HP ESA10000 User Manual download pdf (Page 18)

RA7000 / ESA10000 High Availability Solution Kit for HP-UX

1–4 EK–HAHPU–MH. B01

1.3 Perform a System Backup

Follow normal procedures to backup the RAID subsystem and the host servers in

your cluster, as applicable, prior to installing any of the cluster components.

1.4 Plan the Basic Cluster Layout (SCSI Bus Interconnect)

To plan the layout of cluster components through the SCSI bus, first define the

two ends of the SCSI bus by selecting

where you want to locate the RAID

subsystem on the bus relative to the other components (the two HP hosts and, if

applicable, the SCSI Hub). Determining the RAID location depends on your

preference or any physical limitations of your facility (see

“Note”

below). You

can locate the RAID subsystem:

•

In the middle of the SCSI bus - (Mid-Bus RAID)

•

Radiating from a Hub - (Hub-Radiant RAID)

•

On an end of the SCSI bus - (End-Bus RAID)

NOTE

The maximum bus length for a mid-bus or an end-

bus RAID layout is 25M (

include

the Y-cable

length when calculating total bus length).

For a hub-radiant RAID layout, the maximum

distance of each radial arm (from the hub to a

device) is 25M.

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 39 40

No comments

HP ESA10000 User Manual Page 18