Chapter 6 First-Time Configuration 6-9
The number of host IDs depends on the configuration mode:
■ In point-to-point mode, only one ID should be assigned to each channel.
■ In loop mode, up to 16 IDs can be assigned to each Fibre Channel, not to exceed a
maximum of 32 IDs per array.
Typically host IDs are distributed between the primary and secondary controllers to
load-balance the I/O in the most effective manner for the network.
Each ID must be a unique number within the host channel. You can:
■ Edit each host ID number to change the target number of each controller host
channel that is seen by the host
■ Add additional host ID numbers for loop configurations
Note – To map 1024 partitions in loop mode, you must add additional host IDs so
that 32 IDs are mapped to the array’s channels. Several configurations are possible,
such as eight IDs mapped to each of the four host channels or sixteen IDs mapped to
two channels and none to the other two. For more information, see “Planning for
1024 LUNs (Optional, Loop Mode Only)” on page 6-37.
To add a unique host ID number to a host channel, perform the following steps.
TABLE 6-1 Default Host Channel IDs
Channel Primary Controller ID
(PID)
Secondary Controller ID
(SID)
Channel 0 40 N/A
Channel 1 N/A 42
Channel 4 44 N/A
Channel 5 N/A 46
To Next Page
Loading...
Need help?
General
