IBM Redbooks ServeRAID-MR10i, User Manual

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2-8 ServeRAID-MR10i SAS/SATA Controller Hardware Installation
Figure 2.4 SAS Plugs, SATA II Plugs, and SAS Backplane
Receptacle Connector
2.4.1 Connecting the ServeRAID-MR10i RAID Controller to Physical
Disks
This subsection provides step-by-step instructions for connecting the
ServeRAID-MR10i controller to the SAS physical disks and SATA II
physical disks.
Figure 2.5 shows how to connect the internal SAS cable
from the controller to the physical disks.
Follow these steps to connect the ServeRAID-MR10i controller with
internal connectors to a physical disk.
Step 1. Plug the connector on the internal cable into the internal
connector on the controller.
Step 2. Plug the connector on the other end of the internal cable into
the connector on the SAS physical disk or the SATA II physical
disk.
Step 3. If you have another physical disk, connect it to another plug on
the internal cable.
Serial ATA
SAS Primary
Physical Link
SAS Secondary
Physical Link
Power
SATA II
Physical Link
Power
Serial Attached SCSI
SAS Backplane
Receptacle Connector
Note: SATA II backplane connectors
do not accept SAS drives.
Power
SAS Secondary
Physical Link
SATA II/SAS
Primary
Physical Link
Replacing a Failed Controller Containing Data in the IBBU 2-9
You can connect other devices if the cable has more
connectors.
Figure 2.5 Connecting the ServeRAID-MR10i SAS/SATA Controller
with Internal Connectors to a Physical Disk
2.5 Replacing a Failed Controller Containing Data in the
IBBU
The ServeRAID-MR10i intelligent Battery Backup Unit is a cache
memory module with an integrated battery pack. The module provides
an uninterrupted power source to the module if power is unexpectedly
interrupted while cached data is still present. If the power failure is the
result of the ServeRAID-MR10i controller itself failing, then the iBBU can
be moved to a new controller and the data can be recovered. The
replacement controller must have a cleared configuration.