Hi Ajit,
For any RAID level above 1, hardware RAID is much faster.
You need at least 3 disks to implement RAID-5, while 5 disks is
recommended. You lose data storage capacity equivalent to one of the
disks.
If you just want to span drives without building in redundancy, you
can use the built-in Linux RAID-0 (striping).
For explanations of various RAID levels, have a look at the
Multi-Disk-HOWTO (part of the RH distribution) around line 2200.
Regards,
-- Raju
>>>>> "Ajit" == Ajit Ranade <[EMAIL PROTECTED]> writes:
Ajit> raid question-
Ajit> anyone done it in linux? what's the advantage of using a
Ajit> hardware raid controller instead of software controller?
Ajit> we have three 4.3gb scsi hard disks and i am going to add a
Ajit> fourth one (9gb scsi). can this combined disk space of 21.9
Ajit> gb be divided into three so that i have roughly 7gb per raid
Ajit> mirror? can a raid drive span across physical drives?
Ajit> any good url's or howto pages? thanks for any tips.
Ajit> ajit ranade.
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