Apple Processor Cage and Clips Instalační příručka stáhnout pdf (Strana 40)

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 disk drive pairs in each drive enclosure.

Figure 23 HP M6710 Drive Enclosure (2U24) Disk Drive Placement Order

Guidelines for Allocating and Loading Order (3.5 inch Large Form Factor

(LFF) disk drive)

Columns of drives in an HP M6720 Drive Enclosure must be of the same device type (NL or SSD).

NL disk drives and 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 7400 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 drives in pairs

so they are balanced across the device ports, and then added to enclosures on the same port.

The LFF 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.

Figure 24 M6720 Drive Enclosure (4U24) Disk Drive Placement Order

Guidelines for Allocating and Loading Order (Mixed SFF and LFF disk drives)

In a storage system with mixed HP M6710 and M6720 Drive Enclosures there is a minimum of

three pairs of drives for each drive enclosure. Additional upgrades can include all SFF, LFF or a

mixture of SFF and LFF drives but, they must be in pairs of the same drive type. Follow the loading

order as in the sections above for SFF and LFF drives.

WARNING! If the StoreServ is enabled with the Data-at-Rest (DAR) encryption feature, only use

the self-encrypting drives (SED). Using a non-self-encrypting drive may cause errors during the

upgrade process.

40 Installing Storage System Components into a Rack

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Apple Processor Cage and Clips Instalační příručka Strana 40