RAID
Data Recovery
Example
case studies - Windows
Business
Type: Newspaper
Location: Sheffield
RAID Type: 8 disk NAS RAID 5 server
Volume of data: 550 Gb
Disk type: 8 x 72Gb SCSI disks
Operating System: 2000 Server
Service: Priority (2 - 4 days)
Downtime: 3 days
Outcome: Data
recovered successfully
Overview: This RAID held individual user data
and company accounts information. At the time of the failure the
company were being audited. The crash was caused by the attempted
removal & replacement of faulty disks from the array. Once
the server had crashed, some drives were shown as IMPACTED and
the RAID could not be bought back online.
Notes: Diagnosis revealed some corruption to
the data. Analysis showed that it was possible to reconstruct
& recover the data correctly. The data was returned to the
customer on the original RAID.
Business
Type: Mailing Centre
Location: North West
RAID Type: 2 x 6 disk NAS RAID 5 servers
Volume of data: > 1.2 Terrabytes
Disk type: 12 x SCSI
Operating System: 2003 Server
Service: Emergency (within 48 hours)
Downtime: 2 days - data was recovered over the
weekend
Outcome: Data
recovered successfully
Overview: This company sends out bulk mailshots
to individuals across the UK. Their customers include banks, building
societies and insurance companies. During a system upgrade, access
to both servers was lost and the RAID reported both volumes as
DEAD.
Notes: Despite being told by Dell technical
support that the data was lost, we were able to provide a full
recovery of the data from both RAID arrays. The data
was returned to the customer on a custom built RAID 5, due to
the large volume of data.
> Data Clinic
recover data for some of the UK's best known companies - click
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Links:
> 8
Golden rules to follow to minimize data loss
> Minimizing
data loss on RAID arrays and servers
> RAID
data recovery case studies: Mac
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data recovery page
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