Guidelines For A Drive Addition; Adding Drives-Sp 4.X - HPE 3PAR StoreServ 8000 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.
Figure 47: Example of an unbalanced LFF drive allocation in one LFF enclosure

Guidelines for a drive addition

This information is for the drives added to an HPE 3PAR StoreServ 8000 Storage system.
• Keep existing drives in the enclosures in their drive-bay slots.
• Add drives following the guidelines for installing, allocating, and balancing.
• Add drives in the next available slots of the enclosure.
• For an upgrade of only SFF drives, install the drives by splitting the drives evenly across all the SFF
drive enclosures. If an equal distribution is not possible, get as close as possible while still following
the guidelines for the drives.
• For an upgrade of only LFF drives, install the drives by splitting the drives evenly across all the LFF
drive enclosures. If an equal distribution is not possible, get as close as possible while still following
the guidelines for the drives.
• For an upgrade with a mix of SFF and LFF drives, install the drives by splitting the SFF drives across
all the SFF drive enclosures and the LFF drives across all the LFF drive enclosures with as much of
an equal distribution as possible between the enclosures. If an equal distribution is not possible, get as
close as possible while still following the guidelines for the drives.
Adding drives—SP 4.x
This procedure is for the addition of drives using HPE 3PAR Service Processor (SP) 4.x.
Upgrade 61