User`s guide

RA8000/ESA12000 HSG80 Solution Software V8.5 for Sun Solaris
Page 48 387372-005 AA–RFBPE–TE
Connecting Via the Host SCSI Port
Client may indicate that it cannot find your subsystem if you attempt to connect
via the host SCSI port by using Windows NT in either of the following
situations:
• A StorageWorks controller subsystem is connected to the host, but the
subsystem has no virtual disks configured on it in SCSI-2 mode with CCL
disabled.
• A StorageWorks controller subsystem is not connected to the host.
If you are using SCSI-2 mode and Windows NT, you must disable the Command
Console LUN and create a virtual disk by using a serial connection. For more
information on the Command Console LUN, refer to the Compaq StorageWorks
Command Console V2.2 for RAID Array 8000/ESA12000 User Guide.
Note that because Agent uses a SCSI host bus connection to its subsystems, the
same rules mentioned above also apply.
Communications Failure on Power up with Low Batteries
If the battery in your cache is discharged when you power up the controller, the
controller may produce an invalid cache error. If you are using Client as your
controller interface at that time, the error may prevent communication with the
controller. In this case, the controller status bar in Client changes to yellow, and
the program displays a window containing error information.
To clear the error, you must exit Client and use a normal controller maintenance
terminal to issue the CLEAR ERRORS INVALID_CACHE command before
you can use the controller. See your controller documentation for instructions on
use of the CLEAR ERRORS INVALID_CACHE command.
If the battery remains low, the invalid cache error may reappear. In this case, you
can operate your controller with reduced capability, or you can change its cache
policy to get around its built-in battery protection, although at some risk to your
data. Refer to your controller documentation for details on its cache policy
controls.
After you have cleared the invalid cache error, you can use either a normal
maintenance terminal or Client as your controller interface.