[Drbd-dev] Compression in DRBD

Philipp Reisner philipp.reisner at linbit.com
Wed Mar 7 12:55:39 CET 2007

Am Mittwoch, 7. März 2007 11:16 schrieb komal:
> Hi all,
>           Bandwidth is an important issue in DRBD during replication of
> data. If bandwidth is properly utilized then replication will be faster
> and speed is what everyone needs.
>         When bandwidth utilization comes into picture, compressing data
> is what
> is needed. Earlier discussions were going on to use vtun with a tcp
> tunnel with zlib compression factor 9 or so to achieve compression.
>         What about implementing compression in DRBD itself. Like using
> zlib to
> compress each packet and decompress it on receiver side in DRBD code
> itself rather than using vtun and all. Wont it solve the purpose?


DRBD is a really complex piece of software, and I really do not want to
duplicate anything that can get achieved on other levels.

Compression on the network can for sure be achieved by other means 
(outside of DRBD).

: Dipl-Ing Philipp Reisner                      Tel +43-1-8178292-50 :
: LINBIT Information Technologies GmbH          Fax +43-1-8178292-82 :
: Vivenotgasse 48, 1120 Vienna, Austria        http://www.linbit.com :

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