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Raid 5 is only allowed 1 damaged hard drives raid 6 disk is damaged 2 - Raid 5 is only allowed 1 damaged hard drives (RAID 6 disk is damaged 2) | CứuDữLiệu.com

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Raid 5 is only allowed 1 damaged hard drives (RAID 6 disk is damaged 2)
Raid 5 is only allowed 1 damaged hard drives (RAID 6 disk is damaged 2)

1 . The Van de

Im still having problems Raid 5 with 2 hdd error .
Thanks for your understanding about Raid 5 consultants help :

Server : Super - E micro X7DVL
Specs: Seagate HDD Raid 5 with 6
Currently Unknown error disk 2 , 3 ( ​​tested this tool by Seagate 2 of this hdd not faulty , RAID5 controller itself still detect the HDD onboard with serial parameters , space )
Try to replace 2 new HDD in slot 2 , 3 , the best detect and enable raid
the disk is 0,1,4,5

Now how data recovery and Raid ( because it damaged the 2 HDD )

2 . Solution 1 potay

In principle Modular RAID 5 using 1 drive for parities . This means it is only enough to worry parities for 1 disk only. Meanwhile , RAID 6 can give ( n - 2 ) for parities place , so it can recover 2 disks.

I'm rather new to the RAID disk controller will recognize it. However, to reconstruct the data for RAID 5 does not have enough information to carry out . My condolences with you and hope the important data has been backed up by other means . Remember that RAID is not a backup solution . Although the probability of two disks in RAID 5 with more very low , does not mean it can not happen .


3 . Solution 2

1 . 2 I brought the damaged hard disk in RAID 5 which , brushing the freezer overnight .

2 . 1 Prepare the Linux server disk types allowing for you to use with RAID 5 ( SCSI his feet ) .

3 . On the Linux server , you must have enough disk space to create one image with a capacity of damaged discs . After the two discs are damaged freezer overnight , carry out and inserted into the Linux ( each disc one , then this new disk drive there ) . Try to mount it mount the same as a normal disk .

4 . Run the command : dd if = / dev / hdx of = / path / to / keep / fileabc ( / dev / hdx device that you just mount the disk lies freezer and / path / to / where they used to keep save the image of the disk lies on the Linux server freezer the other ) .

5 . Umount the disk " freezer " was then the Linux shutdown . Remove the disk " freezer " out , almost exactly 1 disk size , disk model ... as the " freezer " in the Linux .

6 . Boot up the computer and mount the new disk . Then run :
dd if = / path / to / keep / fileabc of = / dev / hdx ( this command with the command on the contrary , it will bring fileabc and put on the disc you just mount on Linux ) .

7 . Umount disks , removable disks and Linux shutdown that out .

8 . Perform the same steps 4-7 to disk " refrigerator " second .

9 . Carry 2 plates just get , try to mount RAID 5 if it does not recognize anything . Thank God one of the two are both RAID recovery will be restored .

What is not clear , he howled for an hour .

Good luck .


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