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Old 09-05-2017, 01:24 AM   #1
3cxmostar
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how to save data from RAID


Both RAID 1 disks have physical damage. How to check the correctness and the possibility of saving data ? Acronis true image , maybe ?

Last edited by 3cxmostar; 09-05-2017 at 07:26 AM.
 
Old 09-05-2017, 06:50 AM   #2
jlinkels
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You have to elaborate on what kind of RAID and what your problem is. Question formed like this belong in Google. LQ is not Google.

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Old 09-05-2017, 07:05 AM   #3
TB0ne
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Quote:
Originally Posted by 3cxmostar View Post
Which is a good tool for saving data from RAID fields? Acronis maybe ?
As said, we have no idea what you're talking about. "Saving data from RAID fields"?? RAID doesn't have 'fields'....if you're talking about just making a backup, then there are LOTS of tools, and they don't care if you're using RAID, LVM, or just a single disk.
 
Old 09-05-2017, 10:43 AM   #4
suicidaleggroll
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RAID 1 is just a mirror, you should be able to pull data from either drive like you would with a normal, non-RAID drive. Will either of them mount or is the partition table/filesystem beyond repair? I would start by doing dd dumps of both drives to a clean location, and then start your recovery process on the dd dump. Maybe testdisk or photorec could help.
 
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Old 09-05-2017, 11:15 AM   #5
TB0ne
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Quote:
Originally Posted by 3cxmostar View Post
Both RAID 1 disks have physical damage. How to check the correctness and the possibility of saving data ? Acronis true image , maybe ?
Don't edit your original posts...this only makes it confusing for folks to follow later.

And it's HIGHLY unlikely that both disks have damage at the same time...that's exactly the reason you use RAID1 to start with. Break the mirror, and see if you can access the files from one disk at a time. If not, then a backup tool (acronis/dd/whatever) isn't of much use. Those things are used to read data and make backups. If the disks can't be read...your ONLY option is something like photorec, but even then it may not work.
 
Old 09-05-2017, 12:55 PM   #6
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Hi and welcome to LQ. By "physical" on both, do you mean: external damage, like flood/explosion (vs internal to drive)?

Yes, it would help greatly to post relevant status info/details (using CODE tags: see BBcode link at bottm of page or # icon, or termbin.com, or, as a last-resort, use GoAdvanced, to attach a photo)

Also some gentle/friendly advice in general: while it may sometimes be useful to add info to a prior post,
it's never a good idea to hide / cover-up things!!! ("honesty is the best policy") And like the quote in #3,
things on the www tend to be recorded anyway. So, it would have best to just append info, like a p.s.
(ideally with time=when appended-below, and maybe a why)

Let us know more specific details, and progress. (I see, from clicking profile on username, that you came back after #3, so you seem to have a sincere investment in working on this; best wishes!)
 
Old 09-05-2017, 02:11 PM   #7
rknichols
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RAID 1 is just a mirror. If there are defects in both devices, you should be able to use ddrescue to recover as much as it can from one device in a reasonable time. Then re-run ddrescue with the other source device but with the same target and continuing with the same log file. ddrescue will then try to read from the second device any as yet unrecovered blocks. Unless the same blocks are in error in both devices, you should ge a clean copy.
 
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Old 09-05-2017, 04:33 PM   #8
jefro
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Might see if testdisk can recover data before you get too far.
 
  


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