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Rajahal

High LCC count on WDEARS drives

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Heres my info

 

Parity, power on 2642.  Load cycle count 5855

Disk 1, power on 2646.  Load cycle. 7448

Disk 2 power on 3479. Load cycle 9216

Disk 3 power on 1791    Load cycle 9539

 

 

I guess nothing wrong?

So am i right when i say, if its not broken dont fix it. And i should leave it as it is and check again in one year?

I would say yes it doesn't appear to be broke so don't fix it.  Wait a while and check again.  I've never touched mine and the only disk I have with high LCCs is an RMA'd EADS drive.  The rest are about the same ratio as what you have 2 or 3 LCC to each power on.

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Ok thx

I was at work so I couldn't post a smart report from one of my EARS:

smartctl 5.40 2010-10-16 r3189 [i486-slackware-linux-gnu] (local build)
Copyright (C) 2002-10 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Model Family:     Western Digital Caviar Green (Adv. Format) family
Device Model:     WDC WD20EARS-00J2GB0
Serial Number:    WD-WCAYY0212019
Firmware Version: 80.00A80
User Capacity:    2,000,398,934,016 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   8
ATA Standard is:  Exact ATA specification draft version not indicated
Local Time is:    Fri Jul 13 18:08:46 2012 CDT
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:  (0x84)	Offline data collection activity
				was suspended by an interrupting command from host.
				Auto Offline Data Collection: Enabled.
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: 		 (40260) 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: 	 ( 255) minutes.
Conveyance self-test routine
recommended polling time: 	 (   5) minutes.
SCT capabilities: 	       (0x3031)	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   163   155   021    Pre-fail  Always       -       8808
  4 Start_Stop_Count        0x0032   098   098   000    Old_age   Always       -       2439
  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   080   080   000    Old_age   Always       -       14811
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       -       215
192 Power-Off_Retract_Count 0x0032   200   200   000    Old_age   Always       -       132
193 Load_Cycle_Count        0x0032   196   196   000    Old_age   Always       -       12635
194 Temperature_Celsius     0x0022   129   103   000    Old_age   Always       -       23
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   200   200   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0032   200   200   000    Old_age   Always       -       0
200 Multi_Zone_Error_Rate   0x0008   200   200   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.

It has actually gone the other way now with LCC's less than power on  hours.  This drive use to have LCC's higher than power on hours.

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If it were me, I would let it go for now, just keep an eye on it.  If it starts to accumulate rapidly, then I would rethink it. 

 

Sent from my SGH-T959 using Tapatalk 2

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Typically the "skyrocketing" llc comes when a intermittent process keeps the drive from idling. The gap is big enough for heads to land, but not long enough to idle. So the heads land and take off literally a 100 times an hour and thousands of times a day. A small change in the value will solve the problem, no need to disable it. While 300 is often used, 30 or 60 will end the skyrocketing.

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