Patent ID: 9684571
Date: 2017-06-20
CPC Classifications: G06F

Claim:
1. A method comprising: backing up metadata of a namespace constituent volume into a first namespace mirror volume, wherein the namespace constituent volume stores the metadata for data objects stored in data constituent volumes that are separate from the namespace constituent volume, wherein the first namespace mirror volume is separate from the namespace constituent volume and separate from the data constituent volumes; determining to provide metadata indicated in a first metadata request from the namespace constituent volume for a first data object of the data objects based, at least in part, on a comparison of a frequency of access operations on the namespace constituent volume with a frequency of access operations on the first namespace mirror volume; based on an indication that the namespace constituent volume is unavailable, redirecting the first metadata requests to the first namespace mirror volume instead of the namespace constituent volume; and providing metadata for the first data object from the first namespace mirror volume.