HP StorageWorks Scalable File Share System Installation and Upgrade Guide Version 2.2

Step 6: Creating an EVA4000 host entry for the administration and MDS servers 6–7
closed with the CD-ROM still in place; if this happens, the server will attempt to boot from CD-ROM
the next time it is booted.
Proceed to Section 6.6 to create an EVA4000 host entry for the administration and MDS servers.
6.6 Step 6: Creating an EVA4000 host entry for the administration
and MDS servers
To allow a server to have access to a virtual disk, you must present the virtual disk as a LUN to the HBA
ports on the server. In the HP SFS system, a virtual disk must be presented to both HBA ports in a server and
must also be presented to both servers in a server pair. In effect, the virtual disk must be presented to four
HBA ports.
To manage the presentation of virtual disks to servers, the EVA4000 array must know the WWIDs of the
HBA ports in each server in the server pair. In EVA4000 terms, the HBA ports are associated with hosts.
Each host entry represents the HBA ports in a server pair (that is, each host represents four HBA ports), and
hosts are used to present the virtual disks to the servers.
You must create a host entry for the administration and MDS server pair on the array (or arrays
1
) that will
be accessed by the pair. You can create a host entry using either the SSSU utility, or the Command View
EVA Web interface. Both of these methods are described here.
Before you can create a host entry for the administration and MDS servers, you must identify the WWIDs
of the HBA ports in the administration server by entering the command shown in the following example. At
this point in the installation, you cannot determine the WWIDs of the HBA ports in the MDS server, so you
cannot complete the details of the host entry; you will update the host entry later when you install the MDS
server:
# /usr/bin/hpls_scan_luns --scan_only
.
.
.
hpls_scan_luns: HBAs:
hpls_scan_luns: hba: 0 wwid: 210000e08b0eed9e
hpls_scan_luns: hba: 1 wwid: 210100e08b2eed9e
.
.
.
Record this information in the EVA4000 array worksheet for the array (see Table B-9 in Appendix B).
Using the SSSU utility
To create the host entry on the EVA4000 array using the SSSU utility, connect to the array where you plan
to put the administration LUN, the MDS LUNs, and the service LUN for the administration and MDS server
pair, as shown in the following example:
# sssu
.
.
.
sssu> select system HSV01
HSV01>
Then enter the commands shown in the following example, where the south1-south2 host is created on
the HSV01 array:
1.On large systems where OST services are not run on the administration and MDS servers, there is one dedicated EVA4000 array
for the administration and MDS server pair.
On smaller systems where OST services are run on the administration and MDS servers, two EVA4000 arrays are assigned to the
administration and MDS server pair. In this case, you must create a host entry on each of the arrays that are assigned to the
administration and MDS server pair, so that you can later present the virtual disks that are to be used as OST LUNs.