Hitachi HDT725025VLA380 Specifications - Page 242
S.M.A.R.T. Write Log Sector subcommand D6h, 42.1.8, S.M.A.R.T. Enable Operations subcommand
UPC - 829686001084
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00h 01h 03h 06h 07h 09h 80h-9Fh Log directory S.M.A.R.T. Error Log Extended Comprehensive SMART Error Log S.M.A.R.T. Self-test Log Extended Self-test Log Selective self-test Log Host vendor specific Read Only Read Only See note Read Only See note Read/Write Read/Write Note: Log addresses 03h and 07h are used by the Read Log Ext and Write Log Ext commands. If these log addresses are used with the SMART Read Log Sector command, the device shall return command aborted. 12.42.1.7 S.M.A.R.T. Write Log Sector (subcommand D6h) This command writes 512 bytes of data to the specified log sector. The 512 bytes of data are transferred at a command and the Sector Count value shall be set to one. The Sector Number shall be set to specify the log sector address as shown above. If a Read Only log sector is specified, the device returns ABRT error. 12.42.1.8 S.M.A.R.T. Enable Operations (subcommand D8h) This subcommand enables access to all S.M.A.R.T. capabilities within the device. Prior to receipt of a S.M.A.R.T. Enable Operations subcommand, Attribute Values are neither monitored nor saved by the device. The state of S.M.A.R.T.-either enabled or disabled-will be preserved by the device across power cycles. When enabled, the receipt of subsequent S.M.A.R.T. Enable Operations subcommands will not affect any of the Attribute Values. Upon receipt of the SMART Enable Operations subcommand from the host the device enables S.M.A.R.T. capabilities and functions and then saves any updated Attribute Values to the Attribute Data sector. 12.42.1.9 S.M.A.R.T. Disable Operations (subcommand D9h) This subcommand disables all S.M.A.R.T. capabilities within the device including the attribute Autosave feature of the device. After receipt of this subcommand the device disables all S.M.A.R.T. operations. Non self-preserved Attribute Values will no longer be monitored. The state of S.M.A.R.T.-either enabled or disabled-is preserved by the device across power cycles. Upon receipt of the S.M.A.R.T. Disable Operations subcommand from the host, the device asserts BSY, disables S.M.A.R.T. capabilities and functions, clears BSY, and asserts INTRQ. After receipt of the device of the S.M.A.R.T. Disable Operations subcommand from the host, all other S.M.A.R.T. subcommands-with the exception of S.M.A.R.T. Enable Operations-are disabled and invalid and will be aborted by the device-including the S.M.A.R.T. Disable Operations subcommand-returning the error code as specified in Table 151: "S.M.A.R.T. Error Codes" on page 239. Any Attribute Values accumulated and saved to volatile memory prior to receipt of the S.M.A.R.T. Disable Operations command will be preserved in the device's Attribute Data Sectors. If the device is re-enabled, these Attribute Values will be updated, as needed, upon receipt of a S.M.A.R.T. Read Attribute Values or a S.M.A.R.T. Save Attribute Values command. Deskstar T7K500 Hard Disk Drive Specification 228