Installation and Reference Guide HP StorageWorks Secure Path 3.0F Service Pack 4 for HP-UX 11i v1.0 and 11i v2.0 (5697-8001, March 2009)

Setting up additional SCSI-2 LUNs
The HP-UX sdisk driver allows only 8 LUNs per target. The EMA12000, EMA16000, MA8000, or
RA8000 arrays normally present the LUNs under a single target. You can set the array to present a
second target of another 8 LUNs for a maximum of 16 LUNs for the array.
See Table 3, when deciding which configuration to use.
Table 3 Target or LUNS per array comparison chart with dual fabric
Highest availabilityLower availabilityHighest availability
16 LUNs per array
4 HBAs per server
16 LUNs per array
2 HBAs per server
8 LUNs per array
2 HBAs per server
4 paths per LUN2 paths per LUN4 paths per LUN
Load balancing (across 2 HBAs)No load balancing
Load balancing (across 2 HBAs and
2 controller ports)
With the architecture of the EMA12000, ESA12000, MA8000, or RA8000 array, load balancing
can only be accomplished across ports of the selected controller in a redundant controller pair.
1. Complete all configuration steps described in Hardware setup overview.
During the boot sequence, the ioscan creates a connection table entry in the array. Modifications
to the array's connection table enable the second target of LUNs.
2. Enter the following command for each A5158A, A6795A, or A6685A adapter:
# fcmsutil /dev/td#
3. Record the adapter’s N_Port Port World Wide Name (the last 4 hex digits should suffice)
on a configuration schematic.
4. Establish a CLI connection to the array and enter the following command:
HSG80> show connections
A connection table similar to the following is displayed:
Connection Unit
Name Operating system Controller Port Address Status Offset
!NEWCON13 HP THIS 1 011000 OL this 0
HOST_ID=5006-0B00-0009-DB13 ADAPTER_ID=5006-0B00-0009-DB12
!NEWCON14 HP OTHER 1 021000 OL other 0
HOST_ID=5006-0B00-0009-DB13 ADAPTER_ID=5006-0B00-0009-DB12
!NEWCON15 HP OTHER 2 021000 OL other 0
HOST_ID=5006-0B00-0009-DD71 ADAPTER_ID=5006-0B00-0009-DD70
!NEWCON16 HP THIS 2 011000 OL this 0
HOST_ID=5006-0B00-0009-DD71 ADAPTER_ID=5006-0B00-0009-DD70
In this example, you can see that the adapter -DB12 is connected to port 1 of this controller with
a connection name of !NEWCON13 and to port 1 of other controller with a connection name of
!NEWCON14.
The connection names are assigned by the array. You can change the connection name as per
your convenience or for setting up Selective Storage Presentation for using the array as part of
a SAN. For more information, see the “Restricting Host Access” section in the HSG80 ACS
Solution Software for HP-UX installation and configuration guide.
Secure Path for Active-Passive disk arrays24