[DRBD-user] DRBD and compression

Tomasz Chmielewski mangoo at wpkg.org
Wed Aug 27 20:25:15 CEST 2008

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

As DRBD does not support compression and I saw a couple of posts on this 
list asking about compression in DRBD, I thought I'd made a quick test 
to see how much could I save.

I used OpenVPN's lzo compression to test it; I was running the test for 
a couple of days.

DRBD was holding a couple of Xen and VMware guests.

You can see more information here:


Note that compressing the link between two DRBD machines make sense over 
a WAN interface only (if you have to pay for the amount of data 
transferred, the link is too slow, or both).

Tomasz Chmielewski

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