Scan of a 2 TB HDD is supposed to take more than 9 months!

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Lammy
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Joined: Fri Oct 12, 2012 11:31 pm

Scan of a 2 TB HDD is supposed to take more than 9 months!

Post by Lammy » Fri Oct 12, 2012 11:52 pm

Hello,
I´ve installed the test version of R-Studio (vers. 6.1.152028) to scan a 2 TByte Western Digital HDD. This HDD was installed on an ESATA port at my Synology NAS, when I installed this. I had a copy of (hopefully) all my files on this 2 TByte HDD, but I am not sure, in which format. I think, it´s been EXT4, but might have been NTFS or FAT32 as well...

Next thing I did was deleting the partition after I (thought I) copied all files back to the NAS, to prepare the HDD as a "normal" backup volume. I did not do this for weeks and found out a few days ago, that folders with digital photos (all JPG) are missing (from folder L... to Z...). The HDD should be physically ok.

To try and recover the files, I started a scan in R-Studio. In the options, I chose the file systems mentioned above (EXTx, NTFS, FATx) and file type JPG only. The HDD is connected to an ESATA port to my PC, running Windows 7 Home Premium 64-bit version.

After running over 15 hours now, the scan is not completed to 1% - the time, that´s calculated for the complete scan is 9 months and 9 days! Is there anyone who has an idea, why the scan is so slow (at this moment 4.70 GByte are done of 2,000!). Maybe the physical setting of cylinders, heads, etc. is not correct?

Thanks in advance for any help.

Kind regards
Martin

Alt
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Re: Scan of a 2 TB HDD is supposed to take more than 9 month

Post by Alt » Sat Oct 13, 2012 2:26 am

First things to check is the access speed for the disk. Try to copy some long files from the disk (without interrupting the scan) and see if they are copied fast enough. Don't copy anything TO the disk!

Lammy
Posts: 3
Joined: Fri Oct 12, 2012 11:31 pm

Re: Scan of a 2 TB HDD is supposed to take more than 9 month

Post by Lammy » Sat Oct 13, 2012 9:24 am

Hi,
thank you for the quick answer, it´s for sure a good idea to check the speed, but there´s no partition on the HDD yet, so I can´t copy anything. I thought it might be better not to create another partition on that disk for this might make recovery from the old partitions even more difficult for R-Studio, don´t you think? Maybe I find a software to check drive speed without creating a partition or a volume on the disk... . I´ll try. Any other idea, why the scan is that slow?
Kind regards
Martin

Alt
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Re: Scan of a 2 TB HDD is supposed to take more than 9 month

Post by Alt » Sun Oct 14, 2012 2:49 am

You see, the narrowest bottleneck for scan is data exchange between the system and disk, and R-Studio does that through the OS. You may see that in Task Manager looking at how much R-Studio consumes CPU power. ESATA is surely a fast link but there may be problems with drivers, and the stuff. I can't say more without looking at your system directly.

Lammy
Posts: 3
Joined: Fri Oct 12, 2012 11:31 pm

Re: Scan of a 2 TB HDD is supposed to take more than 9 month

Post by Lammy » Fri Oct 19, 2012 6:58 am

Hi,
thanks, in the meanwhile I found out, that something´s wrong with the HDD as you already asumed. It seems to be physically damaged, so I´ll probably contact a specialist to recover the data.
Kind regards
Martin

Alt
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Re: Scan of a 2 TB HDD is supposed to take more than 9 month

Post by Alt » Fri Oct 19, 2012 8:28 am

Lammy wrote:. It seems to be physically damaged, so I´ll probably contact a specialist to recover the data.
That's indeed a wise decision. When a disk's malfunctioning, there's no room for experiments with "do-it-yourself" recovery.

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