Thread (10 messages) 10 messages, 5 authors, 2011-01-10

Re: Considering a complete rework of RAID on my home compute server

From: Mark Knecht <hidden>
Date: 2011-01-10 01:45:18

On Sun, Jan 9, 2011 at 4:10 PM, Leslie Rhorer [off-list ref] wrote:
<SNIP>
       What I meant was, you currently have a 2 disk RAID0.  Why not buy a
larger disk and move the 2 drives currently tied up in the RAID0 to a 5 disk
RAID6 array with no partitions?  The function currently provided by the 2nd
RAID1 can be taken over by the single drive, and the function of the RAID0
can be taken over by a directory on the main array.  This makes better
functional use of the space and may provide performance benefits, not to
mention being much simpler.  I'm a fan of having a separate, small disk for
booting.  My servers both have a pair of small drives each partitioned into
three sections.  Each of the partition pairs are in turn assembled into a
RAID array for a total of 3 mounts:

md1 - a tiny /boot
md2 - a small /
md3 - swap.
I believe that is essentially what I'm doing:

- 2 drive RAID0 using 500GB drives is 1TB
- 3 drive RAID1 using 500GB drives is 500GB

- 5 drive RAID6 using 500GB drives is 1.5TB

The RAID0 is moving to the RAID6
The RAID1 is moving to the RAID6

I'll purchase 1 additional 500GB drive to sit cold in my office in
case I drop a drive in the RAID6.

Sounds like it should work out well.

I'll investigate using a different drive for booting.

Thanks,
Mark
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