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Figure 3-18 x3850 M2 and x3950 M2: internal SAS SFF-8087 board connector
Attaching an external storage expansion EXP3000 to the external port is
possible. See Figure 3-19. The LSI1078 SAS onboard controller can use this
port in the IR mode in configuration of up to 10 disk in RAID-0 in one volume.
Note: For significant performance reasons, IBM recommends you attach an
EXP3000 to the external SAS port only when you have the ServeRAID-MR10k
installed. Connecting an EXP3000 to the external SAS port with just the
onboard LSI 1078 controller is not recommended and is not supported.
Figure 3-19 x3850 M2 and x3950 M2: external SAS SFF-8088 connector
By upgrading your server with the ServeRAID-MR10k adapter, you enable
further RAID features. This card works in the MegaRAID (MR) mode. The
adapter is described in 3.3.3, "ServeRAID-MR10k RAID controller" on page 128.
126
Planning, Installing, and Managing the IBM System x3950 M2
A SAS SFF-8087 straight
body internal board
connector on the I/O
board
SAS SFF-8088
external connector
on the rear of the
server
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