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Connecting External Storage Systems A-11
Hitachi Universal Storage Platform V/VM Universal Volume Manager User’s Guide
Path Status Examples of Recovery Procedure
Cannot detect
port
There is a problem with connection to the external storage system. The possible
causes are:
The fibre cable is not physically connected in the proper way.
The setting of the topology does not match between the external port and the
target port.
If the external storage system is connected through switches, the settings for
the switches may not be appropriate.
Make sure that the fibre cable is connected properly, and then set the fibre
channel port properly using LUN Manager.
The LUN security may have been enabled by LUN Manager. Check if the LUN
security is enabled or not. If the LUN security is enabled, disable the LUN
security.
Lightning 9900V Storage System
When you connect a Lightning 9900V storage system as the external storage
system, you need to set the port to the host group for the Windows hosts
(host mode 0C: Windows, host mode 2C: Windows Extension).
Also, the port attribute must be the target port or the RCU target port.
Path Status and Examples of Recovery Procedure (9900V)
This section describes errors that require recovery operation on the external
storage system side when the path status is not normal. When the path status
is not normal, see the following table to recover the path status. If you cannot
restore the path, call the Hitachi Data Systems Support Center (see
Calling the
Hitachi Data Systems Support Center
).
Table A-11 Path Status and Examples of Recovery Procedure (9900V)
Path Status Examples of Recovery Procedure
External device
setting changed
Settings of the LU paths may have been changed by LUN Manager. Check the
settings of the LU paths. If the settings of the LU paths have been changed,
change the settings back to the ones when the volume is mapped. Or use
Universal Volume Manager to perform the Delete LU operation and perform the
Add LU operation again.
The access attribute of the volume may have been changed by Open LDEV
Guard. Check the access attribute of the volume. If the volume is protected by
the access attribute, release the protection.
Illegal request or
Response error
The volume may have been set as a pair volume for data copy. Check if the
volume is set as a pair volume of ShadowImage, TrueCopy, or some other copy
program. If the volume is set as a pair volume, the volume may be protected
because of the pair status. When the volume is protected, change the pair status
or delete the pair.
The access attribute of the volume may have been changed by Open LDEV
Guard. Check the access attribute of the volume. If the volume is protected by
the access attribute, release the protection.