Formating Raid drives

Protex · 01-28-2004, 10:03 AM

I'm wondering if there is any particular way to format raid drives.

I have 2 sata 80 GB drives set up in raid 0 (stripping).

WHen i dmesg, i see that they are idetified as sda and sdb.

So do i need to format both drives??? I was under the impression that if i was running in raid 0, i should only have to format one 160 gb partition.

help please.

nesware · 01-28-2004, 04:23 PM

man raidtab

make a /etc/raidtab

Code:

       raiddev /dev/md0
           raid-level              0
           nr-raid-disks           2
           persistent-superblock   0
           chunk-size              8

           device                  /dev/hda1
           raid-disk               0
           device                  /dev/hdb1
           raid-disk               1

fdisk your drives and make the partitions raid type: fd Linux raid autodetect
then run mkraid /dev/md0
mkfs.whatever /dev/md0
mount your /dev/md0

Protex · 01-29-2004, 09:13 AM

This is appilicable for hardware raid? If so, how would i do a clean install using this?

nesware · 01-30-2004, 12:06 PM

? no idea.... what's the practical difference between hardware and software raid?

i asume you need a driver for your raid hardware in the install bootdisk... and ehm... how does it work in say windows / redhat? if the hardware raid takes care of all the disk stuff. i think you only need to fdisk the drive and mkfs it... what's the kernel output on the hardware disks?