ZyXEL NSA-220 Plus User Guide - Page 235
S.M.A.R.T. Attributes, continued
View all ZyXEL NSA-220 Plus manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 235 highlights
Chapter 8 Package Management Table 79 S.M.A.R.T. Attributes (continued) ID ATTRIBUTE NAME BETTE R DESCRIPTION 19 Airflow 0 Temperature Low This indicates the temperature of the airflow measured by a Western Digital hard drive. 19 Temperature 0 Difference from 100 High This indicates the value of 100 - the temperature in degrees Celsius. Manufacturers can set a minimum threshold that corresponds to a maximum temperature. 19 G-sense error Low 1 rate This is the number of mistakes caused by impact loads. 19 Power-off Low 2 Retract Count This is how many times the heads are loaded off the media. 19 Load/Unload 3 Cycle Low This is the number of load and unload cycles into head landing zone position. 19 Temperature Low 4 This is the hard drive's internal temperature. 19 Hardware ECC High 5 Recovered This is the time between ECC (Error Correction Code)corrected errors. 19 Reallocation 6 Event Count Low This is the total number of reallocation (remap) operations. The raw value is the total attempts to move data from reallocated sectors to a spare area. Successful and unsuccessful attempts are both included. 19 Current Low 7 Pending Sector Count This is the number of unstable sectors awaiting reallocation. If the sector is later successfully written or read, this value decreases and reallocation is not performed. Only failed write attempts cause a reallocation, not read errors. This can be difficult to test since only direct I/O writes to the disk cause reallocations, not cached writes. 19 Uncorrectable Low 8 Sector Count This is the number of errors reading or writing a sector that were not correctable. An increase in this value is an indicator of disk surface defects or mechanical subsystem problems. 19 UltraDMA CRC Low 9 Error Count This is the number of data transfer errors through the interface cable according to the ICRC (Interface Cyclic Redundancy Check). 20 Write Error 0 Rate / Multi- Zone Error Rate Low This is the total number of errors in writing sectors. 20 Soft Read Error Low 1 Rate This is the number of read/write head off-track errors. If the value is not zero, make a backup. 20 Data Address 2 Mark Errors Low This is the number of data address mark errors. This could also be a different, manufacturer-specific attribute. 20 Run Out Cancel Low 3 This is the number of ECC (Error Correction Code) errors. 20 Soft ECC 4 Correction Low This is the number of errors corrected by software ECC (Error Correction Code). NSA-220 Plus User's Guide 235