Second
expansion enclosure
Server
enclosure
First
expansion enclosure
Third
expansion enclosure
|
| OUT ports to next enclosure |
| ||||
|
|
| switchFCswitch | 16 | switchFCswitch | Up to 16 DDMs | |
0Loop | enclosuresFour | looppermaximum | connections | ||||
| |||||||
|
|
|
|
|
| per enclosure | |
|
|
|
| 1 |
| Raid controller | |
|
|
|
|
|
| DISK EXP ports | |
|
|
|
| 16 |
| Internal | |
|
|
|
|
|
| ||
|
|
| FC | 1 | FC | through | |
|
|
|
|
|
| midplane | |
| Controller 0 |
| Controller 1 |
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Raid controller |
Loop1 | enclosuresFour | looppermaximum | switchswitchFC | 1 | switch | DISK CONTRL |
|
| |||||
|
|
|
|
| switch | ports |
|
|
|
|
|
| |
|
|
|
| 16 | FC | Cables between |
|
|
|
|
| ||
|
|
|
|
|
| |
|
|
|
|
|
| enclosures |
|
|
|
| 1 |
|
|
|
|
|
|
|
| Fibre channel |
|
|
| FC |
| FC | switches |
|
|
| 16 |
|
OUT ports to next enclosure
Figure 2-10 Switched disk expansion
DDMs
Each DDM is hot plugable and has two indicators. The green indicator shows disk activity while the amber indicator is used with light path diagnostics to allow the customer to identify and replace a failed DDM.
At present, the DS6000 allows the choice of four different DDM types:
73 GB, 15K RPM drive
146 GB, 10K RPM drive
146 GB, 15K RPM drive
300 GB, 10K RPM drive
All DDMs exist in what are called array sites. Array sites containing four DDMs are created as DDMs are installed. During configuration discussed in Chapter 10, “DS CLI” on page 195, you have the choice of creating a
The first and the third array sites created on each loop each contribute one DDM to be a
32DS6000 Series: Concepts and Architecture
