Sorry I was unclear. All LUNs from all arrays (we have 4 kinds of arrays on the FC SAN no 2 alike) are configured to be visible to the entire LDOM cluster. I was discussing impact of a failure of some kind which made some LUNs unreachable (e.g. Failure of the entire array perhaps because the SAN admins upgraded the array firmware in an improper manner and took out both paths or perhaps a power transient tripped us to battery and we have too may KVA and one array gets hit or even better the whole array doesn't go away only the one parity group loses 2 disks in a 6+1 config and your LUN is now history). In such case failover won't help.
----- Original Message ----- From: [email protected] <[email protected]> To: [email protected] <[email protected]> Sent: Wed May 18 12:26:10 2011 Subject: Re: [ldoms-discuss] Solaris cluster in addition in order to move zones between hosts(real or ldom) it is much better to have shared SAN On 5/18/2011 12:21 PM, Hung-ShengTsao (Lao Tsao) Ph.D. wrote: > hi > it seems that you are make life too complicated > 1)if you want to failover zone, you will need SAN that can be access > by both zone (with or without ldom) > 2)if you want failover ldom then you also need SAN that can be access > by both LDOM > > On 5/18/2011 12:01 PM, [email protected] wrote: >> Is it possible (and a good idea or bad idea) to run Solaris cluster >> in failover mode for LDOM2 guests and also separate Solaris Cluster >> of zones in the guests? Auto failover would seem tricky if the LDOM >> can failover though criteria are tricky. >> For example if Zone A in a LDOM has storage from SAN array S1 and >> Zone B in same LDOM has storage from SAN array S2 where there is one >> Fiber Channel fabric (dual attach hopefully to 2 switches) for both >> arrays and then zone A loses connection to S1 but B is happily using >> S2 zone A should failover (or should it?) but not the whole LDOM. >> >> Load balancing of zones in LDOMs is desirable. Perhaps do not allow >> failover of zones? >> >> Sent from my BlackBerry® smartphone with Nextel Direct Connect >> _______________________________________________ >> ldoms-discuss mailing list >> [email protected] >> http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss _______________________________________________ ldoms-discuss mailing list [email protected] http://mail.opensolaris.org/mailman/listinfo/ldoms-discuss
