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Maxtor Smart Error: Reallocated Sectors

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I am currently on my third Maxtor 6Y250M0 drive (250 GB, serial ATA) which I bought as a backup drive (internal) for my Mac G5. Every one of these drives has been fine when installed, and then over a period of a few weeks the "reallocated sectors" attribute in the SMART test has gradually gone down, until the SMART test starts failing because the attribute value is below the minimum threshold (of 63.) The value will eventually go down to 1.

I have exchanged the drive with Maxtor twice (thus, I'm on my third drive) and every drive has exhibited the same problem within a few weeks. Other than the SMART failure, which is reported by a utility that runs periodically, the drive appears to function, but I assume that problems will eventually develop if there are no more sectors available to be reallocated.

Has anyone ever heard of a problem like this? It seems so unlikely that three separate drives could exhibit the same problem. But the SMART test is completely internal to the drive - as far as I know, there's nothing my system is doing which could cause these problems. Any ideas?

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what is the raw value for reallocated sectors?

what is the temperature that the drive runs at at idle? load?

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Use Maxtor's powermax.exe utility to run the factory re-certification test and format. It may take half a night - that's 250GB you got there - but the results may tell you more.

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what is the raw value for reallocated sectors?

what is the temperature that the drive runs at at idle? load?

I have a 7Y250M0,

When I recently took a look at the SMART value of Reallocated Sector Count, it currently has a value of 193, where the threshold is 63. The RAW Value is 612

That probably means that currently 612 sectors are reassigned (?)

Is there any document or knowledge base, where I can lookup how many spare sectors are availible for this model ?

I dont think, that I will get the Drive replaced only because of this, but If I would know how many spare sectors are availible, I would feel safer, if for example those 612 are only a 10th of the maximum.

Thanks for any information.

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If you're on your third drive then I'd have to think you've got something else going on, either with power or cooling that is causing premature failure. Last time I opened a G4 and G5, their expansion bays for hard drives were terribly cooled (if you can call it that). What are the other the smart values for temperature and such?

Chris

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If you're on your third drive then I'd have to think you've got something else going on, either with power or cooling that is causing premature failure.  Last time I opened a G4 and G5, their expansion bays for hard drives were terribly cooled (if you can call it that).  What are the other the smart values for temperature and such?

Chris

Even if I am not the same person as the original topic starter, I am at the third drive.

And I do think, this has probably something to do with the cooling of the Drives.

When the Machine ( G5 dual ) was brand new, I ordered an additional backup Drive to make shure, my data is safe.

After installing that, a few days later the first disk died slowly and had to be exchanged.

The next disk died within for weeks.

I now relocated the Temp sensor and glued it to one of the disks surface. Since then, temperature has been not in the 60 deg. ( Celsius ) but in the 40 deg. range.

The disk whith the relocated sectors is the one I ordered for backup purposes - which was for some time in a very hot environment.

I am not shure if there is a relation between the temp of the disks and the death, there is a story about these disks, that maxtor sold a bunch of those disks to dell an others, all of them partly defective. Maybe apple has bought some of them too.

------

Detailed smart Values:

=== START OF INFORMATION SECTION ===
Device Model:     Maxtor 7Y250M0
Serial Number:    Y61F3NZE
Firmware Version: YAR51EW0
User Capacity:    251,000,193,024 bytes
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   7
ATA Standard is:  ATA/ATAPI-7 T13 1532D revision 0
Local Time is:    Tue Nov 23 21:50:55 2004 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:  (0x80) Offline data collection activity
                                       was never started.
                                       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:                 ( 363) seconds.
Offline data collection
capabilities:                    (0x5b) SMART execute Offline immediate.
                                       Auto Offline data collection on/off support.
                                       Suspend Offline collection upon new
                                       command.
                                       Offline surface scan supported.
                                       Self-test supported.
                                       No 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.
                                       No General Purpose Logging support.
Short self-test routine 
recommended polling time:        (   2) minutes.
Extended self-test routine
recommended polling time:        ( 107) minutes.

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
 3 Spin_Up_Time            0x0027   183   173   063    Pre-fail  Always       -       20449
 4 Start_Stop_Count        0x0032   253   253   000    Old_age   Always       -       521
 5 Reallocated_Sector_Ct   0x0033   193   193   063    Pre-fail  Always       -       612
 6 Read_Channel_Margin     0x0001   253   253   100    Pre-fail  Offline      -       0
 7 Seek_Error_Rate         0x000a   253   252   000    Old_age   Always       -       0
 8 Seek_Time_Performance   0x0027   252   250   187    Pre-fail  Always       -       45354
 9 Power_On_Minutes        0x0032   230   230   000    Old_age   Always       -       325h+31m
10 Spin_Retry_Count        0x002b   253   252   157    Pre-fail  Always       -       0
11 Calibration_Retry_Count 0x002b   253   252   223    Pre-fail  Always       -       0
12 Power_Cycle_Count       0x0032   253   253   000    Old_age   Always       -       146
192 Power-Off_Retract_Count 0x0032   253   253   000    Old_age   Always       -       0
193 Load_Cycle_Count        0x0032   253   253   000    Old_age   Always       -       0
194 Temperature_Celsius     0x0032   253   253   000    Old_age   Always       -       35
195 Hardware_ECC_Recovered  0x000a   253   252   000    Old_age   Always       -       4677
196 Reallocated_Event_Count 0x0008   253   253   000    Old_age   Offline      -       0
197 Current_Pending_Sector  0x0008   253   253   000    Old_age   Offline      -       0
198 Offline_Uncorrectable   0x0008   253   253   000    Old_age   Offline      -       0
199 UDMA_CRC_Error_Count    0x0008   199   199   000    Old_age   Offline      -       0
200 Multi_Zone_Error_Rate   0x000a   253   252   000    Old_age   Always       -       0
201 Soft_Read_Error_Rate    0x000a   253   243   000    Old_age   Always       -       45
202 TA_Increase_Count       0x000a   253   252   000    Old_age   Always       -       0
203 Run_Out_Cancel          0x000b   253   252   180    Pre-fail  Always       -       12
204 Shock_Count_Write_Opern 0x000a   253   252   000    Old_age   Always       -       0
205 Shock_Rate_Write_Opern  0x000a   253   252   000    Old_age   Always       -       0
207 Spin_High_Current       0x002a   253   252   000    Old_age   Always       -       0
208 Spin_Buzz               0x002a   253   252   000    Old_age   Always       -       0
209 Offline_Seek_Performnce 0x0024   185   185   000    Old_age   Offline      -       0
99 Unknown_Attribute       0x0004   253   253   000    Old_age   Offline      -       0
100 Unknown_Attribute       0x0004   253   253   000    Old_age   Offline      -       0
101 Unknown_Attribute       0x0004   253   253   000    Old_age   Offline      -       0

SMART Error Log Version: 1
Warning: ATA error count 6 inconsistent with error log pointer 5

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: 5210 hours (217 days + 2 hours)
 When the command that caused the error occurred, the device was in an unknown state.

 After command completion occurred, registers were:
 ER ST SC SN CL CH DH
 -- -- -- -- -- -- --
 10 51 6e 40 a0 e7 40  Error: IDNF 110 sectors at LBA = 0x00e7a040 = 15179840

 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 80 40 a0 e7 40 00      00:08:13.216  READ DMA EXT
 35 00 06 a8 c4 fe 40 00      00:08:13.184  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:11.632  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:11.600  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:08.256  READ DMA EXT

Error 5 occurred at disk power-on lifetime: 5210 hours (217 days + 2 hours)
 When the command that caused the error occurred, the device was in an unknown state.

 After command completion occurred, registers were:
 ER ST SC SN CL CH DH
 -- -- -- -- -- -- --
 10 51 6e 40 a0 e7 40  Error: IDNF 110 sectors at LBA = 0x00e7a040 = 15179840

 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 80 40 a0 e7 40 00      00:08:11.632  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:11.600  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:08.256  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:08.224  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:06.240  READ DMA EXT

Error 4 occurred at disk power-on lifetime: 5210 hours (217 days + 2 hours)
 When the command that caused the error occurred, the device was in an unknown state.

 After command completion occurred, registers were:
 ER ST SC SN CL CH DH
 -- -- -- -- -- -- --
 10 51 6e 40 a0 e7 40  Error: IDNF 110 sectors at LBA = 0x00e7a040 = 15179840

 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 80 40 a0 e7 40 00      00:08:08.256  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:08.224  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:06.240  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:06.224  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:02.832  READ DMA EXT

Error 3 occurred at disk power-on lifetime: 5210 hours (217 days + 2 hours)
 When the command that caused the error occurred, the device was in an unknown state.

 After command completion occurred, registers were:
 ER ST SC SN CL CH DH
 -- -- -- -- -- -- --
 10 51 6f 40 a0 e7 40  Error: IDNF 111 sectors at LBA = 0x00e7a040 = 15179840

 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 80 40 a0 e7 40 00      00:08:06.240  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:06.224  WRITE DMA EXT
 25 00 80 40 a0 e7 40 00      00:08:02.832  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:02.832  WRITE DMA EXT
 25 00 80 c0 9f e7 40 00      00:08:02.816  READ DMA EXT

Error 2 occurred at disk power-on lifetime: 5210 hours (217 days + 2 hours)
 When the command that caused the error occurred, the device was in an unknown state.

 After command completion occurred, registers were:
 ER ST SC SN CL CH DH
 -- -- -- -- -- -- --
 10 51 69 40 a0 e7 40  Error: IDNF 105 sectors at LBA = 0x00e7a040 = 15179840

 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 80 40 a0 e7 40 00      00:08:02.832  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:02.832  WRITE DMA EXT
 25 00 80 c0 9f e7 40 00      00:08:02.816  READ DMA EXT
 35 00 05 a8 c4 fe 40 00      00:08:02.816  WRITE DMA EXT
 25 00 80 40 9f e7 40 00      00:08:02.736  READ DMA EXT

SMART Self-test log structure revision number 1
Num  Test_Description    Status                  Remaining  LifeTime(hours)  LBA_of_first_error
# 1  Extended offline    Completed without error       00%      7468         -
# 2  Short offline       Completed without error       00%      7465         -

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

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Apparently it's been a while since the errors occurred. Reading here that Maxtors tend to die an untimely death when running hot but are not that cool to begin with (but then, which 3-platter 7200 rpm FDB disk is?), it seems sensible to suspect the heat. Hundreds of reallocated sectors normally mean that the drive is virtually dead. However, given that a recent self test indicated no errors it may be more alive than one would think (indicating heat-induced temporary errors instead of real media defects) - still, I don't know whether I'd really trust it. If you don't want to take any chances, RMA it if possible.

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tip for Maxtor online RMA: if you RMA a Maxtor drive that has failed you need an error code from the maxtor software.. which I believe requires windows to be installed to a floppy then booted to DOS.

If you RMA a drive because it is noisey you do not need an error code.

;-)

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