Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Mon, 2010-02-01 at 20:52 -0800, Qwerty-1 wrote: > Hi All, > > Can someone expalin me what is difference between RAID and DRBD. > > Thanks in Advance Short; RAID is designed for two or more disks connected locally. DRBD is designed to replicate a block-device over a network. Long: You'd use RAID (software or hardware) to increase the reliability of your _local_ storage over 2 or more disks. DRBD would sit on top of your RAID and replicate that data to another server for fail-over purposes. DRBD can also allow two servers to access that data at the same time, which you can't really do with RAID (ignoring the RAID that my underlie a SAN/iSCSI etc), assuming you're using a cluster-aware filesystem (GFS/OCFS2 etc). Mark. -- Mark Watts BSc RHCE MBCS Senior Systems Engineer, Managed Services Manpower www.QinetiQ.com QinetiQ - Delivering customer-focused solutions GPG Key: http://www.linux-corner.info/mwatts.gpg -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 198 bytes Desc: This is a digitally signed message part URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20100202/283ae7e3/attachment.pgp>