[KLUG Members] Moving a HDD

[Adam Tauno Williams]

> > Quite good when you drop 150GB of DASD into a small office that currently had
> > 9GB in their old server and you have no clue what you might like to do down the
> > road.
> It is also important you don't over spend on your IT.  It is a horrible
> thing to sink $1000 into a 150 GB Disk Array/LVM, only to find out
> you'll never use more than 10/20 GB of it and the hardware you bought
> will be very depreciated in 18 months.

Don't forget about file system allocation;  most file-systems start to
drop off performance-wise after reaching ~1/3 capacity.  If you actually
want to use nearly the entire capacity of a filesystem you pretty much
have to be using XFS.  And it is useful to leave space in the volume
group to create snapshots - the more your filesystem is busy the more
snapshot space you'll need.  Backing up a snapshot vs. a live filesystem
is a good way to avoid oddities-upon-restore the occur when a live
filesystem is backed up.