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Flash Accel 1.1 Installation and Administration Guide : Introduction to Flash Accel : How cache is affected by other operations in the storage system
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Upgrading NetApp storage with a new Data ONTAP release.
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Performing a Data ONTAP restore or other operation that could revert older data on the NetApp storage system.
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The Flash Accel intelligent cache coherency feature will invalidate the outdated cached data when a NetApp SnapRestore operation occurs. All valid cache information is retained, which makes for a much faster rewarming of the cache during a restore operation.
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At this time Flash Accel is certified to work only with vSphere 5.0, but future upgrades of VMware software should not affect the cache.
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