Does RAID have a place in object-oriented storage environments?
Object storage was actually created as a RAID replacement. Although RAID has been the de facto standard for data protection for decades, RAID has trouble scaling to match the needs of today's larger environments.
One problem with RAID is the time it takes to rebuild the contents of a failed multi-terabyte drive. In addition, when using RAID 5 or RAID 6, storage performance can be significantly diminished while the array is rebuilt.
Object-oriented storage is designed to address these problems by dealing with objects rather than file systems. In an object storage environment, each disk's contents can be mirrored multiple times. That means if a disk were to fail, the storage environment can simply redirect requests to a different copy of the disk. The performance impact involved is minimal and this approach also reduces the urgency of replacing failed disks because several other replicas of the disk may be readily accessible.
Going back to the original question, I think an argument could be made that object-level storage uses a variation of policy-driven RAID, even if vendors do not explicitly use the term RAID. After all, most RAID offerings have two-way or three-way mirroring capabilities. Object storage also uses multi-copy mirroring, but this is usually referred to as replication.
Dig Deeper on Enterprise storage, planning and management
Related Q&A from Brien Posey
Triple-level cell flash is designed to overcome one of the key problems with flash storage: capacity.continue reading
Brien Posey says that with HP working on a memristor-based computer it plans to launch by 2020, the technology could eventually succeed NAND flash.continue reading
Instant recovery allows users to run a virtual machine from a backup copy. We list the top five fallacies around the technology.continue reading
Have a question for an expert?
Please add a title for your question
Get answers from a TechTarget expert on whatever's puzzling you.