MIB: CPQIDA-MIB
Physical Drive Size in MB.
This is the size of the physical drive in megabytes.
This value is calculated using the value 1,048,576 (2^20) as a megabyte.
Drive manufacturers sometimes use the number 1,000,000 as a megabyte when giving drive capacities so this value may differ
from the advertised size of a drive. This field is only applicable for controllers which support SCSI drives,
and therefore is not supported by the IDA or IDA-2 controllers. The field will contain 0xFFFFFFFF if the drive capacity cannot be calculated
or if the controller does not support SCSI drives.