Seagate ST3655N Manual de usuario descargar pdf (Pagina 12)

SANtools® S.M.A.R.T. Disk Monitor (SMARTMon-UX)6

· If the O/S indicates there are LUNs, then they are added to the device list as well.

· Finally IDE disks and ATAPI (CDROMs) are discovered and added to the table if found.

· UAC and appropriate manifest information was added in 1.35 to insure native compatibility with Windows Vista and

Windows 2008.

Device Polling:

After all devices have been discovered, they will be polled at a configurable interval. If none is supplied, all disks will

be polled every 10 minutes. This is the recommended value defined by the S.M.A.R.T. specification. IDE drives are

polled first (if LINUX), then the SCSI disks. Tapes or devices with removable medium are not polled. In the case of

IDE disk drives, SMARTMon requests the status result of the internal S.M.A.R.T. diagnostic registers that are

constantly being updated during idle times and I/Os by the disk drives themselves. SMARTMon-UX does NOT

instruct the disk to run a diagnostic test at the current polling interval. It asks the IDE disk what it's S.M.A.R.T. status

is at the time of the poll.

If the device is not an IDE disk, SMARTMon-UX instructs the disk drive to read a block of data into the bit bucket to

initiate a S.M.A.R.T. error notification. It also checks the SMART log page and temperature pages, if the disk is

equipped with them.

If an error is found (which would indicate a degrading condition, and impending drive failure), a message is logged in

the system log file, /vary/log/messages, using the standard UNIX syslog facility. In addition, if EMAIL is enabled

and configured on your LINUX system, an email is sent to the address specified. If the operator invoked

SMARTMon-UX with the -L option, these messages will be found in the file, /vary/log/smartmon-ux.

If no errors are found, an S.M.A.R.T. test passed message is logged to syslog as well. All messages contain a

time-date stamp, and reference smartmon-ux as the program creating the message.

SES Enclosure Polling:

If the device is in an SES enclosure (applicable to fibre channel host-attached enclosures only), the program must first

determine if it may be used to communicate with the SES electronics embedded in the intelligent enclosure. This must

be done because not all disks may have this capability, as defined by the particular make and model of enclosure.

If SMARTMon determines that the selected device can not communicate with the enclosure, it marks the drive

accordingly, and it does not attempt to communicate again.

If the disk can access the SES status registers, the software retrieves them and parses status information. If the

status shows there is a problem, the software reports the problem in the manner selected by the software's installer.

SES polling will only be done if the -E command-line option is specified on the command line.

SAF-TE Enclosure Polling:

SAF-TE enclosures will always have a unique SCSI ID and LUN associated with them and appear as a SCSI

processor type device. If SMARTMon determines that the device is a processor-type, it will determine if it is a SAF-TE

enclosure by sending the appropriate commands and parse the output.

If SMARTMon determines that the selected device is a SAF-TE enclosure, it will mark it as pollable and will poll it if

the -E option is specified on the command line. Otherwise the device will not be polled.

SAF-TE polling will only be done if the -E command-line option is specified on the command line.

Threshold Monitoring:

When the program is invoked with the -W option, and a corresponding user-defined threshold file, it loads them into

the program's memory so they will not have to be re-loaded. As thresholds are loaded, the program determines the

minimum common polling frequency to examine thresholds. (See Threshold Monitoring and Threshold

Configuration sections for details).

At the defined polling period, the program scans through the list of thresholds for a device that needs polling and is

on-line. It issues a Log Sense command to the device for the page holding the required information. The resulting

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