EMC CX3-10 User manual

This document explains how to install CX3-series hardware in cabinets

that conform to the National Electrical Manufacturer’s Association

(NEMA) standards for 19-inch cabinets (in which the left and right

mounting channels are 19 inches apart). It covers mounting hardware

for SPS, SPE3, and DAE3P components, and describes how to cable the

system to AC power and set up the back-end (disk I/O) bus. In most

cases, the illustrations and examples refer to standard cabinets that are

40U tall.

Topics are:

◆Device placement requirements......................................................... 1

◆Device height requirements................................................................ 5

◆Power requirements............................................................................. 4

◆Installing a 1U storage processor enclosure (SPE3) in a cabinet.... 8

◆Installing a 1U SPS tray and SPS units in a cabinet....................... 13

◆Installing a 3U disk enclosure (DAE3P) in a cabinet..................... 20

◆Setting up an installed storage system............................................ 28

Note: Instructions for adding switches to a storage system are included in the

device-specific documentation that accompanies the switch.

Device placement requirements

This document provides the steps required to install rails and enclosures

in both EMC and non-EMC cabinets. Unless otherwise specified, the

illustrations depict the 40U-C cabinet.

EMC

Rails and Enclosures

(CX3-10 Class and CX3-20 Class Storage Systems)

Field Installation Guide

P/N 300-004-546

REV A03

July 20, 2007

2EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide

Device placement requirements

Figure 1 Typical cabinet front and rear views

Before attaching the mounting rails or trays in any cabinet, you must

decide where to put them. Where you install the devices depends on

the kinds of devices you will install and the height of each device.

Position in the cabinet

Devices with internal cooling fans or blowers that move air from

front to back (or vice versa) and not from beneath or above have no

special cooling requirements that direct placement in the cabinet. All

of the storage systems and enclosures mentioned in this document

have fans or blowers that move air from front to back.

EMC220

nt R

EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide 3

Device placement requirements

In most cases, you should install devices starting at the bottom of the

cabinet. Installing bottom to top offers the advantages of stability and

convenient cable access from beneath.

We recommend the device placement configuration shown (from the

rear) in Figure 2.

Figure 2 Sample device placements with an SPE3

Note: Place the disk enclosure (DAE3P) that contains specially marked "array

software" disks 0-4 as close as possible to the CX3-series storage processor

enclosure (SPE3). In most cases, install that first enclosure (sometimes called

the DAE3P-OS, or vault) directly above the standby power supply (SPS).

Stack additional DAE3Ps directly above the DAE3P-OS.

EMC3477

EXPPRI

EXP

PRI

EXPPRI

EXP

PRI

SPE3

1U SPS

DAE3P-OS

4EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide

Power requirements

Review your plan to make sure all devices will fit in the cabinet. It is

also important to verify cabling lengths before installing any

enclosure.

Power requirements

Power distribution must support the number of outlets required for

the device and the device power rating.

Use the published technical specifications and device rating labels to

determine the current draw of each device in your cabinet and

calculate the total. Use the following values to calculate current draw

for CX3-series storage-system components.

Note: These are maximum ratings for a class family, to guide the

sizing of power distribution components at the rack level. Since model

configurations and drive types vary, they may not be appropriate to

estimate typical power consumption.

Note: For high availability, the left and right sides of any rack or cabinet must

receive power from separate branch feed circuits.

CX3-10//20

1000 W SPS

SPE3

(CX3-10)

SPE3

(CX3-20)

DAE3P

disk enclosure

0.2 A@ 100 V AC

0.1 A @ 200 V AC

2.4 A @ 100 V AC

1.5 A @ 200 V AC

3.3 A @ 100 V AC

1.9 A @ 200 V AC

4.4 A @ 100 V AC

2.2 A @ 200 V AC

EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide 5

SPE3, DAE3P, and SPS operating limits

The ambient temperature specification is measured at the front bezel

inlet. The site must have air conditioning of the correct size and

placement to maintain the specified ambient temperature range and

offset the heat dissipation listed below.

IMPORTANT: For systems mounted in a cabinet, the operating limits listed

above must not be exceeded inside the closed cabinet. Equipment mounted

directly above or below an SPE3 storage system must not restrict the

front-to-rear airflow of the storage system. The cooling airflow through the

storage system is approximately 64 cubic feet per minute (cfm). Cabinet

doors must not impede the front-to-rear airflow. The cabinet must exhaust air

at a rate that is equal to or greater than the sum of the exhaust rates of all the

equipment mounted in the cabinet. For example, in a cabinet containing one

SPE3 (64 cfm) and six DAE3Ps (55 cfm), the cabinet must exhaust at least

64+6x55 cfm, which equals 394 cfm.

Device height requirements

Device height requirements and cabinet mounting measurements are

based on NEMA units (U’s). See Table 1.

Requirement Description

Ambient temperature 10°C to 40°C (50°F to 104°F)

Temperature gradient 10°C/hr (18°F/hr)

Relative humidity 20% to 80% noncondensing

Elevation 2438 m (8,000 ft) at 40°C

3077 m (10,000 ft) at 37°C

Table 1 NEMA unit heights

Number of U’s Actual height

1U 1-3/4 inches

2U 3-1/2 inches

3U 5-1/4 inches

4U 7 inches

6EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide

Device height requirements

The predrilled holes in the cabinet channels are based on the U

measurement. The holes are predrilled at distances of 1/2 inch, 5/8

inch, 5/8 inch (totaling one U), then 1/2 inch, 5/8 inch, 5/8 inch

(another U), and so on. On EMC 40U and 40U-C cabinets, the 1U

increments are marked by a horizontal line or small hole in the

channel. See Figure 3 on page 7 on the next page.

Table 2 lists the vertical space requirements of typical rackmounted

devices.

Table 2 Height requirements of typical devices

Height

Number of

cabinet channel holes Typical device example

1U, 1-3/4 in, 45 mm 3 CX3-10, CX3-20 and

CX3-40 SPS, CX3- series

SPE3, some switches

2U, 3-1/2 in,90 mm 6 CX3-80 SPS,

some switches

3U, 5-1/4 in, 133 mm 9 EMC DAE2P, DAE3P

4U, 7 in, 178 mm 12 CX3-series SPE2

EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide 7

Device height requirements

Figure 3 U increments in a cabinet front channel

EMC2205

1U (1.75-in.)

Increment

8EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide

Installing a 1U storage processor enclosure (SPE3) in a cabinet

Follow the steps below to install a 1U SPE3 device in a standard 19"

NEMA cabinet.

Enclosure mounting kit

Before you start, be sure you have all the materials listed in Table 3.

Tools are not part of your purchased enclosure assembly.

Installing the adjustable rails

1. Locate and unpack the rail kit that accompanied your enclosure.

The front edge of each rail is stamped L or R for left and right

sides, when they face the cabinet front.

Table 3 Enclosure mounting kit materials

Component Use

2 adjustable rails (20.5-34 inches) Attach front to back on either side

between NEMA channels in a standard

19" cabinet

Ten (10) Phillips M5 12.7 mm screws Attach the rail mounting hardware in a

40U cabinet

2 latch brackets

Secure 1U bezel in 40U cabinets

1U bezel (front rack panel) with keys EMI shielding

EMC3429

(L)

(R)

EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide 9

Installing a 1U storage processor enclosure (SPE3) in a cabinet

2. From the front of the cabinet, insert the alignment pin on the right

mounting rail assembly into the middle hole of the selected 1U

space on a rear channel. Figure 4 shows the correct channel holes

for the alignment pins.

Figure 4 Aligning pins in a 1U section on the cabinet rear rails

Alignment Pin

Here

EMC29

10 EMC Rails and Enclosures (CX3-10 Class and CX3-20 Class Storage Systems) Field Installation Guide

Installing a 1U storage processor enclosure (SPE3) in a cabinet

Refer to Figure 5 as you perform steps 3through 6.

3. Pull the adjustable rail forward to the inner side of the front

channel (the surface facing the rear of the cabinet), and align the

three holes on the rail with those in the channel.

4. Secure the rail to the front channel using one of the provided

screws at the top hole of the rail. Leave the screw slightly loose to

allow for adjustment after you install the enclosure.

5. Repeat steps 2through 4on the left side, with the left rail.

6. From the rear of the cabinet, use two of the provided screws to

secure each rail to the rear channel. Tighten the screws.

Figure 5 Installing the adjustable mounting rails

EMC3430

Right rear

Screw (2)

Mounting rail Alignment pin

Left front

Screw (1)

Mounting rail

Alignment pin

Adjustable rail

Front

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