Chapter 3. Installing an optional 2U SAS expansion
enclosure
Up to 20 optional SAS expansion enclosures can be connected to each I/O group in the system. To install
a 5U SAS expansion enclosure, see the following chapter.
Installing an optional SAS expansion enclosure requires the following steps:
1. Installing support rails for an SAS expansion enclosure
2. Installing the optional SAS expansion enclosure into the rack
3. Connecting the optional SAS expansion enclosures to the 2145-SV1
Installing support rails for 2U SAS expansion enclosures
Before you install 2U SAS expansion enclosures, you must rst install support rails.
Before you begin
Note: Up to 20 optional SAS expansion enclosures can be connected to each I/O group in the system.
Refer to the planning worksheet completed by the customer.
Procedure
To install the support rails, complete the following steps.
1. Locate the expansion enclosure rails (Figure 35 on page 31
).
The rail assembly consists of two rails that must be installed in the rack cabinet.
Figure 35. Expansion enclosure support rails
2. Locate the hardware that is used to install the rails, including two rail springs, two sets of eight
bracket pins, and two M5 screws.
Set the hardware aside for use later in the installation process.
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Copyright IBM Corp. 2014, 2018 31
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