[DRBD-user] Choosing right combination of md-raid, LVM and DRBD

Rustedt, Florian florian.rustedt at smartnet.de
Thu Sep 27 16:27:27 CEST 2007

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Hello List,

We want to setup a new HA-server and are on the way to test drbd/heartbeat.
We have two servers with two disks per server and two Gbit-ifaces in each.

What is now the best(most performant and secure) way to configure this?

MD-Raid mirror on the disks per server, then LVM ontop and then DRBD on the
resulting partititions? Or LVM -> RAID -> DRBD?

And what is the right setup for the partitions?

The ideal-case would be, that both systems are able to boot the same data
from scratch, but i saw in the list and google, that most systems do NOT
use DRBD for the root-partition? Why not? Isn't it stable enough?

So what is the best way to partition tihs beast? And why?

And is basically LVM a good choice or does it have a remarkable impact on
performance, so it would be better, to keep rid of it?

Kind regards, Florian
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