Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
On Monday 17 December 2007 12:50:26 Tomasz Chmielewski wrote: > Is heartbeat really necessary to use DRBD? > > I just want to replicate an array/disk/volume from one datacenter to > another, but I don't need any heartbeat's features - so perhaps > heartbeat is not necessary? > > On the other hand, documentation mentions heartbeat a lot. > > Can I use DRBD without heartbeat? Yes. However heartbeat, when properly configured (which isn't hard), will take away some of the management issues from you, such as promoting a device to Primary status. Should you use it without heartbeat? Depends on why you are using DRBD in the first place. Heartbeat will allow you to automagically fail-over to the Secondary node in a DRBD cluster, allowing you to continue to provide storage access in the event of [certain kinds of] failure. For example, you can place an IP address, DRBD Filesystem and Apache under the control of heartbeat. On failure of the Primary node, those services will be "migrated" [started] on the Secondary node (and if properly configured, the Primary will be fenced out of existance); thus keeping your website live. Mark. -- Mark Watts BSc RHCE MBCS Senior Systems Engineer QinetiQ Trusted Information Management Trusted Solutions and Services Group GPG Key: http://keyserver.veridis.com:11371/search?q=0x455420ED -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: This is a digitally signed message part. URL: <http://lists.linbit.com/pipermail/drbd-user/attachments/20071217/798e01da/attachment.pgp>