IBM DS4700 manual Ds470058

2 1

Controller A

1 2

Controller B

Left ESM

Right ESM

Left ESM

Right ESM

Left ESM

Right ESM

Left ESM

Right ESM

Left ESM

Right ESM

ds470051

Left ESM

Right ESM

ds470058

Figure 57. One DS4700 Express and up to six storage expansion enclosure — Not recommended

One DS4700 Express and two or more storage expansion enclosures in a mixed configuration

A mixed configuration is a configuration in which you have more than one type of storage expansion enclosure. If possible, it is recommended that you do not mix different types of storage expansion enclosures in the same drive channel pair.

Figure 58 on page 77 shows the recommended cabling topology if you have three EXP710s and three EXP810s attached to the DS4700 Express. (The EXP710s are denoted in the graphic as
1 while the EXP810s are denoted as
2.)

Note: If you are mixing EXP100s with EXP710s and EXP810s, Figure 58 on page 77 is not the recommended cabling topology. Additional cabling rules and restrictions apply. See “One DS4700 Express and two or more storage expansion enclosures in a mixed configuration” on page 94.

76IBM System Storage DS4700 Express Storage Subsystem: Installation, User’s and Maintenance Guide