Verify your HDD capabilities for S.M.A.R.T, APM and AAC via the Diagnostic: Information page, ataidle Tab.
Examples of Advanced Hard Drive capabilities:
List of Advanced ATA capabilities on all ATA disk: Results for ada0: Device Info: Model: FUJITSU MPF3102AT Serial: 31277991 Firmware Rev: 1402 ATA revision: ATA-5 Geometry: 16383 cyls, 16 heads, 63 spt Capacity: 9GB SMART Supported: yes SMART Enabled: yes APM Supported: yes APM Enabled: no AAC Supported: yes AAC Enabled: no Note: AAC = AutoAcoustic APM = Advanced Power Management SMART = Self-Monitoring, Analysis and Reporting Technology Results for ada2: Device Info: Model: SAMSUNG SP2014N Serial: S088J1RY906273 Firmware Rev: VC100-33 ATA revision: ATA-7 Geometry: 16383 cyls, 16 heads, 63 spt Capacity: 127GB SMART Supported: yes SMART Enabled: yes APM Supported: no AAC Supported: yes AAC Enabled: no Note: AAC = AutoAcoustic APM = Advanced Power Management SMART = Self-Monitoring, Analysis and Reporting Technology
From this you can see that on ada0, there is no value in setting APM or AAC for this drive as it is not supported. Similarly on ada2, APM is not supported, but AAC is support, but not enabled.
SMART is enabled on a system-wide basis via the System:Advanced page by checking the Enable the S.M.A.R.T daemon option and clicking the Save button.
S.M.A.R.T. is an attempt to predict imminent drive failure by monitoring selected drive performance and calibration characteristics. Each monitored characteristic (Attribute) is used to calculate an Attribute Value. Attribute Values range from 1 to 253 with 1 being worst case, 253 being best case, and 100 being nominal.
For WD drives, the normalized attribute value will range from 1 to 100 or 1 to 200, depending on the attribute. Error rate, total spin ups, spin up retries and calibration retries attributes are implemented as during normal operation (“on-line”); whereas, Multi-zone Error Rate test is performed “off-line”. This test performs a read-verify-all operation and calculates an error rate. These Attributes are updated and stored on the drive in the reserved area of the disk. Also stored on the drive is a set of Attribute Thresholds that correspond to the calculated Attribute Values. An impending degrading or faulty condition is indicated when the calculated Attribute Value becomes less than or equal to its corresponding Attribute Threshold value.
The drive periodically saves all data associated with the S.M.A.R.T. feature. The data is written to the reserved area of the disk after certain time of inactivity by the host. The save of the data is performed in the background and will not cause a decrease in performance.
Below examples of Diagnostics > Information > S.M.A.R.T.
=== START OF INFORMATION SECTION === Model Family: Western Digital Red (AF) Device Model: WDC WD30EFRX-68AX9N0 Serial Number: WD-WMC1T0990732 LU WWN Device Id: 5 0014ee 6ad9200d8 Firmware Version: 80.00A80 User Capacity: 3,000,592,982,016 bytes [3.00 TB] Sector Sizes: 512 bytes logical, 4096 bytes physical Device is: In smartctl database [for details use: -P show] ATA Version is: ACS-2 (minor revision not indicated) SATA Version is: SATA 3.0, 6.0 Gb/s (current: 3.0 Gb/s) Local Time is: Mon Nov 26 04:10:27 2012 CET SMART support is: Available - device has SMART capability. SMART support is: Enabled === START OF READ SMART DATA SECTION === SMART overall-health self-assessment test result: PASSED General SMART Values: Offline data collection status: (0x00) Offline data collection activity was never started. Auto Offline Data Collection: Disabled. Self-test execution status: ( 0) The previous self-test routine completed without error or no self-test has ever been run. Total time to complete Offline data collection: (38160) seconds. Offline data collection capabilities: (0x7b) SMART execute Offline immediate. Auto Offline data collection on/off support. Suspend Offline collection upon new command. Offline surface scan supported. Self-test supported. Conveyance Self-test supported. Selective Self-test supported. SMART capabilities: (0x0003) Saves SMART data before entering power-saving mode. Supports SMART auto save timer. Error logging capability: (0x01) Error logging supported. General Purpose Logging supported. Short self-test routine recommended polling time: ( 2) minutes. Extended self-test routine recommended polling time: ( 383) minutes. Conveyance self-test routine recommended polling time: ( 5) minutes. SCT capabilities: (0x70bd) SCT Status supported. SCT Error Recovery Control supported. SCT Feature Control supported. SCT Data Table supported. SMART Attributes Data Structure revision number: 16 Vendor Specific SMART Attributes with Thresholds: ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0 3 Spin_Up_Time 0x0027 100 253 021 Pre-fail Always - 0 4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 4 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0 9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 35 10 Spin_Retry_Count 0x0032 100 253 000 Old_age Always - 0 11 Calibration_Retry_Count 0x0032 100 253 000 Old_age Always - 0 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 4 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 3 193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 0 194 Temperature_Celsius 0x0022 110 107 000 Old_age Always - 40 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0 198 Offline_Uncorrectable 0x0030 100 253 000 Old_age Offline - 0 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0 200 Multi_Zone_Error_Rate 0x0008 100 253 000 Old_age Offline - 0 SMART Error Log Version: 1 No Errors Logged SMART Self-test log structure revision number 1 Num Test_Description Status Remaining LifeTime(hours) LBA_of_first_error # 1 Conveyance offline Completed without error 00% 0 - SMART Selective self-test log data structure revision number 1 SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS 1 0 0 Not_testing 2 0 0 Not_testing 3 0 0 Not_testing 4 0 0 Not_testing 5 0 0 Not_testing Selective self-test flags (0x0): After scanning selected spans, do NOT read-scan remainder of disk. If Selective self-test is pending on power-up, resume after 0 minute delay.
Each SMART attribute indicates a certain characteristic of the drive and has its own value derived from a special normalization algorithm and formula. The attributes listed below are specific to WD drives. Other drive manufacturers may have their own attribute definition.
RAW Read Error Rate: This attribute indicates the average rate of read error retries.
Spin Up Time: This attribute indicates the average spin up time, which describes amount of time it took to spin the platters up to their rated rotation speed.
Start/Stop Count: This attribute indicates the amount of drive's start/stop cycles.
Reallocated Sector Count: The attribute indicates the amount of bad sectors relocated to a spare area.
Seek Error Rate: This attribute indicates the average rate of seek errors.
Power On Hour Count: This attribute indicates how long the drive was working (powered on).
Spin Retry Count: This attribute indicates the number of retry of drive spin up at power up.
Calibration Retry Count: This attribute indicates the number of retry of drive calibration after spin up.
Power Cycle Count: This attribute indicates the number of disk power cycles.
Relocation Event Count: This attribute indicates the number of times recalibration was requested. “
Current Pending Sector Count: This attribute indicates the amount of sectors pending for relocation. Sectors with read or write errors are recorded and await relocations to spare sectors when next write commands are issued.
Off-line Scan Uncorrectable Sector Count: This attribute indicates the number of firmware uncorrectable error sectors detected during the last off-line scan.
UltraDMA CRC Error Rate: UDMA controller performs a CRC error checking on data while transferring between the host and HDD. Each time the error occurs, a retransmission is requested. This attribute indicates the average rate of the CRC errors.
Multi Zone Error Rate: This attribute indicates a rate at which write retries are requested.
GMR Head Amp: This attribute indicates the amplitude of GMR (Giant Magnetoresistive) head.
Temperature: This attribute indicates the temperature for drives equipped with thermal sensor.