Guidelines For Adding More Drives To The Storage System; Upgrading To Add Drives-Sp 4.X - HPE 3PAR StoreServ 7000 Storage Service And Upgrade Manual

CAUTION:
This example demonstrates an unbalanced allocation due to the NL Drives being installed across
all four columns.
Instead, the correct way to load the Drives is loading in the first column before moving to the next
column to the right.

Guidelines for adding more Drives to the storage system

When adding more HPE 3PAR StoreServ 7000 Storage Drives to the storage system, previously installed
Drives do not need to be removed for the sake of keeping Drives of the same type together. Additional
Drives should be installed in the next available slots, following the rules for allocation and balancing
between enclosures.
• The first expansion Drive Enclosure added to a system must be populated with the same number of
Drives as the Controller Node Enclosure.
• Upgrades can be only SFF Drives, only LFF Drives, or a mixture of SFF and LFF Drives.
• For an upgrade of only SFF Drives, install the Drives by splitting the Drives evenly across all of the
SFF Drive Enclosures.
• For an upgrade of only LFF Drives, install the Drives by splitting the Drives evenly across all of the
LFF Drive Enclosures.
• For an upgrade with a mix of SFF and LFF Drives, install the Drives in pairs (Drive Pair) of the same
type by splitting the SFF Drives across all of the SFF Drive Enclosures and the LFF Drives across all
of the LFF Drive Enclosures with as much of an equal distribution as possible between the enclosures.
If an equal distribution is not possible, you should get as close as possible without breaking the rules.
Upgrading to add Drives—SP 4.x
This procedure is for the upgrade of installing HPE 3PAR StoreServ 7000 Storage Drives using HPE
3PAR Service Processor (SP) 4.x.
Example of an unbalanced allocation in one LFF enclosure
Guidelines for adding more Drives to the storage system 35