HP StorageWorks External Storage XP user guide for the XP12000, XP10000, SVS200 (T1706-96009, October 2007)

Device information about the command device that the remote command device reports to the host
includes:
•Serialnumber
•Vendor
•Devicename
NOTE:
ThedevicenamereportedtothehostisthesameastheonedisplayedintheDevice column of the
Device list.Forthedevicenamesreportedtothehost,seeTable 10.
• Even if the status of the remote command device is normal, an error may occur when the
operations or commands are performed on the remote command device.
If an error occurs even though the status of the remote command device is normal, check the status of
the command device of the external array, not the remote command device.
• The following are restrictions for mapping command devices as remote command devices.
Table 11 Restrictions on remote command devices
Item
Restriction
Emulation type
OPEN-V
NumberofLDEVsinanexternalLU
1
IO Suppression mode Disable
Cache mode Disable
Minimum capacity
96,000 blocks (about 47 MB)
Maximum capacity
2TB
• External Storage XP's Discovery operation cannot identify remote command devices.
• You cannot execute I/Os to remote command devices.
• You cannot set command devices to disabled on remote command devices.
• You cannot set command devices' security on remote command devices.
• Do not set command devices' security on the external array side for command devices mapped as
remote command devices.
• You cannot create LUSE volumes using remote command devices.
• You cannot use Volume Manager to create CVs in remote command devices.
• Cache LUN XP is not available on remote command devices.
Mapping command devices as remote command devices
To map command devices in external arrays as remote command devices, see Mapping external LUs
(Add LU).
NOTE:
Command devices that can be mapped as remote command devices are displayed on External Storage
XP's panes as shown in Table 10.
When you select Discovery in the Device tree on the LU Operation pane, the external array's WWNs
appear. When you select an external array's WWN in the Device tree, information such as OPEN-V-CM
appears in the Device column of the Device list for command devices that can be mapped. Select a
command device that can be mapped, and follow the procedure in Mapping external LUs (Add LU)
to map it.
External Storage XP user guide
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