SATA RAID recovery

  • Thread starter Thread starter joe
  • Start date Start date
J

joe

Hi, i have SATA RAID 0 (2x 200GB Maxtor HDD, Intell raid, chipset 865PE,
ICH5R). Few days ago, i give the harddiscs into another computer, but
there was different raid controler and it was unable to pair the
devices. But when i give harddiscs to my computer i am also unable to
pair the devices. The raw data is still there, but it is impossible to
pair the devices together ..... so, i realy dont want to loose 400GB
....... is there any way to correct it?? Or is there any software to
recover the "meta" information on raids (how to pair the devices)? I
have some short configuration row from linux, but i dont exactly know
what that means .... (i forgot which programe generated that information).

isw_dehbhcdgdb_DATA_Raid: 0 796593152 striped 2 256 8:16 0 8:0 0

and this is the disc on raid:
isw_dehbhcdgdb_DATA_Raid6: 0 383696397 linear 252:0 402653223
isw_dehbhcdgdb_DATA_Raid5: 0 402637032 linear 252:0 16128


Thanks for help !
 
Hi, i have SATA RAID 0 (2x 200GB Maxtor HDD, Intell raid, chipset 865PE,
ICH5R). Few days ago, i give the harddiscs into another computer, but
there was different raid controler and it was unable to pair the
devices. But when i give harddiscs to my computer i am also unable to
pair the devices. The raw data is still there, but it is impossible to
pair the devices together ..... so, i realy dont want to loose 400GB
...... is there any way to correct it?? Or is there any software to
recover the "meta" information on raids (how to pair the devices)? I
have some short configuration row from linux, but i dont exactly know
what that means .... (i forgot which programe generated that information).

isw_dehbhcdgdb_DATA_Raid: 0 796593152 striped 2 256 8:16 0 8:0 0

and this is the disc on raid:
isw_dehbhcdgdb_DATA_Raid6: 0 383696397 linear 252:0 402653223
isw_dehbhcdgdb_DATA_Raid5: 0 402637032 linear 252:0 16128

You do not have to loose 400GB. Just recreate RAID volume using BIOS. Put
data back.
 
You do not have to loose 400GB. Just recreate RAID volume using BIOS. Put
data back.

Are you sure about that? This could possibly destroy all/part of
the data on the disks!

What RAID-level are we talking about here?

Arno
 
joe said:
Hi, i have SATA RAID 0 (2x 200GB Maxtor HDD, Intell raid, chipset 865PE,
ICH5R). Few days ago, i give the harddiscs into another computer, but
there was different raid controler and it was unable to pair the
devices. But when i give harddiscs to my computer i am also unable to
pair the devices. The raw data is still there, but it is impossible to
pair the devices together ..... so, i realy dont want to loose 400GB
...... is there any way to correct it?? Or is there any software to
recover the "meta" information on raids (how to pair the devices)? I
have some short configuration row from linux, but i dont exactly know
what that means .... (i forgot which programe generated that information).

isw_dehbhcdgdb_DATA_Raid: 0 796593152 striped 2 256 8:16 0 8:0 0

and this is the disc on raid:
isw_dehbhcdgdb_DATA_Raid6: 0 383696397 linear 252:0 402653223
isw_dehbhcdgdb_DATA_Raid5: 0 402637032 linear 252:0 16128


Thanks for help !

Even if you get it back, will you trust it?

Better to load the backup.
 
You do not have to loose 400GB. Just recreate RAID volume using BIOS.
Put
Are you sure about that? This could possibly destroy all/part of
the data on the disks!

Absolutely, that is why he needs to put data back from his backup. But
physical disks won't be harmed in this process.
 
Absolutely, that is why he needs to put data back from his backup. But
physical disks won't be harmed in this process.

Ah, yes. I think the OP does not have a backup but wanted to make
the RAID-array itself readable again. Of course with backup your
procedure is the way to go.

Arno
 
Absolutely, that is why he needs to put data back from his backup. But
Ah, yes. I think the OP does not have a backup but wanted to make
the RAID-array itself readable again. Of course with backup your
procedure is the way to go.

He was moving RAID disks to another computer (without backup) and still
cared about data on them !?!
That's insane !
 
He was moving RAID disks to another computer (without backup) and still
cared about data on them !?!
That's insane !

Well, yes. I have to agree on that. Or very naive.

Arno
 
If u have fast internet send me images (or drives) an we will get
your data back , if u recreate raid no go , so wach what are
doing
HelpDis
 
If u have fast internet send me images (or drives) an we will get
your data back , if u recreate raid no go , so wach what are
doing
HelpDis
 
Arno Wagner napsal(a):
Well, yes. I have to agree on that. Or very naive.

Arno

"Or very naive." Not to warry. Everything is OK, just you have to learn
how to take care about your HDD. So ... there is no problem to move RAID
disk to another computer. Even there is no problem to delete you RAID
array, then create the wrong one and again create the right one. I have
seen manytimes during the recovery process the warning like: "All your
data will be unrecoverable lost" but i have all of my data back and
everything is OK. You just have to have the "know how", how to repair
the broken raid. It took a while to learn, I hoped you will help me, but
as i can see, the only answer is "Your fool". So ... thanks for
destruktive options .....

JOE
 
"Or very naive." Not to warry. Everything is OK, just you have to learn
how to take care about your HDD. So ... there is no problem to move RAID
disk to another computer. Even there is no problem to delete you RAID
array, then create the wrong one and again create the right one. I have
seen manytimes during the recovery process the warning like: "All your
data will be unrecoverable lost" but i have all of my data back and
everything is OK.

Good for you!
You just have to have the "know how", how to repair
the broken raid. It took a while to learn,

Yes, wasted time is just one aspect of this story. I guess some can afford
that.
But unless you are in data recovery business (and successfully convince
clients to pay big bucks) I see no value in learning this. Because the
procedure you have described carries inherent high data loss risks and
heavily depends on particular hardware. No vendor supports that - this is
the reason for their disclaimer.
I hoped you will help me, but
as i can see, the only answer is "Your fool". So ... thanks for
destruktive options .....

What "destruktive options ....." ?
 
Previously joe said:
Arno Wagner napsal(a):
"Or very naive." Not to warry. Everything is OK, just you have to learn
how to take care about your HDD. So ... there is no problem to move RAID
disk to another computer. Even there is no problem to delete you RAID
array, then create the wrong one and again create the right one. I have
seen manytimes during the recovery process the warning like: "All your
data will be unrecoverable lost" but i have all of my data back and
everything is OK. You just have to have the "know how", how to repair
the broken raid. It took a while to learn, I hoped you will help me, but
as i can see, the only answer is "Your fool". So ... thanks for
destruktive options .....

It is not about wthether it can be done. The question is whether it
can be done reliably. With software-RAID the answer would be "yes".
with your set-up it is "maybe" or "no". If you have the data on a
RAID in the first place, then you obviously care about it (unless
it is RAID0). So you should also care about having a low-risk way
to move the data to a new computer.

Also others may try to follow your advice. Some of them may run into
the odd RAID controller where it does not work or do one misstep and
loose everything. I have done risky data moves myself and often it
worked. But the few times I lost valuable data made me careful and
today I double check and rather have one backup more than needed.

Arno
 
Back
Top