INT 21 - Novell NetWare - FILE SERVER - GET DISK CACHE STATISTICS
        AH = E3h subfn D6h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
            C6h no console rights
Notes:  this function is supported by Advanced NetWare 2.1+
        the calling workstation must have console operator privileges
SeeAlso: AH=E3h/SF=D5h,AH=E3h/SF=D8h,AH=E3h/SF=D9h,AH=E3h/SF=E6h

Format of request buffer:
Offset  Size    Description
 00h    WORD    0001h (length of following data)
 02h    BYTE    D6h (subfunction "Get Disk Cache Statistics")

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 004Eh (length of following results buffer)
 02h    DWORD   clock ticks since system started (big-endian)
 06h    WORD    number of cache buffers (big-endian)
 08h    WORD    size of cache buffer in bytes (big-endian)
 0Ah    WORD    number of dirty cache buffers (big-endian)
 0Ch    DWORD   number of cache read requests (big-endian)
 10h    DWORD   number of cache write requests (big-endian)
 14h    DWORD   number of cache hits (big-endian)
 18h    DWORD   number of cache misses (big-endian)
 1Ch    DWORD   number of physical read requests (big-endian)
 20h    DWORD   number of physical write requests (big-endian)
 24h    WORD    number of physical read errors (big-endian)
 26h    WORD    number of physical write errors (big-endian)
 28h    DWORD   cache get requests (big-endian)
 2Ch    DWORD   cache full write requests (big-endian)
 30h    DWORD   cache partial write requests (big-endian)
 34h    DWORD   background dirty writes (big-endian)
 38h    DWORD   background aged writes (big-endian)
 3Ch    DWORD   total cache writes (big-endian)
 40h    DWORD   number of cache allocations (big-endian)
 44h    WORD    thrashing count (big-endian)
 46h    WORD    number of times LRU block was dirty (big-endian)
 48h    WORD    number of reads on cache blocks not yet filled by writes
                (big-endian)
 4Ah    WORD    number of times a fragmented write occurred (big-endian)
 4Ch    WORD    number of cache hits on unavailable block (big-endian)
 4Eh    WORD    number of times a cache block was scrapped (big-endian)