[Lustre-discuss] Disk array setup opinions

[Ben Evans]

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)?

Regards,

Ron Jerome
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