IBM’s award winning V7000 and V3700 systems offer the best of both disk worlds with Easytier. Easy Tier is a function that responds to the presence of solid-state drives (SSDs) in a storage pool that also contains hard disk drives (HDDs). The system automatically and non-disruptively moves frequently accessed data from HDD MDisks to SSD MDisks, thus placing such data in a faster tier of storage. Easy Tier eliminates manual intervention when assigning highly active data on volumes to faster responding storage. In this dynamically tiered environment, data movement is seamless to the host application regardless of the storage tier in which the data resides. Manual controls exist so that you can change the default behaviour, for example, such as turning off Easy Tier on storage pools that have both types of MDisks.
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