Dell 38XX, 34XX, 32XX, 36XX manual Cache

Cache	The amount of SSD cache storage that is allocated, expressed as a percentage of
Allocation (%)	the SSD cache storage that is available to this RAID controller module. Derived
	from allocated bytes / available bytes.
	Cache Allocation percentage normally shows as 100%. If this number is less than
	100%, it means either the cache has not been warmed or the SSD cache capacity is
	larger than all the data being accessed. In the latter case, a smaller SSD cache
	capacity could provide the same level of performance. Note that this does not
	indicate that cached data has been placed into the SSD cache, it is simply a
	preparation step before data can be placed in the SSD cache.
Cache	The amount of SSD cache storage that contains data from enabled virtual disks,
Utilization (%)	expressed as a percentage of SSD cache storage that is allocated. This value
	represents the utilization or density of the SSD cache. Derived from user data
	bytes / allocated bytes.
	Cache Utilization percentage normally is lower than 100%, perhaps much lower.
	This number shows the percent of SSD cache capacity that is filled with cache data.
	The reason this number is lower than 100% is that each allocation unit of the SSD
	cache, the SSD cache cache-block, is divided into smaller units called sub-blocks,
	which are filled somewhat independently. A higher number is generally better, but
	performance gains can be significant even with a smaller number.

These additional statistics are included when you save the data to a file:

Read Blocks	Number of blocks in host reads.
Write Blocks	Number of blocks in host writes.
Full Hit Blocks	Number of block cache hits.
	The full hit blocks indicate the number of blocks that have been read entirely from
	SSD cache. The SSD cache is only beneficial to performance for those operations
	that are full cache hits.

Partial Hits

Partial Hits - Blocks

Number of host reads where at least one block, but not all blocks, were in the SSD cache. This is an SSD cache miss where the reads were satisfied from the base virtual disk.

Partial cache hits and partial cache hit blocks result from an operation that has only a portion of its data in the SSD cache. In this case, the operation must get the data from the cached HDD virtual disk. The SSD cache offers no performance benefit for this type of hit. If the partial cache hit blocks count is higher than the full cache hit blocks, it is possible that a different I/O characteristic type (file system, database, or web server) could improve the performance.

Number of blocks in Partial Hits.

Partial cache hits and partial cache hit blocks result from an operation that has only a portion of its data in the SSD cache. In this case, the operation must get the data from the cached HDD virtual disk. The SSD cache offers no performance benefit for this type of hit. If the partial cache hit blocks count is higher than the full cache

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