[ADSM-L] ISILON storage/FILE DEVCLASS performance issues

2018-05-11 11:40:47
Subject: [ADSM-L] ISILON storage/FILE DEVCLASS performance issues
From: Zoltan Forray <zforray AT VCU DOT EDU>
Date: Fri, 11 May 2018 11:39:08 -0400

ISP on RHEL 6   10G connectivity

We need some guidance on trying to figure out why ISP/TSM write perform to
ISILON storage (via FILE DEVCLASS) is so horrible.

We recently attached 200TB of ISILON storage to this server so we could
empty the 36TB of onboard disk drives to move this server to new hardware.

However, per my OS and SAN folks, we are only seeing 1Gbs level of data
movement from the ISP server.  Doing a regular file copy to this same
storage peaks at 10Gbs speeds.

So what, if anything, are we doing wrong when it comes to configuring the
storage for ISP to use?  Are there some secret controls/settings/options to
tell it to use the storage at max-speeds?

We tried changing the Est/Max capacity thinking larger files would reduce
the overhead of allocating new pieces constantly.  Changed the Mount Limit
to a bigger number.  Nothing has helped.

Only thing uses the storage right now is migrations from the original disk

*Zoltan Forray*
Spectrum Protect (p.k.a. TSM) Software & Hardware Administrator
Xymon Monitor Administrator
VMware Administrator
Virginia Commonwealth University
UCC/Office of Technology Services
zforray AT vcu DOT edu - 804-828-4807
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