User`s guide

2 – System Overview
Installation Checklist
FS0054601-00 E 2-5
Q
■ Both hosts X and Y can recognize both targets on both HBAs. In SANblade
Manager, each target device is configured with one HBA as its preferred path
and (optionally) one HBA as its alternate path. Be sure that both controllers are
configured as enabled and not masked on a target level.
■ On host X, the LUN mask for both controllers is set to enable LUNs 0–3 and
disable all other LUNs. This LUN mask must be consistent for both the left and
right controllers so that LUN alternates in the RAID system function correctly.
On host Y, the LUN mask for both controllers is set to enable LUNs 4–7 and
disable all other LUNs.
■ The two alternate systems function independently, based on the configuration,
operation of the RAID subsystem’s LUN alternate, and type of failure that occurs.
If access to a target controller is lost, RAID subsystem LUN failover handles the
recovery. If access to a target controller is available on an alternate path, HBA
failover handles the recovery.
2.3
Installation Checklist
This section describes the installation process step-by-step. Note that your
configuration may not require all steps, depending on the features you require.
2.3.1
Step 1: Collect the Hardware and Software
2.3.1.1
Required Hardware
Collect the required hardware. In all cases, some combination of the following is
required:
■ QLogic HBAs
■ Target devices such as disks, RAID subsystems, etc. Note that tape devices are
displayed as part of the configuration, but are not supported by SANsurfer (no
support for failover, load balancing, LUN masking, or diagnostics).
■ Connectivity hardware such as cables, hubs, fabric switches, etc.