This is a count of hits on the disk quota cache, meaning lookups for a user's or account's disk quota information that were satisfied from cached data. An administrator compares this to vmsFileQuotaAttempt to gauge how efficiently quota checks, performed during file creation and extension, are being served from memory. For example, a system with many active users each hitting their own quota entries would show a lower hit ratio than one with a small number of frequently accessed quota entries fitting comfortably in cache.