HP XP RAID Manager Software - Manual (Page 12)

Table 2 Bind mode cache requirements (continued)
Cache Residency Cache
Requirement Capacity Specifications RAID Level or Volume
Type System Type
= 198 KB = 12 cache
segments
Cache segments needed per slot: 12
(slot capacity / cache segment
capacity)
Note: Even though a mainframe track
is 56 KB, because cache is divided
into 16.5 KB segments, it requires 4
segments.
2 times the space required for
user data: 1 slot = 2 × 66 KB Slot capacity: 66 KB
Cache segment capacity: 16.5 KB
RAID 1 mainframe, or
external volumes
= 132 KB = 8 cache
segments
Cache segments needed per slot: 8
(slot capacity / cache segment
capacity)
12 Performance overview