Re: Two RAID1 mirrors are faster than three

Anders Karlsson
2003-05-12T07:10:40Z

[-- Attachment #1: Type: text/plain, Size: 566 bytes --]

On Mon, 2003-05-12 at 06:41, Paul P Komkoff Jr wrote:

> Replying to Anders Karlsson:
> > downtime on it. You then quiesce the database, split off the second copy
> > from the mirror, mount that as a separate filesystem and back that up
> > while the original with its first copy has already stepped back into
> > full use.
>
> Why do not use snapshots for this?

Snapshots was not around then. AFAIK snapshotting in the LVM is a recent
thing. I know people were doing backups by splitting off the 2nd copy in
a mirror some eight years ago.

/Anders

[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 198 bytes --]