Частая парковка головки жесткого диска (частые щелчки)

[root@archi_msi adm]# smartctl -a /dev/sda
smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.5-1-ARCH] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, [url=http://www.smartmontools.org]www.smartmontools.org[/url]
=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Scorpio Black (AF)
Device Model:     WDC WD7500BPKT-22PK4T0
Serial Number:    WD-WX91E13MLP11
LU WWN Device Id: 5 0014ee 6ae009485
Firmware Version: 01.01A01
User Capacity:    750 156 374 016 bytes [750 GB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ATA8-ACS (minor revision not indicated)
SATA Version is:  SATA 2.6, 3.0 Gb/s
Local Time is:    Wed Mar  5 20:38:16 2014 MSK
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:                (12600) 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:        ( 125) minutes.
Conveyance self-test routine
recommended polling time:        (   5) minutes.
SCT capabilities:              (0x7035) SCT Status 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   193   187   021    Pre-fail  Always       -       1325
  4 Start_Stop_Count        0x0032   100   100   000    Old_age   Always       -       930
  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   098   098   000    Old_age   Always       -       1692
 10 Spin_Retry_Count        0x0032   100   100   000    Old_age   Always       -       0
 11 Calibration_Retry_Count 0x0032   100   100   000    Old_age   Always       -       0
 12 Power_Cycle_Count       0x0032   100   100   000    Old_age   Always       -       928
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       57
193 Load_Cycle_Count        0x0032   199   199   000    Old_age   Always       -       3023
194 Temperature_Celsius     0x0022   106   090   000    Old_age   Always       -       41
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
No self-tests have been logged.  [To run self-tests, use: smartctl -t]
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.

smartctl 6.2 2013-07-26 r3841 [x86_64-linux-3.13.5-1-ARCH] (local build)
Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
=== START OF OFFLINE IMMEDIATE AND SELF-TEST SECTION ===
Sending command: "Execute SMART Short self-test routine immediately in off-line mode".
Drive command "Execute SMART Short self-test routine immediately in off-line mode" successful.
Testing has begun.
Please wait 2 minutes for test to complete.
Test will complete after Wed Mar  5 21:16:19 2014
Use smartctl -X to abort test.

/dev/sda:
 wdidle3      = 8.0 secs

-J     Get/set  the Western Digital (WD) Green Drive's "idle3" timeout value.  This timeout controls how often
the drive parks its heads and enters a low power consumption state.  The factory default is  eight  (8)
seconds, which is a very poor choice for use with Linux.  Leaving it at the default will result in hun‐
dreds of thousands of head load/unload cycles in a very short period of time.  The drive  mechanism  is
only  rated  for  300,000  to  1,000,000 cycles, so leaving it at the default could result in premature
failure, not to mention the performance impact of the drive often having to wake-up before  doing  rou‐
tine I/O.
WD  supply a WDIDLE3.EXE DOS utility for tweaking this setting, and you should use that program instead
of hdparm if at all possible.  The reverse-engineered implementation in hdparm is not  as  complete  as
the  original  official  program,  even though it does seem to work on at a least a few drives.  A full
power cycle is required for any change in setting to take effect, regardless of which program  is  used
to tweak things.
              
A  setting  of 30 seconds is recommended for Linux use.  Permitted values are from 8 to 12 seconds, and
from 30 to 300 seconds in 30-second increments.  Specify a value of zero (0) to disable  the  WD  idle3
timer completely (NOT RECOMMENDED!).