Subsystem Controls And Indicators; Dcs Operating Controls And Indicators - Honeywell 6000 Series Reference Manual

Before recoverable errors become nonrecoverable, you should declare the suspect
track defective and relocate its data to an alternate track. If more than a single error occurs
on a track within one week, copy the entire disk pack onto another preformatted disk pack,
or declare the track defective and redistribute the data on the disk pack.
When a nonrecoverable read error occurs, do not relocate the data to an alternate
track, or declare the track defective. Instead, restore the data to the user file affected.
An alternative is to move the disk pack to another disk pack drive and retry the Operation.
If this procedure fails, reconstruct either the disk pack or the user file.
It is also possible to get errors during a write operation. In these cases, alternate
tracks should be assigned.
In disk storage unit operations, momentary contact of heads and recording surfaces
is normal. Therefore, surface markings on the recording surfaces can be ignored unless
they are accompanied by operational problems.
SUBSYSTEM CONTROLS AND INDICATORS
cators are described in this manual.
DSC OperatinLControls and Indicators
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