[DRBD-user] difference in speed when using external metadata

J. Ryan Earl oss at jryanearl.us
Mon Jan 10 19:40:17 CET 2011

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


On Sun, Jan 9, 2011 at 10:03 AM, Bart Coninckx <bart.coninckx at telenet.be>wrote:

> Hi all,
>
> am reading the Novell docs on DRBD and one of the ways they mention to
> speed
> up DRBD is using external metadata. Possibly a hard question to answer but
> could someone indicate by what degree this would enhance speed (provided
> using
> a sufficient fast disk for the metadata, like a SSD)?
>
> thx!
>
> Bart
>

A RAID controller with a backed-write cache essentially nullifies
any advantage there.  A RAID controller that can instantly return on
FUA-writes is what you want.
-JR
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