Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.
Pada 6 Mac 2012 4:45 PTG, Felix Frank <ff at mpexnet.de> menulis: > On 03/06/2012 04:27 AM, Umarzuki Mochlis wrote: >> without drbd, A3 would automatically mount A1's LUN & run as >>>> A1 while resuming A1's role via rgmanager > > Without DRBD? How does this work? Are those LUNs on a SAN? > > With DRBD, you would need to set things up so that A3 has 2 DRBD > volumes. One is shared with A1, another with A2. Your cluster manager > would take care to normally have A1 and A2 be primary, and A3 in > respective failover conditions. > > I'm not sure how you separate A1's from A2's services on A3, but your > cluster configuration probably takes care of that already. > >> A1 in case of failure, will failover to A3 >> A2 in case of failure, will failover to A3 > > OK, fine. > yes, the mailbox storages are LUN's on a SAN. it manages to do clustering with rgmanager + cman, so A3 would take where A1 or A2 left off by mounting A1's or A2's mailbox storage on itself since it is already running a standby mailbox service (zimbra-cluster standby server). i believe this is called 2+1 clustering. but now i have to setup another cluster for disaster recovery as i described before using drbd. is there anyway, with this setup that i could achieve what i had intended? FYI, all hardware had been bought and storage had been calculated beforehand which i had no saying or part of. so this is a bit of a problem for me. -- Regards, Umarzuki Mochlis http://debmal.my