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Installing the Cache Expansion Unit 55
Active Archive Appliance (A3) v6.5 PowerFile Confidential Racking and Installation Guide
Before You Begin
Do not install the 12 1-TB HDD into the Cache Expansion Unit before installing the chassis in
the rack. You will install the hard disk drives into the chassis after it is installed in the rack.
Attaching the Mounting Brackets and Rails
To attach the mounting brackets and rails:
1. Attach each rear mounting bracket to a rear rack post using two of the provided pan head screws.
The side of the bracket with the long slot should be oriented inward. You will need to provide
your own cage nuts.
Mounting Bracket Attached to Fixed Rail
2. Attach the rails to the chassis.
Both a left rail and a right rail attach to the chassis. When attached, the longest side of the rail is
positioned at the bottom of the chassis and the side of the rail with beveled screw holes is facing
out. Use four or five of the black, flat head screws to attach each rail to the chassis. Attach the
rails to the chassis in such a way that the front of the Cache Expansion Unit can attach to the
front posts of the rack, and the tab portion of the rails slides into the rear mounting brackets.
3. Slide the rails into the rear mounting brackets that are attached to the rear rack posts.
4. Use the remaining four pan head screws to attach the front of the chassis to the front rack posts.
You will need to provide your own cage nuts.
5. After ensuring that the chassis is securely attached to the rack, insert each of the 12 hard disk
drives.