Seagate Exos E 2U12 Series Operating manual

Exos® E 2U12, 2U24, 5U84 Series
Hardware Installation and
Maintenance Guide
Abstract
This guide describes initial hardware setup for Seagate Exos E 2U12, 2U24, 5U84 Series controller enclosures and disk
enclosures. It also describes removal and installation of customer-replaceable components. The guide is intended for
use by storage system administrators familiar with servers and computer networks, network administration, storage
system administration and configurations, storage area network management, and relevant protocols.
Part Number: 204380800-00
Revision: A
Published: December 2022

© 2022 Seagate Technology LLC or its affiliates. All rights reserved. Seagate, Seagate Technology, and the Spiral logo are registered trademarks of Seagate Technology LLC in
the United States and/or other countries. Exos is a trademark of Seagate Technology LLC or one of its affiliated companies in the United States and/or other countries. All other
trademarks or registered trademarks are the property of their respective owners. When referring to disk capacity, one gigabyte (GB) equals one billion bytes, one terabyte (TB)
equals one trillion bytes, and one petabyte (PB) equals one thousand terabytes. Your computer's operating system may use a different standard of measurement and report a
lower capacity. In addition, some of the listed capacity is used for formatting and other functions, and thus will not be available for data storage. All coded instruction and
program statements contained herein remain copyrighted works and confidential proprietary and trade secret information of Seagate Technology LLC or its affiliates. Any use,
derivation, disassembly, reverse engineering, dissemination, reproduction, or any attempt to modify, prepare derivative works, reproduce, distribute, disclose copyrighted
material of Seagate Technology LLC, for any reason, in any manner, medium, or form, in whole or in part, if not expressly authorized, is strictly prohibited. Seagate reserves the
right to change, without notice, product offerings or specifications.
Regulatory and compliance information
For the latest regulatory and compliance information see www.seagate.com/support/data-storage-systems/. Scroll down to the Compliance, Safety and Disposal Guide link.

Contents 3
Contents
1 Introduction 8
Knowledge prerequisites 8
Product documentation and support 8
Intended audience 9
2 System overview 10
Expansion enclosure components 10
Expansion enclosure chassis 11
2U enclosure components 11
5U enclosure components 13
Optional components 16
3 Initial install preparations 18
Installation checklist 18
Complete installation prerequisites 19
4 Installation of 2U enclosures 21
Unpack and prepare the 2U enclosure 21
Install the 2U rackmount rail kit 22
Mount the 2U enclosure into the rack cabinet 25
Populate the 2U enclosure 27
Test enclosure electrical earth connection 28
Route 2U enclosure data cables and power cords 28
Route 2U enclosure host cables and expansion data cables 29
Route 2U enclosure power cords 30
5 Installation of 5U enclosures 32
Unpack and prepare the 5U enclosure 32
Install the 5U rackmount rail kit 33
Mount the 5U enclosure into the rack cabinet 37
Access a drawer 40
Populate the 5U enclosure 41
Test enclosure electrical earth connection 42
Route 5U enclosure data cables and power cords 42
Route 5U enclosure host cables and expansion data cables 43
Route 5U enclosure power cords 44
6 Operation of 2U enclosures 46
Apply power to the 2U enclosure 46
Remove power from the 2U enclosure 47
Set the unit identification number 47

Interpret system LEDs 47
Interpret 2U12 and 2U24 operator's panel LEDs 48
Interpret SAS 12Gb/s expansion input/output module LEDs 49
7 Operation of 5U enclosures 51
Apply power to the 5U enclosure 51
Remove power from the 5U enclosure 52
Set the unit identification number 52
Interpret system LEDs 52
Interpret 5U enclosure operator's panel LEDs 53
Interpret drawer LED panels 54
Interpret SAS 12Gb/s expansion input/output module LEDs 55
8 Hardware installation and configuration issues 57
Address initial start-up issues 57
Interpret storage and expansion enclosure fault LEDs 58
2U12 and 2U24 enclosure fault LEDs 58
5U84 enclosure fault LEDs 60
Identify 2U enclosure fault conditions 65
Identify 5U enclosure fault conditions 65
Isolate hardware and connectivity faults 66
Isolate system application faults 67
Take corrective action for 2U enclosures 68
Take corrective action for 5U enclosures 69
9 In-service field maintenance for 2Uenclosures 73
Replace a 2U enclosure drive module in its carrier 74
Replace a 2U enclosure input/output module 76
Replace a 2U power cooling module 78
10 In-service field maintenance for 5Uenclosures 82
Replace a 5U enclosure drive module in its carrier 83
Replace a 5U enclosure input/output module 87
Replace a 5U fan cooling module 90
Replace a 5U power supply unit 91
A Technical specifications 95
B Standards and regulations 97
International standards 97
WEEE recycling 97
Index 98
4Contents

Contents 5
Figures
Figure 1 2U12 and 2U24 front panel area 12
Figure 2 2U12 and 2U24 rear panel area 13
Figure 3 5U84 front panel area 14
Figure 4 5U84 rear panel area 15
Figure 5 Profile and top views of fully populated 5U84 drawers 16
Figure 6 2U12 and 2U24 expansion enclosure packaging, shown without plastic for clarity 21
Figure 7 2U enclosure outer rail components 23
Figure 8 Attachment of front mount bracket to front rack cabinet posts 24
Figure 9 Adjustment of rail length to fit rack cabinet 24
Figure 10 Attachment of rear mount bracket to rear rack cabinet posts 25
Figure 11 Alignment between 2U chassis and rails (removed rear components for clarity) 26
Figure 12 Installation of 2U rear screw to secure chassis to rail 27
Figure 13 Sample reverse cabling method among the host system and 2U expansion modules 30
Figure 14 Sample invalid loop (in red) among the host system and 2U expansion modules 30
Figure 15 2U power cord routing to independent power distribution units 31
Figure 16 Default belt straps already around the 5U expansion enclosure 32
Figure 17 5U left and right rail components 35
Figure 18 Insertion of 5U front mount bracket screw 36
Figure 19 Insertion of 5U rear mount bracket screws 36
Figure 20 Alignment between 5U chassis and rails, minus rear components for clarity 38
Figure 21 Secure chassis operator's panel to rack posts 39
Figure 22 5U rear chassis connection to outer rails, detail, minus rear components for clarity 39
Figure 23 Safety lock to release left drawer slide rail (lower drawer used for relational clarity) 40
Figure 24 Carrier latch features 41
Figure 25 Release latch open and unlocked 41
Figure 26 Release latch properly locked 41
Figure 27 Sample reverse cabling method among the 5U host system and expansion modules 44
Figure 28 Sample invalid loop (in red) among the 5U host system and expansion modules 44
Figure 29 5U power cord routing to independent power distribution units 45
Figure 30 2U12 and 2U24 operator's panel LEDs 49
Figure 31 SAS 12Gb/s expansion input/output module LEDs 50
Figure 32 5U84 operator's panel LEDs 54
Figure 33 5U84 drawer LED panel 55
Figure 34 SAS 12Gb/s expansion input/output module LEDs 56
Figure 35 2U12 and 2U24 operator's panel fault LEDs 58
Figure 36 2U12 and 2U24 fault LEDs on carrier bezel 59
Figure 37 SAS 12Gb/s expansion module fault LEDs 59
Figure 38 Power cooling module fault LEDs 60

Figure 39 5U84 operator's panel fault LEDs 61
Figure 40 5U84 drawer fault LEDs on drawer LED panel 62
Figure 41 Drive fault LED on carrier bezel 62
Figure 42 SAS 12GB expansion module fault LEDs 63
Figure 43 Fan cooling module fault LEDs 64
Figure 44 Power supply unit fault LEDs 64
Figure 45 2U12 and 2U24 fault LEDs on carrier bezel 74
Figure 46 Removal of 2U12 and 2U24 drive in carrier 75
Figure 47 Replacement with open 2U12 and 2U24 carrier handle 76
Figure 48 SAS 12Gb/s expansion input/output module LEDs 77
Figure 49 Input/output module removal, upper 78
Figure 50 Replacement input/output module 78
Figure 51 Power cooling module removal 80
Figure 52 Replacement power cooling module 80
Figure 53 Drive fault LED on carrier bezel 83
Figure 54 Operator's panel 84
Figure 55 Drawer panel 84
Figure 56 Drawer release and access 84
Figure 57 Carrier latch features 85
Figure 58 Removal of drive in its carrier 85
Figure 59 Replacement of drive in its carrier 86
Figure 60 Release latch open and unlocked 86
Figure 61 Release latch properly locked 86
Figure 62 Safety lock to release left drawer slide rail of lower drawer 87
Figure 63 SAS 8Gb/s input/output module LEDs 88
Figure 64 Input/output module removal, left 89
Figure 65 Replacement input/output module 89
Figure 66 Fan cooling module fault LEDs 90
Figure 67 Fan cooling module removal 91
Figure 68 Replacement fan cooling module 91
Figure 69 Power supply unit fault LEDs 92
Figure 70 Power supply unit removal 93
Figure 71 Replacement power supply unit 93
6Contents

Contents 7
Tables
Table 1 Expansion enclosure variations 10
Table 2 Installation checklist tasks 18
Table 3 Fault LED prioritization 48
Table 4 Fault LED prioritization 53
Table 5 2U enclosure non-fault conditions 65
Table 6 5U enclosure non-fault conditions 66
Table 7 2U enclosure corrective action for fault conditions 68
Table 8 5U enclosure corrective action for fault conditions 69
Table 9 2U enclosure time limits for FRU replacement 73
Table 10 5U enclosure time limits for FRU replacement 82
Table 11 Expansion enclosure dimensions 95
Table 12 Expansion enclosure FRU weights 95
Table 13 Environmental specifications 95
Table 14 Power specifications 96
Table 15 Standard and approvals 97

8Chapter 1 Introduction
1 Introduction
Seagate Exos E expansion enclosures combine strong performance with high reliability, flexibility, and manageability. Powerful
and compact, the series expandable storage solution supports business with high-capacity and high-availability options.
The system is designed for high availability (HA), with no single point of failure for data or power. Input/output modules
(IOMs) are Storage Bridge Bay (SBB) v2.1 compatible for interconnects, power budgets and rails, form factors, and footprints.
WARNING! Heed all warnings and cautions on labeling and throughout this guide to reduce risk of personal injury or
damage to equipment. You must adhere to all safety requirements in this document. Some relate to the entire system, some to
the rack, some to the storage or expansion enclosure, and others to the FRUs within it.
Knowledge prerequisites
Make sure you have the appropriate knowledge base prior to product installation or service.
lServer system administration
lStorage system configuration
lStorage area network (SAN) management
lFibre Channel (FC) protocol
lSerial Attached SCSI (SAS) protocol
lEthernet protocol
Product documentation and support
To obtain documentation, videos, and product information, visit www.seagate.com/support/data-storage-systems/.
Content description Document Seagate QR codes
Enhancements, known issues, and updates Release Notes Documentation,
Support
2U documentation,
support
5U documentation,
support
Installation of the rail kit and enclosure into a rack Rackmount Guide*
Initial installation of hardware and component replacement Hardware Installation and Maintenance Guide
Regulatory compliance, safety, and disposal information Compliance, Safety, and Disposal Guide
*Printed document included in the shipkit

Chapter 1 Introduction 9
Intended audience
This guide is for software integration providers, storage installation professionals, and system administration personnel.

10Chapter 2 System overview
2 System overview
The Seagate Exos E expansion series enclosures consist of a sheet metal chassis that contains an integrated midplane and
module runner system. You can mount the expansion enclosure into a standard 19-inch rack cabinet, occupying either two
(2U) or five (5U) EIA rack space units. All plug-in modules are hot-swappable, but you must adhere to all safety precautions
and time limitations.
Type Typical set of plug-in modules Maximum expansions
2U12 expansion enclosure 2U chassis and rackmount railkit Up to 12
12 3.5-inch large form factor (LFF) drive modules in carriers (DDICs)
Two input/output modules (IOMs)
Two power cooling modules (PCMs)
2U24 expansion enclosure 2U chassis and rackmount railkit Up to 6
24 2.5-inch small form factor (SFF) DDICs
Two input/output modules (IOMs)
Two power cooling modules (PCMs)
5U84 expansion enclosure 5U chassis and rackmount railkit:
Contains two drawers, each with 42 drive modules
Up to 4
84 3.5-inch or 2.5-inch drive modules with adapters in carriers
Two input/output modules (IOMs)
Five fan cooling modules (FCMs)
Two power supply units (PSUs)
Four sideplane printed circuit boards (PCBs), two per drawer
Authorized service personnel only
Table 1 Expansion enclosure variations
Expansion enclosures can be configured as either an EBOD or a JBOD. An EBOD is an expansion enclosure attached to a
controller enclosure (RBOD). A JBOD is an expansion enclosure attached directly to a server that is equipped with a SAS HBA
or SAS RAID adapter.
CAUTION Make sure you are not connected to power at any time during installation procedures.
CAUTION Only operate the expansion enclosure in a dust-free environment to meet temperature control and airflow
requirements.
Expansion enclosure components
All Seagate Exos E expansion enclosures have 2 main access points:
1. Front panel area — Contains the operator's (ops) panel and access to drive modules in their carriers (DDICs)
a. 2U enclosures — Direct access to DDICs
b. 5U enclosures — Access to DDICs by opening the related drawer
2. Rear panel area — Contains input/output modules and methods for cooling and powering the expansion enclosure

Chapter 2 System overview 11
Expansion enclosure chassis
Chassis sheet metal is bonded and riveted together and free from non-conductive coatings. Each chassis is designed
specifically for mounting in a rack cabinet.
2U enclosure components
The front panel area hosts an operator's panel and the drive modules.
l2U12— Contains 3.5-inch large form factor (LFF) drives installed in keyed carriers, inserted into horizontal slots, and
logically numbered in rows from 0 to 11 from left to right, from top to bottom
l2U24— Contains 2.5-inch small form factor (SFF) drives installed in keyed carriers, inserted into vertical slots, and logically
numbered from 0 to 23 from left to right

12Chapter 2 System overview
1234 5
678910
1234 5
678910
Item Description Function
1 Input button Selects and sets UID when combined with system Locate command
2 Drive 0 Responds to commands for drive logically numbered "0"
3 Release latch, drive module Allows drive module insertion onto and removal from the midplane and slot
4 Anti-tamper lock, drive module Prevents drive module removal when locked
5 Drive 3 Responds to commands for drive logically numbered "3"
6 Operator's (ops) panel on left rack ear
flange
Connects to midplane, provides users with expansion enclosure information and
status
7 Drive 8 Responds to commands for drive logically numbered "8"
8 Status LEDs, drive module Provides users with drive module status
9 Drive 11 Responds to commands for drive logically numbered "11"
10 Right rack ear cover Acts as cosmetic cover over rack flange
Figure 1 2U12 and 2U24 front panel area

Chapter 2 System overview 13
The rear panel area hosts modules designed for power, thermal cooling, and host connectivity.
123
456
Item Description Function
1 Power cooling module (PCM) Provides redundant regulation of power, temperature, and airflow
2 PCM release latch Latches or unlatches PCM from midplane
3 Input/output module (IOM)
Provides data redundancy, acts as the nerve center of the expansion enclosure
4 Inverted IOM
5 Inverted PCM status LEDs Provides users with PCM status
6 Inverted PCM power switch Switches power on or off
Figure 2 2U12 and 2U24 rear panel area
5U enclosure components
The 5U84 chassis retains two sliding drawers, so has drawer panels that augment the operator's (ops) panel on the left rack
ear flange. Each drawer has its own set of dedicated connectors behind the midplane that allow continuous operation, even if
the drawer is extended to the fully open service position or closed with the drawer latch engaged.
The front panel area is the primary physical user interface. Closely watch the ops and drawer panels for status.

14Chapter 2 System overview
1234 5
678910
Item Description Function
1 Operator's (ops) panel Connects to midplane, provides users with expansion enclosure information and status
2 Drawer left sideplane indicators Registers activity for the related drive in its carrier (DDIC) and controller for the drawer's left
sideplane
3 Left pull handle in recessed
pocket
Provides user access to DDICs contained in drawer
4 Drawer left side anti-tamper lock Prevents drawer access when locked
5 Top drawer: Drawer 1 Contains DDIC slots logically numbered from 0 to 41
6 Bottom drawer: Drawer 2 Contains DDICslots logically numbered from 42 to 83
7 Drawer right side anti-tamper
lock
Prevents drawer access when locked
8 Right pull handle in recessed
pocket
Provides user access to DDICs within the drawer
9 Drawer right sideplane indicators Registers activity for the related DDIC and controller for the drawer's right sideplane
10 Drawer latch Latches the drawer closed when properly engaged
Figure 3 5U84 front panel area

Chapter 2 System overview 15
The rear panel area provides you access to modules designed for power, thermal cooling, and host connectivity.
1 2 3 4 5
67 8 9 10
Item Description Function
1 Input/output module (IOM) Provides data redundancy and is the nerve center of the expansion enclosure
2 IOM release latch
Provides full contact with midplane or releases IOM for inspection and service
3 IOM release latch and handle
4 Fan cooling module (FCM) Provides redundant regulation of temperature and airflow
5 FCM release latch
Provides full contact with midplane or releases FCM for inspection and service
6 FCM pull handle
7 Power supply unit (PSU) Provides redundant regulation of power
8 PSU release latch
Provides full contact with midplane or releases PSU for inspection and service
9 PSU pull handle
10 PSU power switch Powers on or off the expansion enclosure
Figure 4 5U84 rear panel area
Two sliding drawers hold DDICs and their related sideplanes.
lTwo drawers each can contain 42 DDICs. Drawer slides lock the drawer in the fully open service position, so require
release latch activation to close the drawer.
lDDICs slide into 42 slots in each drawer. The upper drawer, Drawer 1, contains slots logically numbered from 0 to 41 in rows
moving from top to bottom, then from left to right. The lower drawer, Drawer 2, contains slots logically numbered from 42
to 83, following the same pattern.

16Chapter 2 System overview
1 2
3
4 5 6 78 9 10
11 12 13 14
Item Description Function
1 Drawer front with keyed anti-tamper lock and 2
drawer latches
Prevents or provides access to DDICs, contains dual drawer panel LEDs for drive
activity and fault status
2 Right sideplane Registers DDIC activity and fault conditions for the primary host path
3 Top drawer: Drawer 1 Contains slots logically numbered from 0 to 41
4 Operator's (ops) panel on left rack ear flange Connects to midplane, provides users with expansion enclosure information and
status
5 Bottom drawer: Drawer 2 Contains slots logically numbered from 42 to 83
6 Drawer slide Supports full extension to service position and access to DDICs
7 Midplane Connects modules to system controls (Authorized service personnel only)
8 Input/output module (IOM) Provides data redundancy and acts as the nerve center of the expansion
enclosure
9 Fan cooling module (FCM) Provides redundant regulation of temperature and airflow
10 Power supply unit (PSU) Provides redundant regulation of power
11 Drive module in its carrier (DDIC) Provides redundant data storage
12 Locking mechanism Secures full connection of DDIC
13 Right rack ear cover Cosmetic
14 Cable management system Protects cabling associated with the related drawer
Figure 5 Profile and top views of fully populated 5U84 drawers
Optional components
Occasionally, you may configure the expansion enclosure to operate without all of its components. The most common reason
is to perform in-field maintenance. Temperature and airflow requirements for 2U enclosures mandate you immediately use
blanks to replace modules you remove and adhere to all specified time limitations for replacement.

Chapter 2 System overview 17
lCarrier blank— For 2U enclosures not fully populated, occupies any empty drive slot to secure proper airflow
lController blank— For 2U enclosures configured with a single controller, occupies the empty controller slot to secure
proper airflow

18Chapter 3 Initial install preparations
3 Initial install preparations
Each expansion enclosure installation requires the same amount of preparation to successfully mount it into your industry-
standard rack cabinet of up to 1.2m in depth.
WARNING! Heed all warnings and cautions on labeling and throughout this guide to reduce risk of personal injury or
damage to equipment. You must adhere to all safety requirements in this document. Some relate to the entire system, some to
the rack, some to the storage or expansion enclosure, and others to the FRUs within it.
CAUTION Use only power cords supplied in the installation kit or those that meet product specifications.
IMPORTANT Only a qualified service technician should perform the installation.
Installation checklist
Read this entire section before you begin. You must adhere to all safety requirements prior to and during installation.
WARNING! Do not attempt to install the 5U expansion enclosure into the rack cabinet with drive modules preloaded in
the slots. Serious injury and damage could result. Unload any drive modules in enclosure slots to a static-protected area. Do
not further lighten the enclosure by removing other components.
Use this checklist, performing each task only in the sequence presented after successful completion of the prior step.
Step Task Reference
1 Complete all installation prerequisites Identified below
2 Unpack the enclosure "Unpack and prepare the 2U enclosure" on page21
"Unpack and prepare the 5U enclosure" on page32
3 Prepare the site for installation of the enclosure into the rack
cabinet
"Unpack and prepare the 2U enclosure" on page21
"Unpack and prepare the 5U enclosure" on page32
4 For rackmount installation, temporarily move any drive modules not installed in the enclosure to a static-protected area
5 Install the rackmount kit in the rack cabinet "Install the 2U rackmount rail kit" on page22
"Install the 5U rackmount rail kit" on page33
6 Mount the enclosure into the rack cabinet "Mount the 2U enclosure into the rack cabinet" on page25
"Mount the 5U enclosure into the rack cabinet" on page37
7 Install drive modules in carriers (DDICs) in the enclosure "Populate the 2U enclosure" on page27
"Populate the 5U enclosure" on page41
8 (Optional) Install any additional expansion enclosures Follow same process for chassis installation up to this step
9 Test for safety electrical earth connection "Test enclosure electrical earth connection" on page42
10 Connect all host and any expansion data cables "Route 2U enclosure data cables and power cords" on page28
"Route 5U enclosure data cables and power cords" on page42
11 Connect all power cords
Table 2 Installation checklist tasks

Chapter 3 Initial install preparations 19
lSite preparation
1. Use the installation checklist.
2. Clear the site for installation and secure a static-protected area.
lBefore enclosure installation
1. Unpack the enclosure in a clear area, using appropriate safety precautions.
2. Temporarily set aside all drives in carriers (DDICs) into a static-protected area, regardless of how your enclosure or
drives ship.
3. Follow all instructions for installing the provided rackmount rails into the rack cabinet.
4. Review all related warnings before mounting the enclosure into the rack.
lEnclosure installation
1. Move the enclosure onto a suitable mechanical lift.
a. For the 2U enclosures, have two people move the enclosure to a lift.
b. For the 5U enclosures, have three people use the provided belt straps to move the enclosure to a lift.
2. Use a mechanical lift for positioning the enclosure and mounting it into the rack cabinet. Do not use a vacuum lift. To
maintain personal and equipment safety, do not use any other method to support the weight of the enclosure during
installation or maintenance.
3. Maintain adequate enclosure clearances, both front and back.
lBefore FRU installation
1. Prior to handling the DDICs, make sure you are static-compliant.
2. Confirm you can easily reach the slots and you can visually inspect the installation of each DDIC in the enclosure, while
safely maintaining your balance.
lDDIC installation
1. Only after you securely mount the enclosure in the rack can you retrieve the DDICs from their static-protected area.
2. Install all DDICs into the proper module slots.
lPrior to testing the enclosure
1. Examine cables and make sure connections are completely secure on both ends.
2. Adhere to all electrical safety guidelines.
Complete installation prerequisites
The rackmount rails are designed to bear the maximum weight of the expansion enclosure when it is properly mounted in a
standard rack cabinet. You can install multiple expansion enclosures in a single rack cabinet.
CAUTION You must use only the supplied rail kit and related mounting hardware.
To complete installation prerequisites:
1. Prepare the host system for the installation by obtaining access to the following items:
a. A host computer with the correct firmware, BIOS, and drivers
b. A functioning switch connected to a host computer

20Chapter 3 Initial install preparations
c. Tested, good cables for host connection that meet enclosure requirements
d. The provided power cords, which meet power specifications
2. Familiarize yourself with system configuration requirements and the enclosure components.
3. Obtain the following:
a. An anti-static wrist or ankle strap for handling static-sensitive components
b. A static-protected environment for temporary storage of the enclosure and the FRUs
c. A Torx screwdriver, 6-in length, with T10 and T20 bits
d. A flat-bladed screwdriver, 6-in length
e. A Philips screwdriver, 6-in length
f. A mechanical lift with sufficient clearance and capable of safely lifting the enclosure without drive modules
4. Ensure the rack cabinet is suitable for use with the enclosure.
a. A rack cabinet capable of holding 2U or 5U form factors that meets all UL and IEC safety requirements, leveled in all
planes with respect to each other
b. Adequate clearance in front of the rack cabinet to install the provided rail kit
c. A maximum depth of 884mm (34.81 inches) from back of front post to maximum extremity, excluding cabling and door
closure considerations
d. A rack cabinet that causes a maximum back air pressure of 5 pascals (0.5mm water gauge)
e. A rack cabinet constructed to meet the installed weight capacity for the total number of enclosures in the rack cabinet,
based on the related maximum weight per enclosure
2U12 2U24 5U84
A maximum of 32kg (71 lb) A maximum of 30kg (60 lb) A maximum of 130kg (287 lb)
f. A maximum operating ambient temperature of 35°C (95°F)
5. Secure sufficient staff to assist with the installation. Minimum staff:
a. One qualified service technician for the complete installation procedure
b. One spotter to assist with the lift and to assist with the installation from the rear of the rack cabinet
c. A total of two people (2U) or three people (5U) to unpack the enclosure and move it onto the mechanical lift