Spare Sector Availability

This selection checks the number of spare sectors available on the optical disk. The spare sectors are used to reassign when defective sectors are encountered during normal usage or during a format and certify operation. Low availability of spare sectors indicates that the disk needs to be backed up and replaced. Formatting the disk does not improve the availability of spare sectors.

You can run this task directly from the AIX command line. See the following command syntax: diag -c-ddeviceName -T chkspares

SSA Service Aid

This service aid provides tools for diagnosing and resolving problems on SSA-attached devices. The following tools are provided:

vSet Service Mode

vLink Verification

vConfiguration Verification

vFormat and Certify Disk

144pSeries 630 Model 6C4 and Model 6E4 User's Guide

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IBM 6C4, 6.00E+04 manual Spare Sector Availability, SSA Service Aid