Host 1, Host Adapter 1 and 2 | Host 4, Host Adapter 1 and 2 |
Host 1 |
|
| Host 4 |
|
|
|
| |
2 Gb/s1 Gb/s! | 2 Gb/s1 Gb/s | ! | 2 Gb/s1 Gb/s! | 2 Gb/s1 Gb/s! | 2 Gb/s1 Gb/s! | 2 Gb/s1 Gb/s! | 2 Gb/s1 Gb/s! | 2 Gb/s1 Gb/s! |
OUT |
| OUT | OUT | OUT | OUT | OUT | OUT | OUT |
IN |
| IN | IN | IN | IN | IN | IN | IN |
Host 2 | Host 3 |
Host 2, Host Adapter 1 and 2 Host 3, Host Adapter 1 and 2
| In ports | Out ports |
|
| Last enclosure |
|
| Drive loop A |
Group | 1 | Drive loop B |
|
| Drive loop C |
|
| First enclosure |
Storage server | Out ports | |
In ports | ||
|
| First enclosure |
|
| Drive loop D |
Group 2
Last enclosure
Host-side fibre channel cabling
Attention: Install the DS4400 Storage Server and all storage expansion enclosures in the rack cabinet before cabling the configuration.
1.Connect a host adapter to the Host 1 (top) port on
2.For a second redundant host, connect two host adapters to the Host 2 (bottom) ports on host- side mini hubs 1 and 2.
3.For a third redundant host, connect two host adapters to the Host 3 (bottom) ports on host- side mini hubs 3 and 4.
4.For a fourth redundant host, connect two host adapters to the Host 4 (top) ports on
Storage expansion enclosure support
The DS4400 Storage Server enables you to mix certain storage expansion enclosure models in the same storage server configuration. In some cases, to intermix storage expansion enclosure models you must meet additional requirements such as firmware updates or grouping restrictions. To intermix fibre channel and SATA drives, you must purchase the FC/SATA Enclosure Intermix premium feature. The DS4400 supports up a maximum of 224 drives in two redundant drive loop pairs.
Refer to the IBM TotalStorage DS4000 Hard Drive and Storage Expansion Enclosure Installation and Migration Guide for complete information on storage expansion enclosure support and intermixing requirements for the DS4400 Storage Server.
Drive-side fibre channel cabling
1.Start with the first storage expansion enclosure of Group 1 and connect the In port on the left ESM board to the Out port on the left ESM board of the second (next) enclosure.
2.Start with the first storage expansion enclosure of Group 1 and connect the In port on the right ESM board to the Out port on the right ESM board of the second (next) enclosure.
3.If you are cabling more storage expansion enclosures to this group, repeat steps 1 and 2, starting with the second enclosure.
4.If you are cabling a second group, repeat step 1 to step 3 and reverse the cabling order; connect from the Out ports on the ESM boards to the In ports on successive storage expansion enclosures according to the illustration on the left.
5.Connect the Out port of
6.Connect the In port of
7.If you are cabling a second group, connect the Out port of
8.Ensure that each storage expansion enclosure has a unique ID (switch setting) and that the left and right ESM board switch settings on each storage expansion enclosure are identical.
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