[linux-lvm] LVM for a Database
arechenberg at shermfin.com
Tue Nov 26 16:19:03 UTC 2002
You're going to get better performance if you have /dev/sd[b-e] and then
span across those devices or use LVM striping. That is RAID10.
I have a Dell 6600 with two PowerVault 220S with the second
configuration (12 RAID1 arrays, /dev/sd[c-n]) and then use Linux
software RAID0 to stripe across those 12 RAID1 arrays. It gives fairly
I don't have LVM on top of the RAID0, but I will be doing just that in
the near future and I can post the results here if you wish.
From: Joseph Kezar [mailto:jkezar at doc.state.vt.us]
Sent: Tuesday, November 26, 2002 3:29 PM
To: linux-lvm at sistina.com
Subject: [linux-lvm] LVM for a Database
We are in the process of building a database on a 4 processor 1.8GHz,
4GB RAM Dell 6650.
I am trying to figure out the most efficient way to use LVM for our raw
data storage. We have a RAID array with 8x36GB drives in it. Should I
do a raid 1+0(mirror 4 disks, and span them to get one logical volume)?
If so this leaves me a /dev/sdb. Or would I get better performance if I
mirror 1 + 5, 2 + 6, 3 + 7, 4+ 8 to give me /dev/sd[b-e].
Is it possible to figure out where the center of our spindles are? So I
can arrange for the heads to spend little time seeking?
Any perfomance hints would be greatly appreciated.
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