Compaq AP550 Compaq Professional Workstation AP550 Maintenance & Service G - Page 139

Fault Management, SMART III Hard Drive Fault Prediction, Ultra ATA Integrity Monitoring

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Diagnostic Tools 4-45 Fault Management Fault Management features combine innovative hardware and software technology to prevent the loss of critical data and minimize unplanned downtime. When a fault occurs, the workstation displays a Local Alert message containing a description of the fault and any recommended actions. You can then view current system health by using Compaq Diagnostics for Windows NT. If the workstation is connected to a network managed by Compaq Insight Manager or other Simple Network Management Protocol (SNMP)-based management products (for example, HP OpenView or IBM Tivoli TME10 NetView), the workstation also sends a fault notice to the network management application. SMART III Hard Drive Fault Prediction SMART III extends SMART II capability. A SMART III hard drive will monitor and report on its own health, in addition to fixing problems before they become failures that result in data losses. The SMART III drive periodically executes read scans of the entire disk. These read scans take place during periods of inactivity. During the scan, the disk drive determines the "health" of each data sector and moves data from questionable areas of the disk to known good areas of the disk. To determine the "health" of the data during the scan, the drive uses sophisticated methods of Cyclic Redundancy Codes (CRC) and Error Checking and Correcting (ECC) codes to flag potentially bad areas of the disk. With today's multi-gigabyte hard drives, there are areas of the disk that are not used (read or write) by applications for long periods of time. The SMART III technology patrols the entire disk so that when unused or infrequently used parts of the disk are called upon, the data will be available. Ultra ATA Integrity Monitoring Ultra ATA Integrity Monitoring monitors the reliability of data as it is transferred between an Ultra ATA hard drive and the system's core logic. If the workstation detects an abnormal number of transmission errors, the screen displays a Local Alert message with recommended actions. If the workstation is on a network, an alert is also sent over the network to the system administrator.

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Diagnostic Tools
4-45
Fault Management
Fault Management features combine innovative hardware and software technology to prevent
the loss of critical data and minimize unplanned downtime.
When a fault occurs, the workstation displays a Local Alert message containing a description of
the fault and any recommended actions. You can then view current system health by using
Compaq Diagnostics for Windows NT. If the workstation is connected to a network managed by
Compaq Insight Manager or other Simple Network Management Protocol (SNMP)–based
management products (for example, HP OpenView or IBM Tivoli TME10 NetView), the
workstation also sends a fault notice to the network management application.
SMART III Hard Drive Fault Prediction
SMART III extends SMART II capability. A SMART III hard drive will monitor and report on
its own health, in addition to fixing problems
before
they become failures that result in data
losses. The SMART III drive periodically executes read scans of the entire disk. These read
scans take place during periods of inactivity. During the scan, the disk drive determines the
“health” of each data sector and moves data from questionable areas of the disk to known good
areas of the disk. To determine the “health” of the data during the scan, the drive uses
sophisticated methods of Cyclic Redundancy Codes (CRC) and Error Checking and Correcting
(ECC) codes to flag potentially bad areas of the disk. With today’s multi-gigabyte hard drives,
there are areas of the disk that are not used (read or write) by applications for long periods of
time. The SMART III technology patrols the entire disk so that when unused or infrequently
used parts of the disk are called upon, the data will be available.
Ultra ATA Integrity Monitoring
Ultra ATA Integrity Monitoring monitors the reliability of data as it is transferred between an
Ultra ATA hard drive and the system’s core logic. If the workstation detects an abnormal
number of transmission errors, the screen displays a Local Alert message with recommended
actions. If the workstation is on a network, an alert is also sent over the network to the system
administrator.