _______________________________________________
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>> OmniOS-discuss at lists.omniti.com
>> http://lists.omniti.com/mailman/listinfo/omnios-discuss
> 
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--

Richard.Elling at RichardElling.com
+1-760-896-4422



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