Two quick questions...
1) We have a RAID5 array with 3 18GB SCSI disks. The disk is not sold anymore, unfortunately. As long as it matches the type of SCSI controller (U160, etc), are there any other potential issues which could prevent the RAID controller or Linux from being able to add a new and/or larger disk from a different manufacturer to the RAID array?
2) I have read that basically the two things you need to expand a RAID array partition is first, to fdisk the drive, delete the partition, and recreate with the same starting cylinder, but extending it to the full length. And second, to use resize2fs to actually expand the partition. Is this correct, and all that is needed?
Obviously a full set of backups would be ready before any steps were taken.
Thanks in advance.