disk degraded

15 pts.
Tags:
AS/400
Disk drives
WRKDSKSTS
My as400 is showing a status of 'degraded' when doing a 'wrkdsksts'. I would assume that one of the disk has failed but all say operational when using display hardware resources. Help!

Answer Wiki

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If you use F1 (Help) on the display you will see in the help text:

DEGRADED
Indicates that a decrease in performance has occurred because a
component that is not critical has failed. No data is lost due
to this failure, but the damaged unit needs to be repaired or
replaced.

Bruce Vining
Bruce Vining Services

It could be your cache battery needs replacing.

==========
Disk degraded might be caused by some hardware errors or incompatibility issues. You to carefully make sure that the disk is compatible with other hardware parts of the computer system.

Discuss This Question: 6  Replies

 
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  • Nosaints
    but how do you know what is the damaged unit
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  • bvining
    On the WRKDSKSTS display the unit number is shown. Using F1 on the unit value you see: The disk unit identifier is the same number used by the display disk configuration function of system service tools.
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  • Roblumley
    The most common fault for this is the battery that is used for disk caching needs replacing.
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  • moeensokkar
    What else causes this problem because I faced this problem and replaced battery two times but disks still degraded, what should I do?
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  • ToddN2000
    @moeensokkar: Replacing the battery won't resolve the disk issue. You can have a disk become unstable for a few reasons. Example: A system/power failure if it's not on a UPS backup. This can cause damaged sectors and enough of these over time will add up.
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  • azohawk
    moeensokkar, Did you follow the proper procedures, including going into SST to tell the system that the battery was being removed and after the physical battery was replaced, in SST telling the system that the batter was ready? Not sure of the exact procedure as the CE does this for us when he replaces the battery.
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