Non-disruptive data migration between processing systems that do not share storage
AssigneeNetApp, Inc.
InventorsPrashanth Radhakrishnan, Vaibhav Singh
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Abstract
A technique is disclosed for non-disruptive migration of data between storage on hosts that do not share storage with each other. Aggregate relocation is enabled to operate between the hosts in the absence of shared storage connectivity. The technique includes mirroring an aggregate from storage of a first host to storage of a second host by using a sub-RAID level proxy in each of the first and second hosts to proxy data communications between the hosts. The proxy is used in lieu of the mirroring application in the first host having direct access to the storage devices of the second host. The technique further includes relocating the aggregate from the first host to the second host.
Claims7
A method comprising:
- operating a first storage server which includes a first storage set;
- importing to the first storage server a second storage set of a second storage server, via a sub-RAID level proxy mechanism, wherein at least one of the first storage set and the second storage set is DAS;
- converting an aggregate on the first storage set into a mirrored aggregate by creating a local plex on the first storage set;
- sending data from the first storage server to the second storage server to cause a mirror plex on the second storage server to become synchronized with the local plex;
- and
- causing the aggregate to be relocated from the first storage server to the second storage server.
Dependencies are inferred from the claim text.