HP ProLiant DL380 G5 Server - Manual (Page 66)

Spare drives
A list of spare drives that can be used by this logical drive to replace a failed drive. Select one of the listed spare
drives to see more information about the drive.
SCSI bus information
Select a SCSI device from the SCSI controller submenu to display more information about the device. The following
information might appear depending on the type of device:
• Parity Errors—Displays the number of parity errors that occurred on the SCSI bus while the bus was processing
commands. The error count is kept from the time the SCSI Hardware Interface Driver was loaded.
Parity errors might occasionally occur over time. If this number rises dramatically, and you suspect a problem,
complete the following steps:
a. Ensure that the cables are not damaged and that they are intact and properly shielded from possible RFI.
b. Ensure that all required terminating resistors on all devices on the SCSI bus are present.
c. Ensure that each device on the SCSI bus has a unique SCSI ID.
• Phase Errors—Displays the number of times the SCSI bus entered an invalid operating state while processing
commands. The number of errors is counted from the time the SCSI Hardware Interface Driver was loaded.
If you see any phase errors, the device might have a problem. Phase errors can be caused by a device that is
not operating correctly. If the phase errors continue to increase, replace the device.
• Select Timeouts—Displays the number of times the controller attempted to start communications with a device
and received no response from the device. The number of errors is counted from the time the SCSI Hardware
Interface Driver was loaded.
The number of select timeouts should always be 0. Any other number of timeouts might indicate a problem with
the device. The SCSI controller attempts to reset the device, but if the value continues to increase, power cycle
the device.
A large number for this item does not indicate a problem. It shows that the device does not support certain
advanced SCSI commands that the device driver issued.
• Message Rejects—Displays the number of times the device rejected a command because the device does not
support the specific operation. The number of errors is counted since the SCSI Hardware Interface Driver was
loaded.
• Physical Width—Displays the actual width of the data transfer bus for this device. The following values are
valid:
• Narrow (8 bits)—The device supports a narrow 8-bit data transfer bus.
• Wide (16 bits)—The device supports a wide 16-bit data transfer bus.
• Unknown—The Storage Agents are unable to determine the physical data transfer width for this device.
• Current Width—Displays the width of the data transfer bus that was negotiated between the controller and the
device. If this value is less than the device physical data bus width, the device will not provide maximum
performance. Maximum throughput is achieved when both the SCSI controller and device support a wide 16-bit
data bus. The following values are valid:
• Narrow (8 bits)—The negotiated data bus transfer width is narrow (8 data bits).
• Wide (16 bits) —The negotiated data bus transfer width is wide (16 data bits).
• Unknown—The Storage Agents are unable to determine the current data transfer width negotiated for this
device.
• Current Speed—Displays the current negotiated data transfer speed for this device. The following values are
valid:
• Asynchronous—The negotiated data transfer speed for this device is asynchronous.
• SCSI-1—The negotiated data transfer speed for this device is 5 million transfers per second.
• Fast—The negotiated data transfer speed for this device is 10 million transfers per second.
• Ultra—The negotiated data transfer speed for this device is 20 million transfers per second.
• Ultra2—The negotiated data transfer speed for this device is 40 million transfers per second.
• Ultra3—The negotiated data transfer speed for this device is 80 million transfers per second.
• Ultra320—The negotiated data transfer speed for this device is 160 million transfers per second.
• Unknown—The agent is unable to determine the current negotiated data transfer speed for this device.
Agent information 66