Owner manual

Agent information 53
• Rewrites—Displays the number of times blocks that had to be rewritten to the device. This value is maintained
since the Tape Hardware Interface driver was loaded.
Rewrite errors may occasionally occur. If this value should rise dramatically, you may need to clean the device.
If you continue to have rewrites, you may have a problem. Some common causes include radio frequency
interference (RFI) on the bus cables, bad or missing terminating resistors on the drives, or having more than one
device with the same SCSI ID. Ensure the bus cable is free of obstructions and that the devices on the bus are
properly configured.
• Total bytes—Displays the cumulative total number of bytes the tape drive has processed.
• Tape Drive Heads Need Cleaning—Indicates whether the tape drive need to be cleaned. To clean the tape
heads, insert a cleaning tape into the drive and run through a cleaning cycle. The following values are valid:
• Yes—The tape drive requires a cleaning tape session in order to clean the heads.
• No—The tape drive does not require any cleaning tape session.
• Not Supported—The tape drive does not support monitoring of the cleaning required status.
• Cleaning Tape Needs Replacement—Indicates whether the cleaning tape that is inserted in an autoloader needs
to be replaced because its cleaning capability is exhausted (it is at the end of the tape). This variable can be in
one of the following states:
• Yes—The autoloader tape drive requires a new cleaning tape to be inserted.
• No—The tape drive does not require a new cleaning tape.
• Not Supported—The tape drive does not support monitoring of the cleaning tape replacement status.
NOTE: This variable is only applicable to autoloader tape drives.
Storage Systems
For more information on storage systems, see the product information on the HP website https://www.hp.com.
Storage system information is listed below:
• Box Type—Displays the type of drive enclosure, or box. The following types are possible:
• External Storage System—Outside the machine
• Internal Storage System—Inside the machine
• Unknown—The Storage Agents do not recognize the drive enclosure. You may need to upgrade your
software.
• Vendor—Displays the name of the vendor that produces this drive enclosure, or box type. Use this information
for identification purposes.
• Firmware Revision—Displays the firmware revision of the drive enclosure or box. Use this information for
identification purposes.
• Serial Number—Displays the serial number of the drive enclosure or box. Use this information for identification
purposes.
• Fan Status—Displays the status of the fan subsystem in the drive enclosure, or box. The following values are
possible:
• OK—The fan subsystem is working properly.
• Failed—A fan has failed and there are not enough fans in the fan subsystem to keep the enclosure cool.
Check your fan subsystem as soon as possible. Continued operation may cause failure of the drives.
• Degraded—A fan has failed but there are still enough fans in the fan subsystem to keep the enclosure cool.
• Unknown—The Storage Agents do not recognize the status of the fan subsystem. You may need to upgrade
your software.
• No Fan—This storage system does not have a fan.
• Backplane Speed—Displays the speed of the storage system backplane. The following values are possible:
• Ultra3—The storage system is capable of Ultra3 speeds.
• Ultra320—The storage system is capable of Ultra320 speeds.
• Unknown—The Storage Agents are unable to determine the storage system backplane speed. You may
need to upgrade your software.
• Connection Type—Displays the type of connection between the server and the box. The following values are
possible:
• Fibre Attached—This chassis is attached to the server through Fibre Channel.
• SCSI Attached—This chassis is attached to the server with a SCSI cable.