3Par Storeserv 8000 Storage 2.5-Inch Drive Enclosure Drive Placement; 3Par Storeserv 8000 Storage 3.5-Inch Drive Enclosure Drive Placement - HP HPE 3PAR StoreServ 8000 Installation Manual

The first expansion drive enclosure added to a system must be populated with the same
number of drives as the controller node enclosure.
The drives must be identical pairs.
The same number of drives and type should be added to all of the drive enclosures in the
system.
The minimum addition to a 2-node system without expansion drive enclosures is two identical
drives.
The minimum addition to a 4-node system without expansion drive enclosures is four identical
drives.

3PAR StoreServ 8000 Storage 2.5-inch Drive Enclosure Drive Placement

Drive pairs should be placed in the lowest available slot numbers.
Figure 85 3PAR StoreServ 8000 Storage 2.5-inch Drive Enclosure drive placement order

3PAR StoreServ 8000 Storage 3.5-inch Drive Enclosure Drive Placement

Drive pairs should be populated in columns and in the lowest available vertical slots in that
column.
Figure 86 3PAR StoreServ 8000 Storage 3.5-inch Drive Enclosure drive placement order
NOTE: For optimal utilization and performance, drive quantities and types should be configured
symmetrically across all drive enclosures in the system.
124 Adding Drives and Expansion Drive Enclosures