User manual SEAGATE ATLAS 15K II

[. . . ] Maxtor Atlas 15K II Product Manual Maxtor Atlas 15K II Product Manual August 24, 2004 PN: 000001910 © 2004 Maxtor Corporation. Printed in U. S. A. This publication could include technical inaccuracies or typographical errors. Changes are periodically made to the information herein ­ which will be incorporated in revised editions of the publication. Maxtor may make changes or improvements in the product(s) described in this publication at any time and without notice. [. . . ] After the condition has been reported, the interval timer restarts. MRIE 4 Interval Timer 0 A value of 0 in the Interval Timer field indicates that the disk drive will only report the informational exception condition once. A value of FFFFFFFFh in the Interval Timer field indicates that the timer interval is vendor-specific. If the disk drive's predictor detects a SMART threshold trip, it reports the failure only if it has not reported a failure within the last interval timer period. A value of 0 means that there is no required waiting between SMART reports. The value contained in this field indicates the number of times to report an informational exception condition to the application client. A value of 0 in this field indicates there is no limit on the number of times the disk drive will report an informational exception condition. Each time the disk drive detects a SMART failure, the SMART status is reported the number of times indicated by the value of the Report Count field. The disk drive then resets its cumulative values and continues with its predicting activity. The SMART threshold trip remains permanent (or until a LOG SELECT command clears it) and can be retrieved at any time using MRIE mode 6. NOTE: The Report Count field does not apply to MRIE mode 6. Report Count 1 Table 5-84 Codes Used by the MRIE Field Field 0h Description No reporting of informational exception condition. This method of reporting instructs the disk drive to report informational exception conditions by using the rules for asynchronous event reporting as described in the SCSI-3 Architecture Model and the relevant Protocol Standard. The sense key will be set to RECOVERED ERROR and the additional sense code will indicate the cause of the informational exception condition. This method of reporting instructs the disk drive to report informational exception conditions by returning a CHECK CONDITION status on any command. 1h 2h The sense key is set to UNIT ATTENTION and the additional sense code will indicate the cause of the information exception condition. The command that has the CHECK CONDITION will not be executed before the informational exception condition is reported. This method of reporting instructs the disk drive to report informational exception conditions dependent on the value of the PER bit of the Error Recovery Parameters Mode Page, by returning a CHECK CONDITION status on any command. The sense key will be set to RECOVERED ERROR and the additional sense code will indicate the cause of the informational exception condition. The command that has the CHECK CONDITION will complete before and informational exception condition is reported. 3h Maxtor Atlas 15K II 5-61 SCSI Description Field Description Unconditionally Generate Recovered Error. This method of reporting instructs the disk drive to report informational exception conditions regardless of the value of the PER bit of the Error Recovery Parameters Mode Page, by returning a CHECK CONDITION status on any command. The sense key will be set to RECOVERED ERROR and the additional sense code will indicate the cause of the informational exception condition. The command that has the CHECK CONDITION will complete without error before any informational exception condition will be reported. This method of reporting instructs the disk drive to report informational exception conditions by returning a CHECK CONDITION status on any command. The sense key will be set to NO SENSE and the additional sense code will indicate the cause of the informational exception condition. [. . . ] It involves monitoring drive current while seeking to a selected track, waiting for 1/ 2 a revolution, then seeking to a track that is 1/ 3 of the total actuator stroke from the first. The number of tracks written within each inch of disk's surface, used as a measure of how closely the tracks are packed on a disk surface. TRACK ­ One of the many concentric magnetic circle patterns written on a disk surface as a guide for storing and reading data. TRACK DENSITY ­ How closely the tracks are packed on a disk surface. [. . . ]