MIG31
12 years agoLevel 4
disk group
hallo Symantec world just curious whats the advantage of having a single disk group over multiple diskgroups in a SG
thanks,
MIG31
We normally create diskgroups according to usage.
For example, all disks for one Oracle instance will be added to one diskgroup.
Therefore, an Oracle server with multiple instances will have one diskgroup for each instance.
Diskgroups are also important when replication is introduced. All disks belonging to an application need to be in the same diskgroup to ensure consistency, especially where asyncronous replication is done.
We recently had to convince a customer that different diskgroups for databases and logs had to be joined before replication could be enabled.