Chapter 2. Architecture and technical overview
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Draft Document for Review October 14, 2014 10:19 am
5137ch02.fm
Scenario 4 - Dual Virtual I/O Servers sharing two EXP24S
This scenario assumes a dual Virtual I/O Server with two PCIe SAS adapter #5901 each and
two EXP24S set on mode 2, allowing for up to 24 disks to be attached to the each Virtual I/O
Server (2 per drawer). If compared to scenario 3, this scenario has the benefit to allow disks
from different EXP24S drawers to be mirrored, allowing for hot maintenance of the whole
EXP24S drawers if all data is properly mirrored. Figure 2-37 on page 93 shows the
connection diagram and components of the solution.
Figure 2-37 Dual Virtual I/O Servers sharing two EXP24S
For this scenario, the required feature codes are:
Two EXP24S drawers #5887 with indicator feature #9361 (mode 2 with dual #5901)
Four PCIe SAS adapter #5901
Four SAS YO cables 3 Gbps with proper length.
There is no SSD support on this scenario.
EXP24S – Mode 2 with 2 x #5901 (config indicator #9361)
#5901
2 x SAS YO Cables
Virtual
I/O
Server
#1
#5901
Virtual
I/O
Server
#2
#5901
#5901
EXP24S – Mode 2 with 2 x #5901 (config indicator #9361)
2 x SAS YO Cables
GROUP 1
GROUP 2
GROUP 1
GROUP 2
