FW 05.01.00 and SW 07.01.00 HP StorageWorks SAN High Availability Planning Guide (AA-RS2DC-TE, June 2003)

Physical Planning Considerations
124 SAN High Availability Planning Guide
Connectivity Planning Considerations
Directors, switches, and the HAFM server can be delivered in an HP-supplied
equipment rack in accordance with customer specifications. Consider the
following Ethernet connectivity issues when:
■ Installing additional rack-mount products — When installing an additional
director or switch, the length of Ethernet cable required to provide LAN
connectivity is a function of rack position (top, bottom, or adjacent to the
slide-out drawer). Ensure cable lengths provide sufficient cable inside the rack
to route to the product’s Ethernet ports and to allow service clearance.
■ Interconnecting equipment racks — To increase the products managed by
one HAFM server, Ethernet hubs in one or more equipment racks must be
connected. Plan for an Ethernet cable length that meets the distance
requirement between the racks. In addition, plan for an additional 1.5 meters
(5 feet) of cable outside the rack to provide slack for service clearance, limited
rack movement, or inadvertent cable pulls. Store extra Ethernet cable in the
rack or under the computer room raised floor.
■ Consolidating HAFM server operation — For control and efficiency, all
directors and switches in a multi-switch fabric should be managed by one
HAFM server. When products in two or more racks are joined to form a
fabric, the PC environment should be consolidated to one server and one or
more clients. Plan for Ethernet cabling to interconnect racks and ensure all
directors, switches, and PC platforms participating in the fabric have unique
IP addresses.
Remote User Workstations
Customer system administrators determine whether to allow access to directors
from remote workstations. If administrators allow remote sessions, they may
restrict access to selected workstations by configuring the IP addresses of those
workstations through the HAFM application. When a remote session is allowed,
the remote user has the same rights and permissions as if the session were on the
local HAFM server. Up to nine HAFM application sessions can be simultaneously
active (one local and eight remote).
Remote workstations must have access to the LAN segment on which the HAFM
server is installed. Director administrative functions are accessed through the
LAN and server.