HP 3PAR StoreServ 7450 4-node HP 3PAR StoreServ 7450 Storage Installation Guid - Page 24

Guidelines for Installing Hard Drives in Drive Enclosures

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8. Remove the blank filler panels before Installing the hard drives into the slots. 9. To ensure proper thermal control, install blank filler panels into any empty slots. Guidelines for Installing Hard Drives in Drive Enclosures This section provides information about the requirements and installation order for hard drives in SFF and LFF drive enclosures. Only 2.5 inch hard drives can be installed in HP M6710 (2U) and HP M6720 (4U) controller node and drive enclosures. The 3.5 inch hard drives can be installed only in 4U M6720 drive enclosures. For all drive enclosures, the slots should be balanced. For example, if two hard drives are added to DP-1, two hard drives should be added to a drive enclosure attached to DP-2. Drives should be added so that all enclosures are balanced with an even number of drives in each enclosure. For all drive enclosures, the proper system temperature must be maintained. To ensure proper thermal control, blank filler panels must be installed in any slots without drives. Guidelines for Allocating and Loading Order (2.5 inch SFF hard drive) For a node or M6710 Drive Enclosure, the hard drives must be added in identical pairs, starting from slot 0 on the left and filling to the right, leaving no empty slots between drives. The best practice when upgrading or building a system is to add the same number of identical drives to every drive enclosure in the system, with a minimum of three hard drive pairs in each drive enclosure. Figure 22 HP M6710 Drive Enclosure (2U24) Hard Drive Placement Order Guidelines for Allocating and Loading Order (3.5 inch LFF hard drive) Columns of hard drives in an HP M6720 Drive Enclosure must be of the same device type (SSD). The SSDs must not be mixed in the same column. For an HP M6720 Drive Enclosure, drives must be installed in identical pairs, starting from the slot at the bottom of the left column and filling up with drives of the same type, leaving no empty slots between drives in the column. Populate drives in the columns from bottom to top and from left to right. The best practice when upgrading or building a system is to add the same number of identical drives to every HP M6720 Drive Enclosure in the system, with a minimum of two drives added to each LFF chassis. The minimum supported upgrade for a 7450 with one or more expansion HP M6720 Drive Enclosures is two identical drives added to adjacent slots in the same column of the same chassis. If there are more than one expansion enclosure in the system, add the SSDs in pairs so they are balanced across the device ports, and then added to enclosures on the same port. The LFF hard drives added to the HP M6720 Drive Enclosure on each node pair should be balanced across node pairs, then across device ports on each node pair, and finally by enclosures on the same port. 24 Installing Storage System Components into a Rack

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8.
Remove the blank filler panels before Installing the hard drives into the slots.
9.
To ensure proper thermal control, install blank filler panels into any empty slots.
Guidelines for Installing Hard Drives in Drive Enclosures
This section provides information about the requirements and installation order for hard drives in
SFF and LFF drive enclosures.
Only 2.5 inch hard drives can be installed in HP M6710 (2U) and HP M6720 (4U) controller
node and drive enclosures. The 3.5 inch hard drives can be installed only in 4U M6720 drive
enclosures.
For all drive enclosures, the slots should be balanced. For example, if two hard drives are added
to DP-1, two hard drives should be added to a drive enclosure attached to DP-2. Drives should be
added so that all enclosures are balanced with an even number of drives in each enclosure.
For all drive enclosures, the proper system temperature must be maintained. To ensure proper
thermal control, blank filler panels must be installed in any slots without drives.
Guidelines for Allocating and Loading Order (2.5 inch SFF hard drive)
For a node or M6710 Drive Enclosure, the hard drives must be added in identical pairs, starting
from slot 0 on the left and filling to the right, leaving no empty slots between drives. The best
practice when upgrading or building a system is to add the same number of identical drives to
every drive enclosure in the system, with a minimum of three hard drive pairs in each drive enclosure.
Figure 22 HP M6710 Drive Enclosure (2U24) Hard Drive Placement Order
Guidelines for Allocating and Loading Order (3.5 inch LFF hard drive)
Columns of hard drives in an HP M6720 Drive Enclosure must be of the same device type (SSD).
The SSDs must not be mixed in the same column. For an HP M6720 Drive Enclosure, drives must
be installed in identical pairs, starting from the slot at the bottom of the left column and filling up
with drives of the same type, leaving no empty slots between drives in the column. Populate drives
in the columns from bottom to top and from left to right.
The best practice when upgrading or building a system is to add the same number of identical
drives to every HP M6720 Drive Enclosure in the system, with a minimum of two drives added to
each LFF chassis. The minimum supported upgrade for a 7450 with one or more expansion HP
M6720 Drive Enclosures is two identical drives added to adjacent slots in the same column of the
same chassis. If there are more than one expansion enclosure in the system, add the SSDs in pairs
so they are balanced across the device ports, and then added to enclosures on the same port.
The LFF hard drives added to the HP M6720 Drive Enclosure on each node pair should be balanced
across node pairs, then across device ports on each node pair, and finally by enclosures on the
same port.
24
Installing Storage System Components into a Rack