NetApp has revealed plans to enhance its flash offerings and offer a single tier, flash cached array design with a sexy new name. Remember Hybrid Aggregates? They have become Flash Pools. According to our close-to-Sunnyvale sources, we should envisage an array with a controller having Flash Cache – for read I/O acceleration – …
So the same as what ZFS has been doing for quite some time, ZIL and L2ARC.
Technically no but the idea is similar. The Flash Pool is a unified read and write cache whereas L2ARC and ZIL are two seperate caches for read and write. Also Flash Pool is L3 if used in conjunction with Flash Cache, which is a system-wide L2 read cache.
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