Product manual

CDA 7 Input/Output Operations
77 A1 69UP Rev00 3-9
3.2.2 Read Operations
There are two types of read operations: read hit and read miss. The following
figure illustrates the data flow for read operations.
CHANNEL CHANNEL
READ HIT
READ MISS
CHANNEL
DIRECTOR
CACHE
CHANNEL
DIRECTOR
CACHE
DISKS
Figure 3-7. Read Operations