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

[Guenther Alka]

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
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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