diskuse on SAN

[Morten Kristiansen]

Hi,

On direct attached disks or local disks the rule is not to have over 90% used disk capasity. But is that true on a SAN disk as well?

From what I've heard it is the filesystem that works harder and slower when the disks has a diskuse over 90%. Is that true no matter what type of disk and disksystem you have, and what files you have on those disks (ie. database files which does not extend any more, ever)?

We are running on hpux 11i and are using vxfs as filesystem.

mk

[Sunil Sharma_1 · Accepted solution]

Hi,

This is not disusage this should be File system usages if your are using LVM, Vxvm or any other volume manager. it's hardly make any sense what kind of disk you are using.

10% rule is not applicable for all file system when you file system size is big say 100 GB then 5% free space is sufficient.

This rule or say guidlines came when File system used to be in few 100 MBs.

Sunil