Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
> No, it's not data backup. RAID-1 is essentially not backup ;) > Backup will be done somewhere else. > > Let's say we have two datacenters and two SAN machines there. Data is > written to and read only in datacenter_1; at the same time, everything > is replicated to a SAN in datacenter_2. > > > It's some sort of assurance that when the datacenter_1 burns down to > ground or gets flooded, it shouldn't take longer than a few hours to > start all the services again in datacenter_2. It's much faster that way > than having to restore the last backups from tapes, decompress, write > where it belongs etc. Still, this will work fine with drbd and w/o heartbeat. Regards Dominik