Shulou(Shulou.com)06/03 Report--

[server data recovery failure description]

The client server belongs to the IBM brand DS 4800 model server. There are 5 hard drives at the bottom of the server to form a raid5 array, and the single hard disk is 3TB and SAS hard disk. Windows operating system.

The server suffered an unexpected power outage at work, and when the administrator restarted the server, the server was cut off again due to the power supply failure of the computer room. After restarting the server again, the raid array prompt "cannot find the storage device", try to enter the raid management module to view information, but every time you enter the raid management module will cause the server to crash, many attempts are still in a state of panic, the administrator has to contact the data recovery company for server data recovery.

[server data recovery scheme]

1. The server data recovery engineer in North Asia first physically inspected all the hard drives in the server and found no physical faults and bad paths.

two。 Make a mirror backup of all the hard drives of the server. Note: in order to ensure data security, the mirror target storage needs to select an array with redundant functions.

3. After the backup of the original server is completed, the server data recovery engineer analyzes the data of the backup file, determines the data block size, stripe information, disk sequence and check mode of the 6 hard disks in the server through the file system storage rules, and rebuilds the virtual raid group in the virtual environment.

4. After logically checking the data in the constructed RAID to ensure that the parameters applied in the refactoring RAID are correct, complete verification is carried out against the data that users are most concerned about.

5. After the user confirms that the data recovery result has fully reached the expected (the data is restored to the pre-failure state), all the user business data are migrated to the user storage, and the data recovery is complete.

[server storage security recommendations]

1. Try to ensure a stable power supply in the computer room, so as to reduce the impact of abnormal power supply on the host and storage

two。 It is best to configure UPS for important servers and storage, which can ensure that the core business system can continue to work normally for a certain period of time in case of accidental power outage in the computer room, thus winning valuable time for enterprises to seek emergency solutions.

3. The security status of the server that has been in service for a long time should be checked regularly, and its overall operation status should be evaluated to determine whether to upgrade the hardware and system comprehensively, and to formulate an emergency plan to deal with sudden data disasters in advance to reduce business losses caused by data disasters.

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