NonStop S-Series Server Description Manual (G06.24+)

Input/Output Operations
HP NonStop S-Series Server Description Manual—520331-003
10-13
Packaging and Delivery of Storage Commands
Figure 10-6. I/O Process Sends Command Descriptor Block to Controller
Storage
I/O Device
Module
Driver
I/O
Process
Data Buffers
Address(es) of Data
Processor
Header
Command
Descriptor
Block
Buffer
Address(es)
Command
Entry
(CE)
Work
Space
H
A
D
C
ServerNet
Write Request
Packet
CE
ServerNet
Hardware
ServerNet Adapter or MFIOB
ServerNet
Bus Interface
CE
CE
CE
CE
CE
CE
CE CE CE CE CE
CE CE CE CE CE
Device 1 Queue
Device 2 Queue
Controller
Processor’s
Request Queue
for
Target
Controller
Tag
Commands
VST352.vsd