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Parameter Data Format
The Specified cycle count over device lifetime is a parameter provided by the
device sever. The specified cycle count over device lifetime parameter shall not
be savable by the INIT using the LOG SELECT command. The parameter value
is a 4-byte binary number. The value indicates how operation or reliability outside
the limits specified by the manufacture of the device.
• Start-stop cycle counter (page 0E, code 0004)
Table 5.53 Start-stop cycle counter (page 0E, code 0004)
Bit
Byte
7 6 5 4 3 2 1 0
4
5
(MSB)
X'0004' (Parameter code)
(Accumulated Start-Stop Cycles) (LSB)
DU DS TSD ETC TMC LBIN LP 6
0 1 0 0 0 0 1 1
7 X'04' (Parameter Length)
8 (MSB)
9
10
Accumulated Start-Stop Cycles (4-byte binary number)
11 (LSB)
The Accumulated start-stop cycles is a parameter provided by the device sever.
The accumulated start-stop cycles parameter shall not be savable by the
application client using the LOG SELECT command. The parameter value is a
4-byte binary number. The value indicates how many start-stop cycles the device
has detected since its date of manufacture. For rotating magnetic storage device, a
single start-stop cycle is defined as an operational cycle that begins with the disk
spindle at rest, continues while the disk accelerates to its normal operational
rotational rate, continues during the entire period the disk is rotating, continues as
the disk decelerates toward a resting state, and ends when the disk is no longer
rotating. The count is incremented by one for each complete start-stop cycle. No
comparison with the value of parameter 0003h shall be performed by the device
server.
346 C141-C013