HP StorageWorks Virtual Array va 7000 family - Installation Guide

Virtual Array Installation Guide 29
VA 7410
The VA 7410 has two independent back-end Fibre Channel loops to improve
performance. The cabling configuration should balance the distribution of disk
modules across both loops. Here are some things to remember when
connecting the VA 7410 back-end cabling:
— All disks in the controller enclosure are connected to loop 1.
— The first disk enclosure should be connected to loop 2 to balance the
disks.
— Additional disk enclosures should be alternated between loops to
balance the number disks on each loop. The number of disk enclosures
on loop 1 should be equal to or one less than the number of enclosures
on loop 2.
— Do not connect a disk enclosure to both loops.
Refer to Figure 14 when connecting disk enclosures to the VA 7410.
1 Determine which disk enclosures will be on loop 1 and which will be on
loop 2.
2 Connect loop 1 disk enclosures as follows.
a Connect a back-end fiber optic cable from the DISK 1 FC port on array
controller 1 to the PORT 0 or PORT 1 FC connector on the closest disk
enclosure on loop 1.
b Connect a back-end fiber optic cable from the DISK 1 FC port on array
controller 2 to the PORT 0 or PORT 1 FC connector on the same disk
enclosure on loop 1.
c Connect all loop 1 disk enclosures together by connecting fiber optic
cables between the PORT 0 and PORT 1 FC connectors on the
enclosures.
3 Connect loop 2 disk enclosures as follows.
a Connect a back-end fiber optic cable from the DISK 2 FC port on array
controller 1 to the PORT 0 or PORT 1 FC connector on the closest disk
enclosure on loop 2.
b Connect a back-end fiber optic cable from the DISK 2 FC port on array
controller 2 to the PORT 0 or PORT 1 FC connector on the same disk
enclosure on loop 2.
c Connect all loop 2 disk enclosures together by connecting fiber optic
cables between the PORT 0 and PORT 1 FC connectors on the
enclosures.