Sony SDX-1100V/R User Manual page 86

6.Command Specification LOG SENSE
Total Rewritten Frames: This is the total number of frames on the tape or within the partition that were needed to
be rewritten since the tape or partition was first written. It is incremented by 1 each time a frame is repeated
following error detection by the Read-After-Write process. This count does not include any frames which are
written between the original frame and its rewrite. The number accumulates over the life of the tape but is ZEROed
by a format pass.
Total 3rd ECC Count: This is the number of groups which have been physically read and data has not been
recovered without requiring the use of C3 correction since the first time the tape or partition was written. The
number accumulates over the life of the tape but is ZEROed by a format pass.
Access Count: This is the number of times the drive accesses the partition. The both an "Unload" and a "Change
Partition" is the event for incrementing the Access Count counter.
Update Replace Count: This is the number of times the drive update the partition.
Previous Rewritten Frames: This is the number of frames on the tape or within the partition that were needed to
be rewritten since the last update of the System area. It is incremented by 1 each time a frame is repeated
following error detection by the Read-After-Write process. This count does not include any frames which are
written between the original frame and its rewrite.
Previous 3rd ECC Count: This is the number of groups which have been physically read and data has not been
recovered without requiring the use of C3 correction since the last update of the System area.
Load Count: This is the number of times the tape has been loaded since the first time a tape was written. One
load consists of threading the media around the drum of the drive mechanism, positioning the tape ready for use
and later unthreading the media. The number accumulates over the life of the tape but is ZEROed by a format
pass. This field is Reserved in the System Log of Partition 0 of a multiple partitioned tape.
Last Valid Absolute Frame Number: This field will specify the Absolute Frame Number which is the number of
Frames written since the beginning of the partition, excluding any Frames that are written in the test area. The first
Frame of the Reference area is the first Frame after the Logical Beginning-Of-Tape (LBOT) point of the current
partition and has an Absolute Frame Number of 1. Any discontinuous or repeated numbers will occur only in an
Amble Frame sequence.
Maximum Absolute Frame Count: This field will specify the Absolute Frame Number of the last Frame of the last
EOD Area as the Maximum Absolute Frame Number. After that, the Maximum Absolute Frame Number is equal to
the Valid Maximum Absolute Frame Number, because the whole data area in the partition contains valid data. The
Maximum Absolute Frame Number will not be changed as long as the partition size is the same.
Partition Attributes: This field is not supported and will be always set to ZERO.
6-32 SONY AIT-5 drive SDX-1100V series Ver.1.0