NEC 27U, User Manual

Contents   iii

Contents

Contents

Contents

Contents

Proprietary Notice

Using This Guide................................................................................................................... v
Text Conventions..................................................................................................................vi
Related Documents...............................................................................................................vi
Safety Notices......................................................................................................................vii

Safety Notices for Users Outside of the U.S.A. and Canada..........................................vii

Care and Handling..............................................................................................................viii

Introduction ........................................................................ 1-1

Introduction ........................................................................................................................1-2
System Rack Models ..........................................................................................................1-2
Express5800 Configuration Assistant ................................................................................1-2
42U System Rack ...............................................................................................................1-3
Multi-Bay System Rack......................................................................................................1-5

Planning Your Site ............................................................. 2-1

Equipment Location ...........................................................................................................2-2

Space Requirements ......................................................................................................2-2
Environmental Conditions.............................................................................................2-4
Floor Construction.........................................................................................................2-5

System Rack Placement......................................................................................................2-7
Air Conditioning.................................................................................................................2-9

Cooling Capacity...........................................................................................................2-9

Electrical Facilities ...........................................................................................................2-10

Uninterruptible Power Source (UPS) ..........................................................................2-10
Power Distribution Unit (PDU)...................................................................................2-10

Grounding Requirements..................................................................................................2-11

Planning Your System Rack Configuration ..................... 3-1

Cabling Constraints ............................................................................................................3-2
Cable Summary ..................................................................................................................3-2

RAID Cable Restrictions...............................................................................................3-3
Concentrator Cable Lengths..........................................................................................3-3

Vertical Spacing .................................................................................................................3-3
Configuration Guidelines ...................................................................................................3-6
Calculating Load and Determining UPS  On-Battery Run Time .......................................3-8

Installing the System Rack................................................ 4-1

Introduction ........................................................................................................................4-2

What You Need.............................................................................................................4-2

Unpacking the System Rack and Components...................................................................4-3

Opening Front and Rear Doors .....................................................................................4-5
Removing Rack Side Panels..........................................................................................4-6

Leveling the System Rack ..................................................................................................4-7
Installing Rack Frame Link Kits ........................................................................................4-8

What You Need.............................................................................................................4-8

Attaching the Stabilizer to the System Rack ....................................................................4-10