Hitachi 7K250 Specifications - Page 211
Self-test log data structure
UPC - 000004558972
View all Hitachi 7K250 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 211 highlights
The state field contains a value indicating the device state when command was issued to the device. Value x0h x1h x2h x3h x4h x5h-xAh xBh-xFh State Unknown Sleep Standby Active/Idle S.M.A.R.T. Off-line or Self-test Reserved Vendor specific The value of 'x' is vendor specific 12.42.6 Self-test log data structure The following table defines the 512 bytes that make up the Self-test log sector. All multibyte fields shown in these data structures follow the ATA/ATAPI-5 specifications for byte ordering. Table 126: Self-test log data structure Description Data structure revision Self-test number Self-test execution status Life time power on hours Self-test failure check point LBA of first failure Vendor specific ... Vendor specific Self-test log pointer Reserved Data structure checksum Byte Offset 2 00h 1 n*18h+02h 1 n*18h+03h 2 n*18h+04h 1 n*18h+06h 4 n*18h+07h 15 n*18h+08h 2 1FAh 1 1FCh 2 1FDh 1 1FFh 512 Note: N is 0 through 20 The data structure contains the descriptor of the Self-test that the device has performed. Each descriptor is 24 bytes long and the self-test data structure is capable to contain up to 21 descriptors. After 21 descriptors has been recorded, the oldest descriptor will be overwritten with the new descriptor. The self-test log index points to the most recent descriptor. When there is no descriptor, the value is 0. When there are one or more descriptors, the value is 1 through 21. Deskstar 7K250 Hard Disk Drive Specification 197