Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [data-recovery]

Reclamation of deleted or otherwise removed/corrupted data (files)

Reclamation of deleted or otherwise removed/corrupted data (files). The level of complexity of such a task varies from simply "Restoring" a file (from a Recycle Bin) to using advanced tools to analyze the filesystem and rebuild previously deleted/corrupted data.

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How to recover outlook emails

It has happened many times in my organization that some people have left in not really good terms. So when you go to check their computers you find that they normally delete their emails, sometimes you can find them in the deleted folder (lol) but…
Nicolas Marengo
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Is there any way to recover files in /usr/local directory on Ubuntu?

We are running Ubuntu server on VPS. Some files were removed accidentally by placing unnecessary space this command: rm -r /usr/local I know, that in most cases this directory is used by packages to place some part of their…
ilya
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Recover deleted rows from SQL Server transaction log file

I need to recover deleted data from an SQL Server 2000 transaction log file. The Log file is 3.3GB. I tried the usual SQL Log Rescue but it keeps crashing with outOfMemory exception. I also tried it on different machines with the same error. I tried…
Saif Khan
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Recover data from RAID 5 with VMFS data store

I own an HP Proliant Gen-6 ML350 server which is not turning on again after a power outage. According to my research it is most likely due to a failue of the power supply backplane or the power supply, alternatively the mainboard, a CPU or a…
RosA
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How can I recover my ZFS pool, which suddenly went offline and reports that it was "last used by another system"?

tl;dr: I am running a FreeBSD 11.2 NAS server with ZFS on a server with 16GB ECC memory. I've discovered that my main pool has disappeared. ZFS can see the pool, but reports fault ZFS-8000-EY and that it cannot import 'tank': pool may be in use…
Kaypro II
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Restore mongoDB by --repair and WiredTiger

We accidentally deleted the directory rm -rf /data/db which was our MongoDB path, and thanks to extundelete, we recovered it and got the directory /data/db. Here are our files in the directory, and the files was generated under MongoDB version…
SoftTimur
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Recover RAID 1 data without controller

Nearly 10 years ago I built a PC for a friend and thought it would be a good idea to use the motherboard's RAID controller to set up a RAID 1 array. Since HDDs have a propensity to die quicker than a motherboard and most people upgrade their…
Craig
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Data recovery for XFS partition

I want to recover data from a XFS partition. It seems that I need to xfs_repair the partition but I am not sure I would lose the data, so I prefer to ask to experts. I run a Virtual Box Linux Mint. Here is what I did: sydney@sydney-VirtualBox ~ $…
Sydney
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Recovering emails from a dead exchange database

We recently had an outage on our DC - one disk out of a 4 disk raid array failed and it ran in degraded mode for about 3 weeks before we were able to replace the disk. By the last day before it got replaced, exchange was running so poorly that for…
Chris O'Kelly
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VERY peculiar permission masks, UIDs, GIDs and file names in Linux

I've just booted to find my software RAID 5 in Ubuntu not mounting. When trying to mount it gave me an NFS error (which was confusing). I ran fsck on /dev/md0 and my screen scrolled with fixes for about an hour. It claimed to be complete, however…
SimonJGreen
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Does tarring up small files into one big tar file before writing them to tape increase the level of data loss when an error occurs?

I've been looking at our backups recently and noticed that the tape throughput is a lot lower when writing lots of small files, so was thinking of tarring those small files up into one big tar file and the writing that to tape instead of the small…
David Gardner
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Recover a lost NTFS partition on the cheap?

I had a workstation running XP. Filesystem was NTFS, single partition over the entire drive. After an attempted XP repair install, suddenly the NTFS filesystem is just gone and the drive is showing up with a single 10Mb FAT32 partition with…
Boden
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Is there a diff/merge utility to compare binary files and synchronize data bit-by-bit in either direction based on differences in binary data?

I have a tricky dilemma. I've got some files on two different destination drives, copied from the same source drive. The source drive had been failing, so I used dd to copy over the data to one destination (with options conv=noerror,sync which fills…
purefusion
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How to salvage a RAID configuration?

A buddy of mine and I are in the process of trying to salvage an old server that hasn't been used for a while, but whose data is critically important. It's an old box with a series of hard drives that, after a long while of arduous testing, were…
user67627
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MySQL data recovery (innoDB) - missing .frm files but intact ibdata

A recent server fiasco left me with a by-all-appearances intact ibdata file but only half of my .frm-containing directories. I've copied all of this to a fresh mysql install, and have successfully recovered the databases which I still had .frm files…
bhaibel
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