C Adding Drives And Expansion Drive Enclosures; Information About Drive Enclosure Upgrades - HP HPE 3PAR StoreServ 8000 Installation Manual

C Adding Drives and Expansion Drive Enclosures

3PAR StoreServ 8000 Storage products include 3PAR licensing that enables all functionality
associated with the system. A failure to register the license key might limit access and restrict
upgrading of your system. Before you proceed with upgrading, verify that all applicable licenses
associated with the system are registered.
For assistance with registering Hewlett Packard Enterprise software licenses, see the Hewlett
Packard Enterprise Support website:
Hewlett Packard Enterprise Support Center (http://www.hpe.com/support/hpesc)
There are two types of drive enclosures that are used for expansion:
HPE 3PAR StoreServ Storage SFF 2.5-inch Drive Enclosure:
HPE 3PAR StoreServ Storage LFF 3.5-inch Drive Enclosure:
For more information about drive enclosures, see

Information About Drive Enclosure Upgrades

The number of drive enclosures attached to a specific controller node pair should be
determined by the desired RAID set size and HA Cage protection requirements. Drive
enclosures should be added and configured to meet the HA Cage protection requirement
for a specific controller node pair, and also consider the RAID set requirement of the customer.
The distribution of drive enclosures between DP-1 and DP-2 of the controller node should
be done to achieve maximum balance across the ports.
When adding both 2U and 4U drive enclosures, they should be mixed on SAS chains (DP-1
and DP-2), added in pairs across controller node pairs on a 4-node system, and balanced
across SAS ports on each controller node pair.
122 Adding Drives and Expansion Drive Enclosures
"Installing Enclosures" (page 28).