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.

433 questions
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4 answers

All servers flooded by salt water, is it possible to recover data from multi-platter drives?

All of my servers are currently flooded by salt water. 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?
michael
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7 answers

How can I successfully mount an 8-bit SCSI drive on a modern computer?

I have a number of internal 8-bit SCSI-1 drives that I'd like to archive for historical purposes. These are all the old NeXT Cubes and NeXTStations (monochrome and color) that were used by id Software to create DOOM and Quake. I'd like to donate…
Don MacAskill
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6 answers

ZFS on FreeBSD: recovery from data corruption

I have several TBs of very valuable personal data in a zpool which I can not access due to data corruption. The pool was originally set up back in 2009 or so on a FreeBSD 7.2 system running inside a VMWare virtual machine on top of a Ubuntu 8.04…
ssc
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Recover RAID 5 data after created new array instead of re-using

Folks please help - I am a newb with a major headache at hand (perfect storm situation). I have a 3 1tb hdd on my ubuntu 11.04 configured as software raid 5. The data had been copied weekly onto another separate off the computer hard drive until…
Brigadieren
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4 answers

My server room has flooded

We recently went through a hurricane and our server room became flooded. Hooray for insurance. Anyway, I need to save as much data off one of the hard drives as possible. Yes, it was submerged for the better part of two days. Do I need to open…
Critologist
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2 answers

Proper way to deal with corrupt XFS filesystems

I recently had an XFS filesystem become corrupt due to a powerfail. (CentOS 7 system). The system wouldn't boot properly. I booted from a rescue cd and tried xfs_repair, it told me to mount the partition to deal with the log. I mounted the…
Michael Kohne
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8 answers

RAID-5: Two disks failed simultaneously?

We have a Dell PowerEdge T410 server running CentOS, with a RAID-5 array containing 5 Seagate Barracuda 3 TB SATA disks. Yesterday the system crashed (I don't know how exactly and I don't have any logs). Upon booting up into the RAID controller…
Mike Furlender
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2 answers

Server motherboard died and took Intel RAID controller configuration with it. How do I recover the data?

Old server using a S1200BTS Intel mobo died and has been sitting in a closet for several years. I replaced the motherboard and found that it was originally configured using an onboard hardware raid controller. Harddrives are still in their original…
Benjamin Jeffrey
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Restoring data after zfs destroy

On Debian 8.7 I had a zfs pool. (obviously using ZFS on Linux, not Oracle or Solaris zfs) It was needed to extend ZFS pool from mirror on 2 disks to raidz on 4 disks. I did backup (one copy of data - it was my first mistake) I thought that zpool…
Oleg Rudenko
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How to access LVM partitions on OS X?

I need to access ext3 partitions over an LVM logical volume in a SATA HD connected through USB2 to my iMac with OS X 10.6 . Is it possible to see LVM volumes from OS X? How? Disk Utility says that the attached device is unknown and propose to…
drAlberT
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1 answer

How can I recover an ext4 filesystem corrupted after a fsck?

I have an ext4 filesystem on luks over software raid5. The filesystem was operating "just fine" for several years when I was beginning to run out of space. I had a 9T volume on 6x2T drives. I began upgrading to 3T drives by doing the mdadm fail,…
Regan
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3 answers

Database accidentally deleted with a bash script

Edit: a follow-up question: Restore mongoDB by --repair and WiredTiger. My developer committed a huge mistake and we cannot find our Mongo database anywhere in the server. He logged into the server, and saved the following shell under…
SoftTimur
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1 answer

Getting files out of XFS with 64kb block size

I've been on a mission to recover files from one of my 2 perfectly working, non-corrupted, non-encrypted NAS drives that used to be in RAID 1. The NAS was Patriot Javelin S4, which (as I found from my research) uses Promise Fasttrack fake raid…
Max Chernyak
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4 answers

Is it safe to remove the BIN files that are generated by MySQL?

They are taking up too much space: /var/lib/mysql/jiaoyou-slow.log: 53M /var/lib/mysql/mysql-bin.000005: 68M /var/lib/mysql/mysql-bin.000003: 1.1G /var/lib/mysql/mysql-bin.000007: 34M /var/lib/mysql/mysql-bin.000004: 225M
Mask
9
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2 answers

How can RAID deal with inconsistent data?

RAID 1 and RAID 5 (and their brothers 10 and 50) achieve data redundancy respectively through mirroring and through parity checking. This allows a RAID array to still access data when a sector on a disk (or a whole disk) becomes unreadable. RAID 6…
Massimo
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