HP C737990900 - Manual (Page 71)

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All the parameters relate to the current tape. They are all cleared when the
tape is unloaded, except Parameter 4, which is never cleared. All data will be
reset when the log page is reset. The parameters are as follows.
2 Maximum data rate 2 After each data set has been logically written
3 Current data rate 2 After each data set has been logically written
4 Native data rate 2 Fixed
Parameter Description Length Updated
Repositions per 100 MB Number of tape direction changes per 100 MB written.
Data rate into buffer Rate at which data is entering the buffer (after data compression), given in units of
100 KB/s. This is the true ‘tape’ data rate.
Maximum data rate Given the compressibility of the data that has been sent to the drive, this is the
maximum data rate that could be achieved, given in units of 100 KB/s. The figure will
be worked out based on the compressibility of each dataset received, datasets which
have a compressibility higher than the compression bandwidth of the drive will be
‘capped’.
Current data rate Rate at which data is being accepted by the drive before compression, given in units of
100 KB/s.
Native data rate The native rate (that is, without using compression) at which the drive writes data to
tape, given in units of 100 KB/s:
Drive Value Native Data Rate
full-height 12Ch 30 MB/s