NAS Box Recovery

[HDD Spaz]

remember the starting sector!

$2500 - $5000 is a very fair price if you ask me.

[DRNJ]

You also have Parity Length and offset which you can type any number you want in.
Also who says they are using the standard block sizes? Maybe one million combinations?
Trial and error is not going to work. It would be helpful if I understood XFS file system.
This is a scam that Iomega has. The customer deletes a file by mistake and they have to pay Iomega $2,500 to $5,000 to get it back.
Iomega knows what the RAID parameters are and they just won’t give them to me.

[DRNJ]

I got it !
I will sell it to you for only $2,499.99

........OK you can have it for free, the number is 4

[Pupok]

I have a bad news for you DRNJ - deleted files on XFS are not recoverable. even $10k will not help here

As of IOmega "scam" - if you have an experience in RAID recovery, you don't need any vendor's information at all.
It takes up to 5 minutes in average to figure out the config in such simple cases like this one.

XFS standard is open, Linux have the source code for the driver.

[dlethe]

So what ARE the full parameters for the 2TB unit in RAID5? I have one that is heavily damaged that started a rebuild, and kept looping in degraded mode due to multiple bad blocks and then it lost a disk, and well, nasty things happened. Bottom line, I can manually rebuild parity in a range of blocks but since this system is so damaged it is difficult to determine correct stripe size, parity blocks, etc.

Thanks

[granaryloaf]

So what ARE the full parameters for the 2TB unit in RAID5?Thanks

It varies, grab yourself a hex editor and search for contiguous text strings is probably the least technical way of doing it.

These types of array are normally LVM logically striped (grab yourself a Linux distro!), you are creating a RAID 5 from the largest partition. Go to the first sector of the large partition and look for a partition table or boot sector (ASCII XFSB), this can help you to determine the disk order if you do not know it as you just have to follow where this takes you.

Hint - Find XFSB and you will likely find some very useful tables immediately afterwards, these can help with both disk order and stripe size. If you are lucky they will be all that you need.

The last one of these units that I saw (only 2 days ago now) had a 64KB stripe size with reverse symmetric parity rotation.

Yours may not be the same, it is always better to figure out the parameters yourself, one by one, trial and error could take you a long time indeed.

[granaryloaf]

I have a bad news for you DRNJ - deleted files on XFS are not recoverable. even $10k will not help here

What planet are you on? I recover these regularly. You may lose the metadata but the actual file remains, there are also certain scenarios where the metadata and FS information (or some of it) can also be retrieved. In fact there are commercial tools that do just this (although not as well).

for $10K I will happily take it on!

[dlethe]

I broke out the binary editor, and confirmed that the one I have is 64K. It had massive damage due to a partial rebuild that the system kept trying to do continuously for weeks, then a disk failed, and they swapped it out, and, for some reason the array shows it reinitialized. Well, doesn't matter, it is so sick that best I can do is the RAW recovery and get what I can. If file is < 64K and I completely ignore the directory tree then I do get a lot of files.

One funny anecdote. There are tens of thousands of jpgs, .pdfs, and spreadsheets, all written in italian for some company that seems to be in the fashion biz. I put a good sample of them on a website so end-user can assess whether they want to pay for more of my time, or just write the whole thing off.

"What's all this data from an italian company?" Those aren't any of my pictures, etc.. So clearly somebody bought disks that were bought used, and this stupid array doesn't perform a full initialization. In fact, I bet even if it does a rebuild after a drive failure that it looks at xfs info and doesn't rebuild all of the physical blocks.

So has anybody done a recovery and ended up with tens of thousands of recovered files that don't belong there? Also this confirms that the stripe size for RAID5 partition differs.

If customer says to wipe it out then I'll blow it all away and write a test pattern and reconstruct to confirm the config. Looks like the RAID5 has several possible variations.

[cegio71]

Hello,
i have lost the CD Recovery of Iomega StorCenter 150D to recovery my nas something can send me the iso?

Thanks for your kind cooperation
Best regards
Talarico Sergio

[data-medics]

Are you trying to recover the data or just fix the NAS?

[cegio71]

Hello,
i need a recovery cd because don't start and i want to re-install the original system on nas because i have insert new disk.

[cegio71]

The nas reply to ping and Flashing red: StorCenter Pro not ready, busy (formatting drive, resetting to default settings, repairing drive, or powering down) but web interface not work