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83

Ok - something was bugging me about your issue, so I fired up a VM to dive into the behavior that should be expected. I'll get to what was bugging me in a minute; first let me say this: Back up these drives before attempting anything!! You may have already done damage beyond what the resync did; can you clarify what you meant when you said: Per ...


75

I almost cringe to do this, but if you're serious about recovering your data, and you don't have backups, you'll need a higher-end data recovery service. Watch out for fly-by-nights shops that will be peddling/scamming in your area, and go with an actual top-tier data recovery service. (And be prepared to pay $$$$ for it.) Here's a list of what to look at: ...


42

There are already many companies providing services for this, for example 24HourData (their site has a list of drives they support). While you figure out your next steps keep these things in mind (from Top Tips for Liquid Damaged Data Storage Devices) Do not try to power on a flood damaged hard drive bad things happen to good hard drives when this ...


35

You have a double disk failure. This means your data is gone, and you will have to restore from a backup. This is why we aren't supposed to use raid 5 on large disks. You want to set up your raid so you always have the ability to withstand two disk failures, especially with large slow disks.


35

Your options are: Restoring from backups. You do have backups, don't you? RAID is not a backup. Professional data recovery It's possible, though very expensive and not guaranteed, that a professional recovery service will be able to recover your data. Accepting your data loss and learning from the experience. As noted in the comments, large SATA ...


21

http://www.storagesearch.com/disklabs-art3-floods.html Do NOT attempt to recover the data yourself. This will do more damage to your data and makes it more difficult to recover when it eventually gets to a data recovery specialist. When hard disk drives get wet, the 'heads' can get stuck to the platters. When the hard drive is powered ...


16

I know @HopelessN00b already mentioned this, and I'm not affiliated with them, but try this: Kroll Ontrack From what I can tell, they handle some of the most difficult data recovery cases, including server, RAID, and forensic data recovery. Given that this is one of the leading data recovery companies, expect to pay dearly for their services. More ...


16

The problem was that the new motherboard's BIOS created a host protected area (HPA) on some of the drives, a small section used by OEMs for system recovery purposes, usually located at the end of the harddrive. ZFS maintains 4 labels with partition meta information and the HPA prevents ZFS from seeing the upper two. Solution: Boot Linux, use hdparm to ...


15

Ha - my (un)favorite question I get asked (as I wrote DBCC CHECKDB). Here you go: There's only one time when you should be trying to work out how long a CHECKDB is going to take - when you're planning your regular database maintenance. If you're faced with a corrupt (or suspected corrupt) database and you're only just starting to think about how long a ...


13

After you accepted a bad answer, I am really sorry for my heretic opinion (which saved such arrays multiple times already). Your second failed disk has probably a minor problem, maybe a block failure. This is the cause, why the bad sync tool of your bad raid5 firmware crashed on it. You could easily make a sector-level copy with a lowlevel disk cloning ...


10

If you've lost two drives then you've lost your data. The only recourse is to restore from backup if one exists or, as you stated, send the drives off to a data recovery company to try and recover the data.


10

Old NeXT hardware. SWOON! Getting a SCSI2 -> SCSI 1 adapter should be trivial. There were both internal and external varieties. Google is your friend. For some reason I thought the "newer" slabs should be SCSI2 but it's been a long time. You still have to terminate the scsi chain. Keep to addresses 0-7. Further just Googling for "scsi-2 pci card" comes up ...


10

It depends on how the drive failed. 72GB 10k disks haven't been manufactured for years, so I'd suspect that your disks are at least 6 years old... possibly 9 years... You may have a mechanical problem with the disk. The server you're talking about is an HP ProLiant DL360 G5. They were sold from 2005-2008. Running RAID 0 is a calculated risk. Your data was ...


9

Is it possible for each platter in a multi-platter drive to be separated, cleaned, imaged, and merged into a new virtual drive for data recovery? As you would have read in other articles, the answer to this question is "yes". What you would not have read yet is that it is not an unconditional "yes". Data recovery companies would do what is called a ...


9

The solution you want (and this should work) is to run mysql_install_db as root. or dpkg-reconfigure mysql if you're a deb/ubu user. Manpage description: mysql_install_db initializes the MySQL data directory and creates the system tables that it contains, if they do not exist.


9

The software RAID solution is Windows itself: SFS refers to a "dynamic disk" in Windows 2000 or later, and software RAID volumes in Windows must be built on dynamic disks. What I would do: Capture offline images of all drives before attempting to boot, to ensure that we do not make anything worse than it already is. Put the bootable NTFS drive on the ...


9

Try this tutorial Basically you can use the commandline tool ext3grep to search through sections of the filesystem. I have not tried this myself YMMV.


8

How valuable is the data? If your business depends on it, disconnect it and call a professional recovery service. If it's not so valuable, this is a pretty good summary of steps you can take yourself. It includes the controller board changing idea Dentrasi mentioned and also everyone's favourite, the freezer trick.


8

All my data in this 6 years is gone and they will just extend the hosting expired date to another 90 days That is very generous of them. Seriously. Is there any other way to retrieve the data from the crashed harddisk? Get the disc, send it to a recovery lab. Cost is some US$ PER GIGABYTE OF DISC SIZE. Are you willing to pay that? See: All ...


7

F2 is typically the right option to choose... Otherwise the ESXi server would not have booted. My concern is what happened leading up to this incident... Did you receive any errors? Any indicators on the hard drive LEDs? Typically, an HP server's disks won't just crap-out on you. Considering you're using 750GB disks in RAID5, the chances are that the ...


7

Send 'em to Kroll Ontrack (or another professional data recovery company). Your restore efforts are much more likely to further damage the tapes than doing anything productive.


7

Look at the /etc/rc?.d directories. You will find symlinks in those that point to the scripts that were in /etc/init.d. You will know what startup scripts you will need to restore to /etc/init.d. So, something like: $ ls -l /etc/rc?.d and you will see something like: /etc/rc2.d: total 4 -rw-r--r-- 1 root root 556 2009-01-23 15:01 README lrwxrwxrwx 1 ...


7

When you recover a drive, it is always better to make a copy in an image file (with dd for example). I understand that in your case, 500GB can be difficult. But it avoids that you irreversibly damage your data using any tool you find on the internet, particularly if you have never used it and if you don't know if you can trust it. Then, have a look at ...


7

I see two options in your future. Call PSS and open a ticket. It'll take a while to get anywhere with them. Call SQLskills (Paul to be specific) and see what he can do. I know that Paul has successfully hacked a database back to life using a hex editor before. Paul isn't cheap, but he'll get the job done. Good luck.


7

First and foremost, boot off a live CD or recovery disk and back up your data. You may want to include system configurations from /etc, too. You can try doing a reinstall over what you have, leaving your partitions you want to keep untouched. As long as you weren't keeping your good data in any system partitions (and let's hope not under /usr), you should ...


6

If you still have the current log file it may be possible to recovery the data using a 3rd party tool. UPDATE statements are fully logged in most cases. Here are a couple of tools to look for: Apex SQL Log by ApexSQL SQL Log Rescue by RedGate If you were running in simple recovery model with no backups, then ran your UPDATE statement, and then took a ...


6

Assuming a battery backed controller, the data should be flushed out to disk and you would be fine. Power supply failure isn't really any different from shutting of the machine unless there was some massive surge. That being said, raid isn't backup, you must have backup. Also, if you can afford it, two power supplies on two different power sources ("A/B" ...


6

Your best bet would be taking the drive to a data recovery company who would, in most cases, be able to remove the disk's platters and extract the remaining data from them. However, this process is quite risky and there are no guarantees that your data can be recovered either partially (as a result of a head crash) or at all (as a result of having taken an ...



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