One Ds4800 And One Storage Expansion Enclosure; Ds4800 Storage Subsystem Ports And Controllers; Ds4800 Storage Subsystem Drive Ports And Drive Channels - IBM DS4800 User, Installation And Maintenance Manual

Controller B
Figure 47. DS4800 Storage Subsystem ports and controllers
Table 15 provides a list of the drive channels that are associated with each of the
controller drive ports.
Table 15. DS4800 Storage Subsystem drive ports and drive channels
Drive Channel
Number
1
2
3
4
Note: In the following drive cabling figures, the DS4800 graphics are simplified to

One DS4800 and one storage expansion enclosure

If you are cabling one DS4800 Storage Subsystem to one storage expansion
enclosure, Figure 48 on page 71 shows the recommended cabling scheme.
70
IBM System Storage DS4800 Storage Subsystem: Installation, User's, and Maintenance Guide
Drive channel 1
Drive ports
Controller A
Host ports
1 3 4
2
1
Ethernet ports
Controller
A
A
B
B
show only the drive ports of each controller. In addition, the storage
expansion enclosures are simplified to show only the ESM FC ports. Do not
use these graphics for actual cabling diagrams; instead, use the relevant
instructions found in "Connecting storage expansion enclosures to the
DS4800" on page 59.
Drive channel 2
1 3 4
2
2
Drive channel 3
Drive channel 4
Drive Port
Numbers
4 and 3
2 and 1
1 and 2
3 and 4
Ethernet ports
Host ports
74120
Drive ports
Redundant drive channel
pair
1
2
1
2