[DRBD-user] Definitive answer on >4TB DRBD volumes

Iustin Pop iustin at google.com
Tue Jul 22 12:09:39 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.


On Tue, Jul 22, 2008 at 12:01:48PM +0200, Lars Ellenberg wrote:
> 	you need 32 MB in core RAM per TB storage,
> 	which is pinned by DRBDs bitmap.
> 	that is 512 MB RAM for 16 TB total storage,
> 	          1 GB RAM for 32 TB total storage.

Oh, this is very nice information, thank you. I'm curious if the memory
requirements are the same for:
  - one 4TB device and
  - eight 512GB devices?

I guess yes, since you mention "total storage", but I wouldn't mind a
confirmation :)

thanks in advance,
iustin



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