1. A method comprising: in a network comprising a storage array and a host computer, wherein the host computer comprises a flash memory cache, and the storage array comprises physical storage drives on which data is stored, and the data stored on the physical storage drives is presented by the storage array as being stored on logical storage devices: associating a first logical storage device of the logical storage devices with a business process; responsive to a first IO to the first logical storage device: determining that the first IO is associated with the business process; responsive to determining that the first IO is associated with the business process, attaching the first logical storage device to the host computer flash memory cache; and copying data associated with the first IO from the storage array to the host computer flash memory cache, thereby enabling the data associated with the first IO to be available from the host computer flash memory cache; and responsive to a second IO to a second logical storage device: determining that the second IO is not associated with the business process; and responsive to determining that the second IO is not associated with the business process, not attaching the second logical storage device to the host computer flash memory cache.