Chapter 5 Troubleshooting
A501: SDLT Hard Write Error
204 SuperLoader User’s Guide
Table 31 Hard Read
Error/Hard Write Error
Field Descriptions
14
Tape Number
15
Retry Count
Logical Blk Num
(LBN)
16
Head Wear Hours BRC Head Wear Hours
Field Description
Media ID Random number used to identify tapes
Physical Block
Number (PBN)
Physical block location where the error occurred. There is one
physical block for each read/write head on each track. For example,
if there are 4 separate heads and 10 tracks, there would be 40 physical
blocks on a single point of that media.
Tape Address Location on tape in inches
Track Number Track number where error occurred
Retry Count Retry count used when reading
Logical Block Number
(LBN)
A block of data on media that includes all physical block associated
with all heads for that single point of media. For example, in the
forward direction if there are 4 heads and 10 tracks 5 forward and
5 backwards, there would be two logical blocks going backwards.
Yet these two logical blocks would equate to 10 physical blocks.
Head Wear Hours Number of Head Wear Hours for the SDLT Head reported by Servo
BBC Head Wear Hours Number of Head Wear Hours for the BRC Head reported by Servo
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