Owner manual

Agent information 58
• Firmware Version—Displays the SCSI controller’s BIOS firmware version number. This information is not
available for all SCSI controllers.
• Bus Width—Displays the physical width of the data transfer bus of the SCSI controller. The following values are
valid:
• Narrow (8 bits)—The controller supports a narrow 8-bit data transfer bus.
• Wide (16 bits)—The controller supports a wide 16-bit data transfer bus.
• Unknown—The agent is unable to determine the physical width of the data transfer bus. You might need to
upgrade your software.
• Hard Resets—Displays the number of times the SCSI Hardware Interface Driver detected that the SCSI bus has
been reset since the driver was loaded.
Hard resets occasionally occur due to device errors. If this value rises dramatically, there might be a problem.
Review the SCSI bus information for unusually high error counts. A device with a large number of bus errors
might be failing and require replacement.
• Soft Resets—Displays the number of times the SCSI Hardware Interface Driver has issued a reset command to all
devices on a SCSI bus since the driver was loaded. Soft resets occur when the device driver is initializing the
SCSI bus for operation or when device errors have left the bus in an ambiguous, nonoperational state.
If this value rises dramatically, there might be a problem. Review the SCSI Bus Information for unusually high
error counts. If there is a device with a large number of bus errors, it might be failing and require replacement.
• Timeouts—Displays the number of times the SCSI Hardware Interface Driver issued a SCSI command but did not
receive a reply within a specific amount of time. This count is kept from the time the driver was loaded.
Timeouts might occur when a device fails to process a request because the SCSI bus was busy. However, if this
value rises dramatically, there might be a problem. Verify that non-disk SCSI devices (such as tape drives) reside
on the SCSI bus with the drives. Non-disk devices can require the SCSI bus for long periods, resulting in
timeouts.
SCSI device information
The information displayed for each SCSI device entry in the submenu includes condition graphic, location (SCSI ID),
and device type. Select any of the physical devices from the submenu to display more information about the device.
The following information is a list of device types and the information displayed for all SCSI devices:
• Device Type—Identifies the type of SCSI device. The following values are valid:
• Disk—A direct-access device, such as a disk drive.
• Removable Disk—A removable media device, such as a floppy disk drive.
• Tape—A sequential-access device, such as a tape drive.
• Printer—A printer device.
• Processor—An operating device, such as a central processing unit or ProLiant Storage System.
• WORM drive—A write-once, read-many times device.
• DVD/CD-ROM—A DVD-ROM or CD-ROM device. It can be a read-only device or read-write device.
• Power Drive CD-ROM—A storage device that can read from a CD and write to or read from an optical disk.
• CR3500 RAID Controller—A three-channel SCSI RAID controller.
• Scanner—A scanning device.
• Optical—An optical memory or storage device.
• Jukebox—A media-changer device, such as a jukebox.
• Tape Library—A tape library or autoloader device.
• Communications Device—A communications device, such as a LAN bridge.
• Unknown—You might need to upgrade your support software or Storage Agents.
The following items returned by the SCSI inquiry command can be used for identification purposes:
• Vendor—Displays the vendor’s name for the SCSI device
• Model—Displays a description of the SCSI device model
• Firmware Version—Displays the firmware revision level of the SCSI device
Tape library
Select a tape library entry in the SCSI controller submenu to display a list of information and status associated with
the selected tape library. The following information is displayed:
• Status—Displays the current status of the tape library. The following values are valid:
• OK—Indicates that the library is in normal operation mode. No user action is necessary.