[gpfsug-discuss] SLES 12 SP1 support for Spectrum Scale

[Greg.Lehmann]

Hi All,
   Given the issues with supporting RHEL 7.2 I am wondering about 
the latest SLES release and support. Is anybody running actually running it on 
SLES 12 SP1. I've seen reference to a kernel version that is in SLES 12 SP1, 
but I'm not sure I trust it as the same document also says RHEL 7.2 is 
supported for SS 4.2.

http://www.ibm.com/support/knowledgecenter/STXKQY/gpfsclustersfaq.html

Cheers,

Greg
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Re: [gpfsug-discuss] SSD LUN setup

[Brian Marshall]

That's very good advice.  In my specific case, I am looking at lowlevel
setup of the NSDs in a SSD storage pool with metadata stored elsewhere (on
another SSD system).  I am wondering if stuff like SSD pagepool size comes
into play or if I just look at the segment size from the storage enclosure
RAID controller.

It sounds like SSDs should be used just like HDDs: group them into RAID6
LUNs.  Write endurance is good enough now that longevity is not a problem
and there are plenty of IOPs to do parity work.  Does this sound right?
Anyone doing anything else?

Brian

On Sun, Jul 17, 2016 at 9:05 AM, Oesterlin, Robert <
robert.oester...@nuance.com> wrote:

> Thinly provisioned (compressed) metadata volumes is unsupported according
> to IBM. See the GPFS FAQ here, question 4.12:
>
>
>
> "Placing GPFS metadata on an NSD backed by a thinly provisioned volume is
> dangerous and unsupported."
>
>
>
> http://www.ibm.com/support/knowledgecenter/en/STXKQY/gpfsclustersfaq.html
>
>
>
> Bob Oesterlin
> Sr Storage Engineer, Nuance HPC Grid
> 507-269-0413
>
>
>
>
>
> *From: * on behalf of Brian
> Marshall 
> *Reply-To: *gpfsug main discussion list 
> *Date: *Saturday, July 16, 2016 at 9:56 PM
> *To: *"gpfsug-discuss@spectrumscale.org"  >
> *Subject: *[EXTERNAL] [gpfsug-discuss] SSD LUN setup
>
>
>
> I have read about other products doing RAID1 with deduplication and
> compression to take less than the 50% capacity hit.
>
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