HP StoreEver MSL6480 Tape Library User Manual
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Figure 19 Advanced failover diagnostic application
The Devices pane lists the tape drives and media changers that are associated with the path failover
drivers. This panel lists all devices that are capable of supporting advanced path failover regardless
of whether they are configured to use advanced path failover. In the example above Changer0
and Changer2 are paths to an ESL G3 library partition that is not using advanced path failover
so two entries are shown for the same changer. Changer1has advanced path failover enabled
and is only listed once. Since LTO-5 and older drives do not support advanced path failover, only
LTO-6 and newer drives will be listed.
The Paths pane shows information about the device which is selected in the Drives pane. In
, the information is for the media changer named “Changer1.” The capital A in the Port
column of the Paths pane indicates the active control path to the SMC device server that is currently
being used, and the lower case a indicates alternate active control paths to the SMC device server.
All other paths are passive, i.e., they pass through a passive control path drive (see
passive control path drives” (page 13)
).
If the selected device is a tape drive, the capital A indicates the active data path, and there will
be no lower case a.
The Cached Driver Data pane shows the last state of the selected device that was reported by the
failover drivers to the diagnostic application. Because changes in the drivers’ information about
a device are not automatically sent to the diagnostic application, it is necessary to perform a refresh
to get the latest state of the drivers. For tape libraries the cached driver data will contain information
about reservations and prevent media removal as shown in
For tape drives the reservation and prevent media removal information is not tracked by the driver
so the Cached Driver Data pane will not include that information for tape drives.
The Device Information pane contains data requested from the tape and changer devices when
various actions are performed.
Windows debugging logs and tools
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