HP server DL380 four SAS hard disk RAID5 data recovery success

Customer Name: A well-known car company

Media Name: HP ProLiant DL380 G7, four Seagate 1TB hard drives raid5

Fault description: The server storage data cannot be accessed normally. There is a strong abnormal sound of the hard disk, and all the terminals of the company cannot access the server normally.

HP server DL380 four SAS hard disk RAID5 data recovery success

HP ProLiant DL380 G7 Server 4 Disk RAID5 Data Recovery

HP server DL380 four SAS hard disk RAID5 data recovery success

RAID5 data recovery lacks disk recovery without affecting data

Since a hard disk was violently squeaking when it was powered on, it was judged by experience that the disk was scratched. Therefore, we decided to use the algorithm of one disk to recover the data of RAID5.

Data recovery and forensics process:

1. After further testing and confirmation, the hard disk that has made a loud noise has scratched the disk, so we have to lack a hard disk for raid5 data recovery and reorganization;

2. Perform a full disk image on the remaining 3 hard disks, then analyze the underlying data and find that it is a variant of the HP dual-loop structure. The small loop uses not the typical 16 strips but 8 strips.

HP server DL380 four SAS hard disk RAID5 data recovery success

Darth intelligent RAID data recovery software RAID data recovery is simpler

3. Due to the lack of a hard disk, the missing hard disk data is verified by an exclusive OR algorithm.

4. Finally, the D-Recovery for RAID data is reorganized by Dash Intelligent RAID data recovery software, and all 250GB data is extracted. After the customer verification, the data recovery is 100% successful.

Technical difficulties and suggestions:

After the server RAID fails, try not to restart the machine as often as possible, and you can't force the offline hard disk to go online. This may cause further damage to the data.

Generally, an experienced network administrator will contact the experts of the Darth Data Recovery Center for testing before making a decision.

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