[OmniOS-discuss] 2TB vs 4TB NVMe drives?

[Jeff Stockett]

Yes – definitely let the list know how/if it all works – I’ve been eyeballing the EPYC based TN70A-B8026 which is 2U and 24 hotswap NVMe that are direct attached.  I think the supermicro ones are all going to be via PLX PCI expanders since Intel doesn’t have enough PCI express lanes even in 2P for 24x more less 48x not that it probably matters that much.  FWIW, Phoronix reviewed this Tyan system, and couldn’t get OmniOS (r151122CE I think) to see the nvme drives – but I don’t know how hard he tried nor do I know what kind of drives they sent him for review.

https://www.phoronix.com/scan.php?page=article&item=amd-epyc-bsd&num=1


From: OmniOS-discuss [mailto:omnios-discuss-bounces at lists.omniti.com] On Behalf Of Stephan Budach
Sent: Tuesday, November 14, 2017 6:16 AM
To: omnios-discuss <omnios-discuss at lists.omniti.com>
Subject: [OmniOS-discuss] 2TB vs 4TB NVMe drives?

Hi,

we are planning on purchasing a Supermicro NVMe server with 48 .U2 slots. I intended to initially load it with 24 x 2TB DC P4500, leaving 24 slots empty.

Now… I've been also offered an Intel chassis with only 24 slots and thus the offer also included the 4TB P4500s. Just without thinking very long, I instinctively wayed towards the 2TB drives, mainly for the reason, that should a drive really fail, I'd have of course a longer resilver at hand, usind 4TB NVMe drives.

Which ones would you choose?


Thanks,
Stephan
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