Understand Cache Slot.

Hi,

Trying to understand cache calculation on VMAX3 Frame, when we create device, each time it reducing some slot because it will allocate some track per device, but these tracks are not getting released when we delete those device.

Here is my question, what is calculation between slot and MB here, reason i am asking because total installed cache unit is in "MB" and Available cache unit is "slot". how can we calculate what is current available cache on Frame right now in MB?

    Cache Size (Mirrored)                : 1990656 (MB)

    # of Available Cache Slots           : 13706440

    Max # of System Write Pending Slots  : 12029830