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Serving Storage to the iSCSI Initiators from the SR2122 over IP
23iSCSI SR2122 Storage Router: Getting Started Guide
Serving Storage to the iSCSI Initiators from the SR2122 over IP
Up to this point, this chapter has described the SR2122 and its impact on the fibre channel
SAN. It’s now time to turn our attention to the IP side of the router.
SR2122 Devices
Regardless of the SR2122 being in a Standalone or Cluster configuration once storage is
presented to a SR2122, the SR2122 node should recognize these new devices. If not, the
SR2122 can be forced to rescan for devices either through its management GUI within the
Monitor Window or through the CLI command “Show Devices Rediscover”.
To verify that each SR2122 can see the storage LUNs use the Show Devices command.
SR2122> Show Devices
Lun Description Table
Interface WWPN LUN Capacity Vendor Product Serial
--------- ---------------- ----- -------- ------- --------- -------------
1)fc1 50001fe150002f78 0 0KB COMPAQ HSV110 P4889B49ILW05R
2)fc1 50001fe150002f78 1 10GB COMPAQ HSV110 P4889B49ILW05R
3)fc1 50001fe150002f78 2 10GB COMPAQ HSV110 P4889B49ILW05R
4)fc1 50001fe10007bb41 1 0KB DEC HSG80 ZG95004670
5)fc1 50001fe10007bb41 0 0KB DEC HSG80CCL ZG95004670
6)fc1 50001fe10007bb42 1 0KB DEC HSG80 ZG95004652
7)fc1 50001fe10007bb42 0 0KB DEC HSG80CCL ZG95004652
In this example the SR2122 is presented storage from one HSG80 and one HSV110. The line
items are described as:
1. This is the CCL from the HSV110 served from storage port 50001fe150002f78.
2. This is iSCSI_DISK03 from an HSV110 served from storage port 50001fe150002f78.
3. This is iSCSI_DISK04 from an HSV110 served from storage port 50001fe150002f78.
4. This is unit D81 from an HSG80 served from storage port 50001fe10007bb41.
5. This is the CCL from the HSG80 served from storage port 50001fe10007bb41.
6. This is unit D181 from an HSG80 served from storage port 50001fe10007bb42.
If the devices do not appear, the SR2122 can be forced to rescan its FC ports. This is done with
the Show Devices Rediscover command:
SR2122> Show Devices Rediscover
Fibre channel discovery kicked off!
SR2122 Access Lists
Prior to creating a SCSI Router Instance it is necessary to create an Access List entry for each
iSCSI Initiator. This Access List is used when creating the SCSI Router Instance to selectively
route the SR2122 storage to a specific iSCSI initiator. Much like selective storage presentation
on the storage controllers, the SR2122 has the ability to present storage to a specific iSCSI
initiator using its Access List. The Access List, in this case, assigns or cross-references the
iSCSI initiator’s IP address to a host name.
Note: The host name assigned to the IP address does not necessarily have to be the IP address’s
DNS name.