[DRBD-user] Drbd on one host and 2 partitions

Reykjavik hindisvik hindisvik at gmail.com
Mon Jan 25 18:33:22 CET 2010

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.

OK, Thank you very much for these explanations. I already use DRBD on two
nodes with two disk and everything works fine. I was just wondering if I
could use DRBD in this situation, I have the answer now :)



2010/1/25 Lars Ellenberg <lars.ellenberg at linbit.com>

> On Mon, Jan 25, 2010 at 01:13:32PM +0100, Reykjavik hindisvik wrote:
> > thanx for your answer.
> >
> > ... Even if the 2 partitions are 2 SCSI targets? do you think I can do
> > software RAID on 2 iscsi parts?
> That is what you get for not providing enough context ;)
> DRBD is for replication between two nodes,
> which typically form a HA cluster and/or desaster recovery group.
> DRBD is not the "I want my SANs to replicate,
> but don't want to pay the licence" solution.
> DRBD is the solution to _replace_ your single SAN box
> with a clustering solution, using e.g. Pacemaker + DRBD + iSCSI (+ NFS,
> + SAMBA), and direct attached storage on the cluster nodes. For the
> price of one SAN, you can get the whole cluster + LINBIT support ;)
> Of course, that does not help you once you have those SANs already.
> So, YES, of course you can utilize DRBD to replicate between SANs, as
> well.  Typically you'd have your SANs in different fire section (or
> different sites, even), and have (at least) one DRBD "head" node for
> each SAN.  We at LINBIT have encountered quite a few interesting setups
> in that area.
> If you want to repliate within _one_ node, however,
> that is not DRBD's job.
> --
> : Lars Ellenberg
> : LINBIT | Your Way to High Availability
> : DRBD/HA support and consulting http://www.linbit.com
> DRBD® and LINBIT® are registered trademarks of LINBIT, Austria.
> __
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