User Manual

SCSI Commands Reference Manual, Rev. J 365
www.seagate.com Parameters for direct access devices
5.2.19.2 Percentage Used Endurance Indicator log parameter
The Percentage Used Endurance Indicator log parameter has the format shown in Table 345.
PARAMETER CODE field
The PARAMETER CODE field is described in 5.2.2.2.2 and shall be set to the value shown in table 169 for the Percentage Used Endurance Indica-
tor log parameter.
PARAMETER LENGTH field
The PARAMETER LENGTH field is described in SPC-5 and shall be set to the value shown in table 169 for the Percentage Used Endurance Indica-
tor log parameter.
PERCENTAGE USED ENDURANCE INDICATOR field
The PERCENTAGE USED ENDURANCE INDICATOR field indicates an estimate of the percentage of device life that has been used. The value in
the field shall be set to zero at the time of manufacture. A value of 100 indicates that the estimated endurance of the device has been con
-
sumed, but may not indicate a device failure (e.g., minimum power-off data retention capability reached for devices using flash technology).
The value is allowed to exceed 100. Values greater than 254 shall be reported as 255. The device server shall update the value at least once per
power-on hour.
Table 345 Percentage Used Endurance Indicator log parameter format
Bit
Byte
7 6 5 4 3 2 1 0
0
(MSB)
PARAMETER CODE (0001h)
1
(LSB)
2
PARAMETER CONTROL BYTE – binary format list log parameter (see 5.2.2.2.2.5)
3
PARAMETER LENGTH (04h)
4
RESERVED
. . .
6
7
PERCENTAGE USED ENDURANCE INDICATOR