Messages in this thread | | | Date | Wed, 10 Jun 2015 08:59:42 -0500 | From | Goldwyn Rodrigues <> | Subject | Re: clustered MD |
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On 06/10/2015 03:00 AM, Richard Weinberger wrote: > On Wed, Jun 10, 2015 at 5:33 AM, Goldwyn Rodrigues <rgoldwyn@suse.com> wrote: >> David Lang has already responded: The idea is to use a RAID device >> (currently only level 1 mirroring is supported) with multiple nodes of the >> cluster. >> >> Here is a description on how to use it: >> http://marc.info/?l=linux-raid&m=141935561418770&w=2 > > Sorry if this is a stupid question, but how does this compare to DRBD? >
No, it is not.
DRBD is for local devices synced over the network. Cluster-md is for shared devices such as SAN, so all syncs happen over the FC. DRBD works for two nodes (until recently), cluster-md works for multiple nodes.
-- Goldwyn
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