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Drobo Data Recovery
Drobo devices are packed with features and use a proprietary “BeyondRAID” technology created by the DROBO team. BeyondRAID differs from traditional RAID in that drives with different capacities can be used (BeyondRAID’s mixed drive ultilisation feature.)
What Makes Drobo Units Special ?
Each Drobo unit is programmed to make the most effective use of any disks inserted into the system.
BeyondRAID’s drive re-ordering feature: – In traditional RAID systems the exact disk order must always be maintained when replacing disks or migrating to a new system. With BeyondRAID the Disk order does not make a difference, which should reduce the amount of risk when rebuilding an array.
Multiple on the fly protection methods: – BeyondRAID allows (whilst in operation the change between single and dual drive redundancy as long as there is sufficient free disk space remaining to allow the change.
BeyondRAID’s Instant expansion feature: – Unlike traditional RAID’s that require a complete rebuild after replacing each individual disk with one of a larger capacity, the BeyondRAID instant expansion feature allows you to replace any disk at any time, this stems from the fact that a BeyondRAID allows the use of different capacity disks. Replacing a single disk allows access to the newly added capacity.
Drobo BeyondRAID Pros and Cons
Dual drive systems gain no storage benefit: – As you add more disks to a Drobo BeyondRAID system you start to gain the benefits of the newly added capacity but when using a dual disk system this benefit is not seen. As an example if you have a dual disk system containing a 1TB drive and a 3TB drive the resulting available capacity will only be 1TB as the only available dual disk configuration is disk mirroring (RAID 1)
Real world Challenges: – In the case of multiple disks with differing capacities the system will still have to achieve redundancy of the largest capacity disk, i.e. If you have a 5 disk system containing 4 x 500GB disks and a single 2TB disk you will lose 2TB of storage capacity as the system will have to reserve at least 2TB in order to support the failure of the largest disk.
Drobo Gen 2 not working
“Whilst transferring files from my four disk drive Drobo Gen 2 it stopped working and would no longer boot. The unit reported a solid red capacity light on drive number 4. I tried the disks in a new Drobo with no success. The Drobo help desk informed me that the system was in data protection mode and NOT protected against a single drive failure. They identified drive 3 as being faulty and advised that I duplicate the drive and try this which I did but this failed as well. Drobo help desk told me that 3 of my 4 drives are OK but as it was striped I had lost all my data. I was looking at a disaster as All my client contacts and orders were on the system. I contacted Datlabs who successfully rebuilt the system using the original drive set and recovered all my data. They are truly geniuses at what they do!”