HP XP20000/XP24000 HP StorageWorks XP Disk Array Configuration Guide (T5278-96 - Page 59
Setting the host mode for the disk array ports
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Path configuration for OpenVMS requires the following steps: 1. Define one command device LUN per array and present it to the OpenVMS hosts across all connected paths. 2. If host mode option 33 is not enabled, for all LUNs, determine the device number as follows (once OpenVMS sees the XP disks): OpenVMS device name ($1$dgaxxx), where xxx = CU with LDEV appended (Then convert the created number from hex to decimal) Example For a LUN with a CU of 2 and an LDEV of 59: CU with LDEV appended = 259 259 hex = 601 decimal The example LUN is presented to OpenVMS as $1$dga601. 3. For all LUNs if host mode option 33 is used, the DGA device number is the UUID value for the LUN. 4. Once all paths are defined, use the SYSMAN utility on each OpenVMS system in the SAN to discover the array ports and LUNs just added. For a single system: $run sys$system:sysman io autoconfigure/LOG For all systems in an OpenVMS cluster: $run sys$system:sysman sysman> set environment/cluster sysman> io autoconfigure/log 5. Verify the online status of the XP LUNs, and confirm that all expected LUNs are shown online. Setting the host mode for the disk array ports After the disk array is installed, you must set the host mode for each host group that is configured on a disk array port to match the host OS. Set the host mode using LUN Manager in XP Remote Web Console (shown) or P9000 or XP Command View Advanced Edition Software. For procedures, see the applicable user guide available at http://www.hp.com/support/manuals. If these are not available, the HP service representative can set the host mode using the SVP. The required host mode setting for OpenVMS is 05. Installing and configuring the disk array 59
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