A DRL log tracks differences between two plexes. A DCO log tracks differences between a volume and its snapshot. A DCM log (used in VVR) tracks differences between two volumes.
A RAID5 log contains data. It is not a bitmap. Also, it does not appear as a "LOGONLY" plex. In the State column of vxprint output it reports as "LOG". And, a R5 volume's log is associated by default. You'd have to delete the log deliberately. A DRL, DCO, and DCM logs are bitmaps. Performance is a non-issue with bits. On Thu, Jan 20, 2011 at 1:24 PM, Hudes, Dana <hud...@hra.nyc.gov> wrote: > What is the distinction between DRL and DCO log? > > Then there’s a RAID5 log which is different. > > In terms of reliability, I can I believe mirror a DRL but the DCO shows up > concat even if I give it 2 disks ; ditto raid5 log. > > > -- William (Bill) Havey Symantec HA Professional 917 515-3385
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