topic Re: Query: Persistent Memory Redundancy? in Servers - General

Persistent Memory Redundancy?

Mike Texter — Thu, 20 Apr 2023 13:59:25 GMT

Hi, This is the first time I've really dug into PMMs (Intel Optane), so bear with me if I'm a little slow on the uptake. It looks like you can configure these in either cache- or disk-mode, depending on your system. We have a customer who's interested in adding disk-mode PMMs to their environment but has concerns about redundancy / what happens in the event of a PMM failure. It seems as though there's no way to set up something akin to a hardware RAID for PMMs, but is there any other way to get redundancy at the hardware level? The only options I've found are software-based, which doesn't seem great. System in question is a DL360 Gen10.

Quickspecs mentions nothing: https://www.hpe.com/psnow/doc/a00008159enus.pdf

Other HPE memory guides mention nothing: https://www.hpe.com/psnow/doc/a00017079enw

configuration tutorials on youtube mention nothing. https://www.youtube.com/watch?v=AqqymYPAfWk

What would be a use case for PMMs in disk mode? Am I missing something?

Cheers,

Query: Persistent Memory Redundancy?

support_s — Thu, 20 Apr 2023 15:00:40 GMT

System recommended content:

1. HPE Telco Blueprint Planning Guide | Recommended specifications for Compute

2. HPE Telco Blueprint Planning Guide | Recommended specifications for worker node (Intel-based)

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Re: Query: Persistent Memory Redundancy?

Mike Texter — Tue, 25 Apr 2023 15:29:37 GMT

Bad bot.

Re: Persistent Memory Redundancy?

MV3 — Fri, 28 Apr 2023 05:30:27 GMT

Hello

RAID is not supported for Intel® Optane™ PMem modules. Intel® Virtual RAID on CPU (Intel® VROC), a RAID solution implemented for Intel® Xeon® Scalable processors, cannot be used too

Cheers...