XL500S
ATA Command Set
2679-701211-A06
RELEASED 10/21/10 (WD CONFIDENTIAL)
31
4.2.2
Supported Attributes
The drive supports the following attributes.
Attributes that use the Pre-Failure/Advisory Bit Set can predict potential future degrading or
faulty conditions. Attributes with the Failure/Advisory Bit Clear are used for informational
purposes only, they do not indicate impending drive failure.
The S.M.A.R.T. data saving process is a background task. After a pre-determined idle period,
the self-monitoring data is automatically saved to the disk.
Attribute
Attribute ID Number
Pre-Failure/Advisory Bit
(Status Flags bit 0)
1
Read Error Rate
1
Pre-Failure
Spin-up Time
3
Pre-Failure
Start/Stop Count
4
Advisory
Re-allocated Sector Count
5
Pre-Failure
Seek Error Rate
7
Pre-Failure
Power-on Hours Count
9
Advisory
Spin-up Retry Count
10
Pre-Failure
Drive Calibration Retry Count
11
Advisory
Drive Power Cycle Count
12
Advisory
Emergency Retract Cycles
192
Advisory
Load/Unload Cycles
193
Advisory
HDA Temperature
2
194
Advisory
Relocation Event Count
196
Advisory
Current Pending Sector Count
197
Advisory
Offline Scan Uncorrectable Sector Count
198
Advisory
Ultra ATA CRC Error Rate
199
Advisory
Multi-zone Error Rate
200
Pre-Failure
1
Status bits are typical but may vary.
2
See “Temperature Reporting” on page 17 for a better mechanism.
