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Which Disk to change?


deuxcolors

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Hey y'all!

 

As a gift I was given a brand new 3TB hard drive. It is currently going through pre-clear.

 

I'm debating which drive I want to swap out. I've got a 3TB whose SMART status is showing end of life, or I can swap one of the 2TB drives and gain an additional 1TB in the array.

 

Let me know what you think, I've included the SMART report of the 3TB drive for those curious.

 

Cheers.

 

smartctl 6.5 2016-05-07 r4318 [x86_64-linux-4.4.30-unRAID] (local build)
Copyright (C) 2002-16, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Model Family:     Seagate Barracuda 7200.14 (AF)
Device Model:     ST3000DM001-1CH166
Serial Number:    Z1F4KLNA
LU WWN Device Id: 5 000c50 065eab30a
Firmware Version: CC49
User Capacity:    3,000,592,982,016 bytes [3.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-2, ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Sat Dec 24 18:38:50 2016 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
See vendor-specific Attribute list for marginal Attributes.

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: 		(  575) seconds.
Offline data collection
capabilities: 			 (0x73) SMART execute Offline immediate.
				Auto Offline data collection on/off support.
				Suspend Offline collection upon new
				command.
				No 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: 	 (   1) minutes.
Extended self-test routine
recommended polling time: 	 ( 314) minutes.
Conveyance self-test routine
recommended polling time: 	 (   2) minutes.
SCT capabilities: 	       (0x3085)	SCT Status supported.

SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED  WHEN_FAILED RAW_VALUE
  1 Raw_Read_Error_Rate     0x000f   120   099   006    Pre-fail  Always       -       237615080
  3 Spin_Up_Time            0x0003   092   091   000    Pre-fail  Always       -       0
  4 Start_Stop_Count        0x0032   100   100   020    Old_age   Always       -       109
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always       -       16
  7 Seek_Error_Rate         0x000f   074   060   030    Pre-fail  Always       -       27346366
  9 Power_On_Hours          0x0032   088   088   000    Old_age   Always       -       10776
10 Spin_Retry_Count        0x0013   100   100   097    Pre-fail  Always       -       0
12 Power_Cycle_Count       0x0032   100   100   020    Old_age   Always       -       84
183 Runtime_Bad_Block       0x0032   100   100   000    Old_age   Always       -       0
184 End-to-End_Error        0x0032   100   100   099    Old_age   Always       -       0
187 Reported_Uncorrect      0x0032   094   094   000    Old_age   Always       -       6
188 Command_Timeout         0x0032   100   100   000    Old_age   Always       -       0 0 0
189 High_Fly_Writes         0x003a   031   031   000    Old_age   Always       -       69
190 Airflow_Temperature_Cel 0x0022   066   037   045    Old_age   Always   In_the_past 34 (255 255 40 24 0)
191 G-Sense_Error_Rate      0x0032   100   100   000    Old_age   Always       -       0
192 Power-Off_Retract_Count 0x0032   100   100   000    Old_age   Always       -       61
193 Load_Cycle_Count        0x0032   070   070   000    Old_age   Always       -       61351
194 Temperature_Celsius     0x0022   034   063   000    Old_age   Always       -       34 (0 20 0 0 0)
197 Current_Pending_Sector  0x0012   100   100   000    Old_age   Always       -       0
198 Offline_Uncorrectable   0x0010   100   100   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x003e   200   200   000    Old_age   Always       -       0
240 Head_Flying_Hours       0x0000   100   253   000    Old_age   Offline      -       6232h+17m+05.454s
241 Total_LBAs_Written      0x0000   100   253   000    Old_age   Offline      -       293056072034
242 Total_LBAs_Read         0x0000   100   253   000    Old_age   Offline      -       52236754466

SMART Error Log Version: 1
ATA Error Count: 6 (device log contains only the most recent five errors)
CR = Command Register [HEX]
FR = Features Register [HEX]
SC = Sector Count Register [HEX]
SN = Sector Number Register [HEX]
CL = Cylinder Low Register [HEX]
CH = Cylinder High Register [HEX]
DH = Device/Head Register [HEX]
DC = Device Command Register [HEX]
ER = Error register [HEX]
ST = Status register [HEX]
Powered_Up_Time is measured from power on, and printed as
DDd+hh:mm:SS.sss where DD=days, hh=hours, mm=minutes,
SS=sec, and sss=millisec. It "wraps" after 49.710 days.

Error 6 occurred at disk power-on lifetime: 10552 hours (439 days + 16 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 40 ff ff ff ef 00   3d+16:49:56.782  READ DMA EXT
  25 00 40 ff ff ff ef 00   3d+16:49:56.746  READ DMA EXT
  25 00 80 ff ff ff ef 00   3d+16:49:56.642  READ DMA EXT
  25 00 40 ff ff ff ef 00   3d+16:49:56.577  READ DMA EXT
  25 00 60 ff ff ff ef 00   3d+16:49:56.566  READ DMA EXT

Error 5 occurred at disk power-on lifetime: 10552 hours (439 days + 16 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 40 ff ff ff ef 00   3d+16:49:48.651  READ DMA EXT
  25 00 58 ff ff ff ef 00   3d+16:49:48.607  READ DMA EXT
  25 00 58 ff ff ff ef 00   3d+16:49:32.924  READ DMA EXT
  25 00 40 ff ff ff ef 00   3d+16:49:32.918  READ DMA EXT
  35 00 10 ff ff ff ef 00   3d+16:49:32.917  WRITE DMA EXT

Error 4 occurred at disk power-on lifetime: 10501 hours (437 days + 13 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 40 ff ff ff ef 00   1d+13:28:22.558  READ DMA EXT
  25 00 40 ff ff ff ef 00   1d+13:28:22.530  READ DMA EXT
  25 00 20 ff ff ff ef 00   1d+13:28:22.525  READ DMA EXT
  25 00 10 ff ff ff ef 00   1d+13:28:22.523  READ DMA EXT
  25 00 10 ff ff ff ef 00   1d+13:28:22.519  READ DMA EXT

Error 3 occurred at disk power-on lifetime: 10501 hours (437 days + 13 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  25 00 40 ff ff ff ef 00   1d+13:28:12.307  READ DMA EXT
  25 00 40 ff ff ff ef 00   1d+13:28:11.926  READ DMA EXT
  25 00 40 ff ff ff ef 00   1d+13:28:11.896  READ DMA EXT
  25 00 10 ff ff ff ef 00   1d+13:28:11.882  READ DMA EXT
  25 00 10 ff ff ff ef 00   1d+13:28:11.871  READ DMA EXT

Error 2 occurred at disk power-on lifetime: 10479 hours (436 days + 15 hours)
  When the command that caused the error occurred, the device was active or idle.

  After command completion occurred, registers were:
  ER ST SC SN CL CH DH
  -- -- -- -- -- -- --
  40 51 00 ff ff ff 0f  Error: UNC at LBA = 0x0fffffff = 268435455

  Commands leading to the command that caused the error were:
  CR FR SC SN CL CH DH DC   Powered_Up_Time  Command/Feature_Name
  -- -- -- -- -- -- -- --  ----------------  --------------------
  60 00 c0 ff ff ff 4f 00      15:27:05.419  READ FPDMA QUEUED
  60 00 40 ff ff ff 4f 00      15:27:05.419  READ FPDMA QUEUED
  60 00 c0 ff ff ff 4f 00      15:27:01.412  READ FPDMA QUEUED
  60 00 40 ff ff ff 4f 00      15:27:01.412  READ FPDMA QUEUED
  60 00 c0 ff ff ff 4f 00      15:27:00.855  READ FPDMA QUEUED

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Short offline       Completed without error       00%      4444         -
# 2  Short offline       Completed without error       00%      3042         -
# 3  Short offline       Completed without error       00%      2322         -
# 4  Short offline       Completed without error       00%      1588         -
# 5  Short offline       Completed without error       00%       841         -

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.

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Agree => that's a fairly low # of hours, but the error history clearly shows the drive is deteriorating.  No reason to take a chance with it.  On the other hand, it depends on how badly you need additional space in the array => if you really need the extra 1TB you could replace one of the 2TB drives; and then look for a good sale on 3TB units to buy another one and replace the 3TB drive you asked about.  It doesn't have any pending sectors; and only a few reallocated sectors -- so it IS still "good" to some extent => but I would NOT use it for much longer.

 

The best approach is to replace the 3TB drive; and THEN buy another drive to add more space in the array.

 

 

 

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