HP Matrix Operating Environment Software - Manual (Page 30)

Volume Creation Security Group requirement
The Volume Creation Security Group requirement specifies the security group into which
a created volume is placed. If not specified, SPM attempts to put the volume in the same security
group as specified for the storage pool. If that is not possible due to the security configuration,
SPM attempts to use the security group of the service or else the only security group in which the
user has the CreateResource permission if there is only one such security group.
30 Storage service policy