[lustre-discuss] Is it a good practice to use big OST?

[Harr, Cameron]

We run one OST per OSS and each OST is ~580TB. Lustre 2.8 or 2.10, ZFS 0.7.

On 10/8/19 10:50 AM, Carlson, Timothy S wrote:
I’ve been running 100->200TB OSTs making up small petabyte file systems for the last 4 or 5 years with no pain.  Lustre 2.5.x through current generation.

Plenty of ZFS rebuilds when I ran across a set of bad disks that went fine.

From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org><mailto:lustre-discuss-bounces at lists.lustre.org> On Behalf Of wuwj at umich.edu<mailto:wuwj at umich.edu>
Sent: Tuesday, October 8, 2019 10:43 AM
To: lustre-discuss <lustre-discuss at lists.lustre.org><mailto:lustre-discuss at lists.lustre.org>
Subject: [lustre-discuss] Is it a good practice to use big OST?

Hi All
We recently purchased new storage hardware, and that gives us the options of creating big zpools for OSTs (>100TB per OST),
I am wondering if anyone has any experience of using big OSTs and if that would impact the performance of lustre in a good or bad way?


Any comments or suggestions are appreciated!

Cheers!
________________________________
-Wenjing
wuwj at umich.edu<mailto:wuwj at umich.edu>



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