=> I'm relatively new to SGI (it's been about 7 yrs since my last
=> encounter). I recently, inherited administration to 3 Irix's running
=> 5.x. All machines are installed with one file system per disk.
=> Example: / and /disk02
=> Question: is this standard for SGI? I know that in the HP world many
=> people recommend the one-file-system-per-disk approach. Does SGI too?
=> If so what are the advantages of one FS as opposed to several smaller
=> ones, all mounted under root? I'm inclined to backup, blow away, and
=> reinstall, but I would like to know if I'm missing some significant
=> advantage first. Any thoughts appreciated. Thanks
This is something I've debated with many administrators.
Here's the points that always come up:
Against Single FS:
- If you build a filesystem over many disk, losing any of
those disks means all the data on all the disks is gone.
- Without having system directories on a separate
filesystem, a user can fill up the filesystem and cause
the entire system to mess up. A big problem with a
- If you add disks and go over 8GB, you have to
re-install everything using XFS.
- It's more difficult to backup user files without
getting the OS too.
- The fsck recoveries after a crash often take longer.
For Single FS:
- You don't end up with idle disk space.
- It's easier and faster to set up.
- It's the way SGI does it, so you won't have to
re-install each new machine.
- You can increase disk i/o with striping a single
filesystem across several disks.
Jason C. Austin