Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Dear DRBD users I've tested drbd to check its capabilities and we found it a very good product. We are planning to install on production servers. Our idea is to develop a solution for our customers using UBUNTU 8.04 LTS + SOFT RAID5 + DRBD in primary server and UBUNTU 8.04 LTS + SOFT RAID1+DRBD in secondary to do hot backups of virtual machines (servers are running 24h/7d, virtualized windows with sql-server and oracle servers). In our test DRBD worked like a charm because we could do hot backups and off-site backups following these easy steps: 1) Check 100% DRBD synchronization between primary/secondary 2) Force a disconnect from secondary. 3) Force a soft "fake disk failure" for one of the disks of secondary's RAID1 4) Reconnect DRBD between primary and secondary 5) mount "marked as failed disk" and make all the copies you want (on tape, to other disk, usb, nas, etc) 6) Later on, reconnect "fake failed disk" to RAID1 and let RAID1 resynchronize itself. We need to find good hardware with drbd version to afford this solutions without performance problems. -- Jose A. Ferrer Totware