View topic - 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]

10K/sec recovery rate off WD 1TB 2.5", possible cause?

Page 1 of 1

[ 13 posts ]

Previous topic | Next topic

Author

Message

inflex

Post subject: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 5:16

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

Just performing a data recovery on a WD 1TB 2.5" (WD10JPVT) that came from an enclosure. No noises, no errors (yet!), using GNU ddrescue on Linux to recover [ as per many dozens of drives before this one ], but the thing that struck me as odd is that I'm getting a miserable 10KB/sec, yes, that's incredibly slow and I'm worried the drive will die from read attempts before it gets anywhere.

I've plugged it in to a separate USB3 docking station that I use for most of my recovery processes ( normally see 40~120MB/sec ).

Any ideas what can be the culprit in these situations on the drive causing the tremendous slow down?

The data appears to be legitimate, running photorec on the partial image already pulls out a few valid EXE files that are found on these portable drives by default.

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

inflex

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 7:17

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

Update: some more data...

I noticed that all communications with the drive are quite slow, even hdparm settings such as trying to adjust the look-ahead feature and power-down timeout.

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

labtech

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 7:35

Joined: August 18th, 2010, 17:35
Posts: 3669
Location: Massachusetts, USA

The drive is dying fast... Needs a new set of you know what.

_________________
Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

Top

northwind

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 7:41

Joined: January 28th, 2009, 10:54
Posts: 3547
Location: Greece

Might be some head is dirty/weak slowing down the entire process, or Mod32 could need to be fixed, or...

_________________
http://www.northwind.gr
SandForce SSD Recovery
Ransomware Reverse Engineering - NoMoreRansom! partners

Top

inflex

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 8:53

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

I pulled up the SMART data, also the drive runs quite cool, and it doesn't *sound* like it's doing a lot of repeating seeks. All interactions with the drive are exceedingly slow, even when you're not reading from it (ie, just querying the controller), that's the confusing bit. That said, the SMART seek error rate is absurdly high I suppose

As you say Northwind, could be a weak head

Quote:

root@ctpc001:~# smartctl --all /dev/sdd
smartctl 5.41 2011-06-09 r3365 [i686-linux-3.2.0-40-generic-pae] (local build)
Copyright (C) 2002-11 by Bruce Allen, http://smartmontools.sourceforge.net

=== START OF INFORMATION SECTION ===
Device Model: WDC WD10JPVT-00A1YT0
Serial Number: WD-WX81C62A4510
LU WWN Device Id: 5 0014ee 207461097
Firmware Version: 01.01A01
User Capacity: 1,000,204,886,016 bytes [1.00 TB]
Sector Sizes: 512 bytes logical, 4096 bytes physical
Device is: Not in smartctl database [for details use: -P showall]
ATA Version is: 8
ATA Standard is: Exact ATA specification draft version not indicated
Local Time is: Tue Jun 18 22:52:56 2013 EST
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: (17700) 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: ( 192) minutes.
Conveyance self-test routine
recommended polling time: ( 5) minutes.
SCT capabilities: (0x70b5) 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 - 10
3 Spin_Up_Time 0x0027 130 127 021 Pre-fail Always - 4466
4 Start_Stop_Count 0x0032 100 100 000 Old_age Always - 235
5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
7 Seek_Error_Rate 0x002e 051 051 000 Old_age Always - 3642
9 Power_On_Hours 0x0032 100 100 000 Old_age Always - 400
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 - 145
192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 32
193 Load_Cycle_Count 0x0032 200 200 000 Old_age Always - 1974
194 Temperature_Celsius 0x0022 116 108 000 Old_age Always - 31
196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 3
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.

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

labtech

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 13:25

Joined: August 18th, 2010, 17:35
Posts: 3669
Location: Massachusetts, USA

Though I have not yet seen mod32 issue on this model, Northwind has a good point, could be a factor as well.

_________________
Hard Disk Drive (HDD), Solid State Drive (SSD, SATA, NVMe, etc), USB Flash Drive and RAID Data Recovery Specialist in Massachusetts

Top

inflex

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 18th, 2013, 19:25

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

Thanks folks. I think time time around I'm just going to have to accept that it's beyond the recovery limits of my software tools ( ddrescue, photorec etc ) and forward the client on to a clean room service provider.

Anyone know of a reputable provider in Australia?

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

northwind

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 19th, 2013, 2:58

Joined: January 28th, 2009, 10:54
Posts: 3547
Location: Greece

Yes,

www.datarecovery.com.au

ask for Eric.

_________________
http://www.northwind.gr
SandForce SSD Recovery
Ransomware Reverse Engineering - NoMoreRansom! partners

Top

inflex

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 19th, 2013, 5:51

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

Thank you Northwind, a pleasure to have your presence here and providing such assistance.

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

northwind

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 20th, 2013, 4:10

Joined: January 28th, 2009, 10:54
Posts: 3547
Location: Greece

You're most welcome :-)

_________________
http://www.northwind.gr
SandForce SSD Recovery
Ransomware Reverse Engineering - NoMoreRansom! partners

Top

inflex

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 21st, 2013, 0:35

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

UPDATE: While I'm waiting to hear back from Eric as per Northwind's suggestion, I was going over the logging data I got from the ddrescue process, and there was a bit of a quirk that I noticed;

The initially start at about 10KB/sec, then after two or three reads, then the next 2~4MB of data would transfer at about ~500K/sec, before falling back to the 10~15KB/sec rate. I can repeat this by cycling ddrescue (terminating the process and restarting). It's not drive sector dependent, it is influenced by the drive read-ahead settings. Initially I thought it was just a buffering / timing miscalculation, but the trouble is that the 4MB of data transferred would occur in a time period quicker than that average overall. It could still just be an artifact of the multiple levels of buffering between the read heads and the ddrescue app, though it does make me ponder.

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

inflex

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 25th, 2013, 2:30

Joined: May 11th, 2013, 21:08
Posts: 100
Location: Australia

While I've been discussing matters with Eric, I had the hard-drive on some testing, and it certainly does come up looking very much like a head-failure.

Just thought I'd show what it looks like in ddrescue;

Attachments:

head-failure.png [ 115.92 KiB | Viewed 8222 times ]

_________________
You have a backup...right? | Tech Repairs on YouTube

Top

louis

Post subject: Re: 10K/sec recovery rate off WD 1TB 2.5", possible cause?

Posted: June 25th, 2013, 18:31

Joined: August 22nd, 2011, 15:43
Posts: 209
Location: Romania

bad head, adaptives, translator etc.

Top

Page 1 of 1

[ 13 posts ]

Main » Forums home » Conventional hard drives

All times are UTC - 5 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 85 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum