AMCC 3WARE 9590SE Uživatelská příručka stáhnout pdf (Strana 50)

Chapter 2. CLI Syntax Reference

44 3ware Serial ATA RAID Controller User Guide

For details about setting up a schedule for background selftest tasks, see

“Setting Up a Selftest Schedule” on page 54.

Selftest activity provides two types of selftests; UDMA (Ultra Direct

Memory Access) and SMART (Self Monitoring Analysis and Reporting).

Both self tests are checked once each day by default.

UDMA self test entails checking the current ATA bus speed (between

controller and attached disk), which could have been throttled down during

previous operations and increase the speed for best performance (usually one

level higher). Possible speeds include 33, 66, 100 and 133 Mhz.

SMART activity instructs the controller to check certain SMART supported

thresholds by the disk vendor. An AEN is logged to the alarms page if a drive

reports a SMART failure. (SMART data is available only for SATA drives.)

The show selftest command displays the current selftest background task

schedule as illustrated below. Selftests do not have a time duration since they

are completed momentarily.

//localhost> /c1 show selftest

Note: UDMA mode is applicable only for PATA (parallel ATA) drives on earlier

3ware controllers. It is not applicable for SATA or SAS drives.

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