background image

NOTE: Do not print Pantone Red 032, 
it is for print registration only. 

Front

!

Flex 

 Enterpise 

System

1  

Before you begin

1.1

 

Lenovo Flex System
Enterprise Chassis
Types 7893, 8721,
and 8724

Quick Start Instructions

Before you install this product, read the safety information in the 

Lenovo 

System Enterprise Chassis

 

Types 7893, 8721, and 8724

 

Installation and 

Service Guide

.

Flex 

2.2

 

2.4

 

2.3

Note:

1. Make sure that the bottom edge of the chassis rail is aligned with the bottom U that
 you want the chassis to rest on.  
2. If you misalign the chassis rail, press the locking hooks release or squeeze the locking hooks
on the chassis rail, slide the posts out of the holes, and try again.   
3. Make sure that the chassis rail posts protrude through the holes
on the front EIA flange.   

Note:

 For detailed instructions, see the 

Lenovo Flex System Enterprise Chassis

Types 7893, 8721, and 8724 Installation and Service Guide.

2.5

Pull the chassis rail forward and insert the posts on the front of the chassis rail into the
holes on the front EIA flange until it snaps into place. Repeat steps 2.4 and
2.5 for the right chassis rail.

Verify the shipment contents:

1.2

  Become familiar with the chassis components. The following modules are standard:

One 

System Chassis Management Module (CMM), two or more power supplies, six or more fan modules, and two fan logic modules. The chassis might

also include one or more compute nodes, storage nodes, and a management node. The features or modules that you receive might differ from the contents
shown in Figures 1 and 2, depending on what you ordered (see Figures 1 and 2).

Flex 

Learn more about the Lenovo Flex System Enterprise Chassis through the
learning modules at
http://pic.dhe.ibm.com/infocenter/flexsys/information/index.jsp.
This site also contains the Flex System product documentation.

 

Position the left chassis rail in the selected location on the rear of the rack.
Align the posts on the chassis rail with the corresponding holes on the rear EIA 
flange. Insert the posts on the rear of the chassis rail through the holes on
the rear EIA flange until the hooks snap into place. 

Rear EIA
flange

1.3

 

 66.2 kg

(146  lbs)

 220.4 kg (468 lbs)

 44.90 kg (99 lbs)

(14X)

(7X)

 (6X)

 (4X)

 (10X)

or

I/O

To decrease the weight and make the chassis easier to install in a rack, remove
components from the chassis. Make a note of each component location so that
the component can be reinstalled in the same location. Press on the colored 
latch and pull on the handles to remove the components. You can also remove 
the shelves from the chassis to reduce the weight further.    

4. Install an M5 combi-head screw in each end of the rail.
Use the lower threaded hole on the front and the upper
threaded hole on the rear.  

Figure 2. Rear view of the Lenovo Flex System Enterprise Chassis

Power-
supply
bay 6

Power-
supply
bay 5

Power-
supply
bay 4

Fan
bay 10

Fan
bay 9

Fan
bay 8

Fan
bay 7

Fan
bay 6  

Fan logic
bay 2

I/O bay 1

Power-supply
bay 1

I/O bay 3

Power-
supply
bay 3

I/O bay 2

Fan
bay 5

I/O bay 4

CMM
bay 2

Power-
supply
bay 2

Fan
bay 4

Fan
bay 3

Fan logic
bay 1

Fan
bay 2

Fan
bay 1

CMM
bay 1

M5 clip nut

Front of rail

Rear of rail

Locking 
hooks
release

LEFT FR

ONT

Front EIA 
flange

LEFT FR

ONT

Retract both chassis rails, if they are not already retracted.

LEFT FR

ONT

Figure 1. Front view of the Lenovo 

System Enterprise Chassis

Flex

 

Bay 1

Bay 5

Bay 3

Bay 7

Bay 11

Bay 9

Bay 13

Bay 2

Bay 6

Bay 4

Bay 8

Bay 12

Bay 10

Bay 14

Information
panel

To access the lower chassis components, loosen the Sanstrap stretch band
on the bottom tray and fold the bottom tray flaps down.

M5 combi-head
screw (black)

Posts

Hooks

Threaded hole

Hooks

Posts

Threaded hole

Note:

 Do not cut the Sanstrap stretch band on the bottom tray.

10 M5  x 16 combi-head screws (black)
8 M5  x 16 captive-washer screws (silver)
12 M5 clip nuts - 74F1823
12 M5 cage nuts - 81Y2820
1 lower shipping bracket - 81Y2988
1 left shipping bracket - 81Y2986
1 right shipping bracket - 81Y2991
4 chassis lift handles
1 power cable per power supply
1 Sanstrap stretch band

Accessory kit

Rack installation 
template

10 hook-and-loop strips - 51H9502
8 M5  x 16 
1 left chassis-mounting rail 
1 right chassis-mounting rail

combi-head screws (4 extra, black)

Rail installation kit - 88Y6763

Accessory kit

Rail installation kit

Flex System chassis

Sanstrap stretch band

M5 cage nut

2  

Install the Lenovo
Enterprise Chassis in a rack 

 Flex System

• You will need at least 10U of available space to install the Lenovo Flex
   System Enterprise Chassis. 

2.1

  Remove the rack door, if one is installed on the rack. 

M5 combi-head
screw (black)

Lenovo Flex System Enterprise Chassis
Rack installation template

Enterprise Chassis Documentation CD
Important Notices

 document 

Statement of Limited Warranty

ode labels 

N

Documentation kit

Align the rack template with the holes in the EIA flange (internal to rack).
For EIA flanges with square holes, install M5 cage nuts from the accessory 
kit in the holes that are indicated on the template. If the EIA flanges have 
round holes, install the M5 clip nuts from the accessory kit instead of the 
M5 cage nuts.

Note:

 Install cage nuts or clip nuts on the front and back EIA flanges.

• Make sure that there is sufficient room in front of the front EIA flange to
   provide minimum bezel clearance of 50 mm (1.97 inches).

• 
   EIA flanges to 719 mm (28.3 inches) outside to outside.

If you have an adjustable rack, set the distance between the front and rear

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