IBM Power System E850C Technical Overview And Introduction page 91

Scenario 4: Dual Virtual I/O Servers sharing two EXP24S
This scenario assumes a dual Virtual I/O Server with two PCIe SAS adapters #5901 each
and two EXP24S set on mode 2. This configuration allows for up to 24 disks to be attached to
each Virtual I/O Server (2 per drawer). If compared to scenario 3, this scenario has the
benefit of allowing disks from different EXP24S drawers to be mirrored. This mirroring allows
for hot maintenance of the whole EXP24S drawers if all data is properly mirrored. Figure 2-30
shows the connection diagram and components of the solution.
EXP24S – Mode 2 with 2 x #5901 (config indicator #9361)
Virtual
#5901
Server
#5901
EXP24S – Mode 2 with 2 x #5901 (config indicator #9361)
Figure 2-30 Dual Virtual I/O Servers sharing two EXP24S
The following are the required feature codes for this scenario:
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
This scenario provides no SSD support.
2 x SAS YO Cables
Virtual
I/O I/O
Server
#1 #2
2 x SAS YO Cables
Chapter 2. Architecture and technical overview
GROUP 1
#5901
#5901
GROUP 1
GROUP 2
GROUP 2
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