5 Apr
2012
5 Apr
'12
10:05 a.m.
Russell Coker wrote:
i'm wondering if iscsi kind of obsoletes drbd, and if mdadm raid1 over two iscsi exports would be better than drbd.
I've considered that with NBD instead of ISCSI.
Why NBD over AOE? Last time I looked at HA storage I looked at drbd vs. AOE+mdadm, and I concluded the latter was not acceptable because even a momentary network outage between the AOE nodes would cause mdadm to degrade the array. (IIRC I didn't know about -binternal at the time, tho.) I didn't end up deploying either, because the customer's use case for HA was silly and I managed to convince them they didn't need it.