[Lustre-discuss] Disk array setup opinions

Ben Evans Ben.Evans at terascala.com
Mon Mar 11 07:08:13 PDT 2013

1 RG->1 LUN -> 1 OST is the way to go.

Also, max out the cache block size (should be 32k), and pay for the High Performance Keys.  Both those changes make a huge difference in performance.

-Ben Evans
From: lustre-discuss-bounces at lists.lustre.org [lustre-discuss-bounces at lists.lustre.org] on behalf of Jerome, Ron [Ron.Jerome at ssc-spc.gc.ca]
Sent: Monday, March 11, 2013 9:01 AM
To: 'lustre-discuss at lists.lustre.org'
Subject: [Lustre-discuss] Disk array setup opinions

I am currently having a debate about the best way to carve up Dell MD3200's to be used as OST's in a Lustre file system and I invite this community to weigh in...

I am of the opinion that it should be setup as multiple raid groups each having a single LUN, with each raid group representing an OST, while my colleague feels that it should be setup as a single raid group across the whole array with multiple LUNS, with each LUN representing an OST.

Does anyone in this group have an opinion (one way or another)?


Ron Jerome
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