HP Rack Storage/12 User manual

HP Rack Storage/12
Installation Guide
HP Part Number D5989-90000
Printed in October 1998

ii
Notice
The information contained in this document is subject to change without notice.
Hewlett-Packard makes no warranty of any kind with regard to this
material, including, but not limited to, the implied warranties of
merchantability and fitness for a particular purpose. Hewlett-Packard shall
not be liable for errors contained herein or for incidental or consequential
damages in connection with the furnishing, performance, or use of this material.
Hewlett-Packard assumes no responsibility for the use or reliability of its software
on equipment that is not furnished by Hewlett-Packard.
This document contains proprietary information that is protected by copyright.
All rights are reserved. No part of this document may be photocopied,
reproduced, or translated to another language without the prior written consent of
Hewlett-Packard Company.
Novell NetWare®is a registered trademark of Novell, Inc. Microsoft®Windows
NT and NTAS®are registered trademarks of Microsoft Corporation. Windows
and Windows 95 are registered trademarks of Microsoft in the U.S. and other
countries. SCO®UNIX®is a registered trademark of The Santa Cruz Operation,
Inc. Banyan®and VINES®are the registered trademarks of Banyan Systems
Incorporated. OS/2®is the registered trademark of the International Business
Machines Corporation.
Hewlett-Packard Company
Network Server Division
Technical Marketing / MS 45S-LE
10955 Tantau Avenue
Cupertino, CA 95014 USA
© Copyright 1998, Hewlett-Packard Company.

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Contents
Safety Precautions...........................................................................................1
1 HP Rack Storage/12 Overview ......................................................................3
Front View......................................................................................................3
Status LEDs...............................................................................................4
Bezel..........................................................................................................4
Drive Cage.................................................................................................4
Hot-Swap Hard Drives................................................................................5
Filler Panels...............................................................................................6
Drive Spacers............................................................................................6
Rear View ......................................................................................................7
Power Switch .............................................................................................7
Power Supplies..........................................................................................8
RS/12 SCSI Card.......................................................................................9
Management Board....................................................................................9
2 Controls, Ports, and Indicators..................................................................11
Front View....................................................................................................11
Chassis Status LEDs................................................................................11
Hard Drive Status Indicators.....................................................................12
Rear View ....................................................................................................12
Power Switch ...........................................................................................13
RS/12 SCSI Card.....................................................................................13
Management Board..................................................................................14
Power Supplies........................................................................................15
Operating and Managing the HP Rack Storage/12 .......................................16
Power On.................................................................................................16
Power Off.................................................................................................17
Managing Disk Arrays..............................................................................17
3 Installing the HP Rack Storage/12 in a Rack..............................................19
Tools Required.............................................................................................20
Installing Rack Nuts......................................................................................20
Installing the Support Rails...........................................................................21
Installing the Chassis....................................................................................22
Installing Components..................................................................................24

Contents
iv
Completing the Installation...........................................................................25
4 Configuring the HP Rack Storage/12 .........................................................27
Simplex Configuration..................................................................................27
Duplex Configuration....................................................................................28
Cluster Configuration....................................................................................29
Power Cabling..............................................................................................30
5 Removing and Installing HP Rack Storage/12 Components.....................31
Replacing a Hot-Swap Hard Drive................................................................31
Preparing the New Hard Drive..................................................................32
Attaching a Drive Spacer .........................................................................32
Removing a Drive Spacer........................................................................33
Removing a Filler Panel...........................................................................34
Removing a Hard Drive............................................................................35
Installing a Hard Disk Drive......................................................................35
Replacing the Hot-swap RS/12 SCSI Card...................................................38
Removing the RS/12 SCSI Card..............................................................38
Removing the Connector Filler Panel.......................................................39
Installing the RS/12 SCSI Card................................................................39
Replacing the Hot-Swap Power Supply ........................................................39
Removing the Power Supply....................................................................40
Separating the Fan Module from the Power Supply..................................41
Attaching the Fan Module to the Power Supply ........................................42
Installing the Power Supply......................................................................42
Replacing the Hot-Swap Management Board...............................................43
Preparing the Replacement Management Board......................................43
Removing the Management Board...........................................................44
Installing the Management Board.............................................................44
Removing the HP Rack Storage/12 from the Rack.......................................44
6 Troubleshooting..........................................................................................47
Checking for General Problems....................................................................47
No System Power.........................................................................................47
Hard Drives Not Responding........................................................................48
RS/12 SCSI Card Not Responding...............................................................49
Management Board Not Responding............................................................49
Appendix A Warranty, Service and Support.................................................51
Warranty......................................................................................................51

Contents
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Service and Support.....................................................................................51
Appendix B Regulatory Information.............................................................53
Restricted Access Location ..........................................................................53
Notice for USA.............................................................................................53
FCC Radio Frequency Emissions Statement............................................53
Notice for Canada: DOC Requirements....................................................53
Appendix C Specifications ...........................................................................55
Environment.................................................................................................55
Power Requirements....................................................................................56
Index ...............................................................................................................57

1
Safety Precautions
When installing the HP Rack Storage/12, always keep the following safety and
environmental issues in mind, especially if you install the NetServer in a non-HP
Rack environment:
Maximum Recommended Ambient Temperature. The maximum
recommended ambient temperature is 35°C (95°F).
Elevated Operating Ambient Temperature. The ambient operating
temperature with a closed or multi-unit rack assembly may exceed the room's
ambient temperature. Make sure that the temperature within the rack itself does
not exceed 35°C (95°F).
Reduced Air Flow. As you mount equipment in the rack, make sure that you
allow enough air flow for safe operation of the equipment.
Mechanical Loading. Uneven mechanical loading within the rack can cause
hazardous conditions. Plan the placement of equipment in the rack to make sure
that this problem does not occur.
Circuit Overloading. Make sure that the total configuration of equipment in the
rack does not overload the supply circuit. To this end, check the nameplate
ratings on all equipment. Consider the effect of circuit overloading on
overcurrent protection and supply wiring.
Reliable Grounding. Maintain reliable grounding of rack mounted equipment.
Give particular attention to supply connections that are not direct connections to
the branch circuit: the use of power strips, for example.

3
1 HP Rack Storage/12 Overview
The HP Rack Storage/12 provides mass storage for use in an HP NetServer rack
mounted configuration. The HP Rack Storage/12 is compatible with the SCSI
(Small Computer System Interface) industry standard.
The embedded SCSI adapters in HP NetServers, and accessory SCSI adapters,
connect the host system and the HP Rack Storage/12. Adapters are available from
Hewlett-Packard (check with your HP Reseller). The HP NetServer adapters
include software that supports a variety of operating systems.
One or two RS/12 SCSI Cards connect the HP Rack Storage/12 to the host
system.
The HP Rack Storage/12 System can be configured in one of three operating
environments: simplex, duplex, or cluster. The simplex configuration accesses up
to 12 addressed hard drives. The cluster configuration accesses up to 12
addressed hard drives from two host systems. The duplex configuration accesses
two banks of up to six hard drives each. The duplex configuration is useful for
either a small number of drives per channel or mirrored configurations. The hard
drives are available in a variety of capacities to meet your mass storage needs.
Front View
Figure 1-1 shows the front view of the HP Rack Storage/12 system with half
height hard drives, low profile hard drives, and drive spacers installed. The
visible components are the Status LEDs, the drive cage, and the bezel.
Drive Cage Sections
Half-Height
Drive Low-Profile Drive Drive
Spacer
Bezel Status LEDs
Figure 1-1. HP Rack Storage/12 Front Panel

Chapter 1 HP Rack Storage/12 Overview
4
Status LEDs
The three Status LEDs indicate the current operating status of the HP Rack
Storage/12.
Bezel
The bezel covers the chassis, the support rails, and the thumbscrews securing the
chassis to the support rails. The bezel clips on to the chassis and can be installed
and removed without tools.
Drive Cage
The drive cage supports the installation of 8 half-height hard drives, 12
low-profile hard drives or a combination of half-height and low profile hard
drives. Drive spacers are used between half-height and low-profile hard drives.
Filler panels in unused drive slots are mandatory to maintain proper drive
cooling.
Configurations
Internal chassis braces divide the drive cage into four sections. Each section can
support the following hard drive configurations (see Figure 1-1):
•Three low-profile hard drives
•Two half-height hard drives
•One low-profile drive, one half-height drive and one drive spacer
SCSI Channels
Two internal SCSI channels connect the hard drives to the RS/12 SCSI card.
Hard drives installed in the left-half of the drive cage are connected to Channel 1.
The hard drives installed in the right-half of the drive cage are connected to
Channel 2 (see Figure 1-2).

Chapter 1 HP Rack Storage/12 Overview
5
SCSI Addresses
The SCSI ID assigned to a hard drive is determined by its position in the drive
cage. The SAF-TE chassis management processor is assigned SCSI ID 5. The
default SCSI IDs assigned to 8 half–height drives and 12 low–profile drives is
shown in Figure 1-2.
Channel 1 Channel 2
1 2 3 8 91011121314150
10 11 13 141083
Low-Profile
Drives
Half-Height
Drives
Figure 1-2. Default SCSI ID Assignment
Hot-Swap Hard Drives
For the latest list of HP-tested hard drive products, refer to the "Tested Products
List" Help topic on the HP NetServer Navigator CD-ROM or the Internet Web
page:
http://www.hp.com/netserver
NOTE Do not use hard drives that are not specifically certified by
Hewlett-Packard for use in the HP Rack Storage/12.
The hard drives are multimode disk drives, which allow the integration of the
differential drivers and receivers into SCSI drive controllers. The hard drive
technology provides increased signal quality, and ensures the same data integrity
as the previous high voltage differential designs at a reduced cost.
The HP Rack Storage/12 hot-swap hard drives come in two heights: the 1-inch
low-profile drive and the 1.6-inch half-height drive.

Chapter 1 HP Rack Storage/12 Overview
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Status LEDs
Each hard drive has two status indicators located in the lower left corner of the
front cover. The status indicators are drive activity and drive power. The
indicators are light pipes transmitting the output of two LEDs mounted on the
back-plane of the drive cage.
Filler Panels
Filler panels are installed in unused hard drive slots in the drive cage. The 1-inch
filler panels must be inserted to ensure that drive cage has the proper air flow and
prevent excessive EMI (electromagnetic radiation). Remove the filler panel when
you install a new hard drive.
CAUTION Do not remove the filler panels except to install a new hard
drive. Open slots in the drive cage can affect airflow and
cause thermal damage and excessive EMI.
Drive Spacers
Drive spaces are required when half-height and low-profile hard drives are
installed in the drive cage. The 0.5-inch drive spacer fills the space between
adjacent drives or between a drive and a filler panel. Drive spacers can be
mounted on low-profile drives, half-height drives and filler panels. Figure 1-1
shows the use of the drive spacer between half-height and low-profile hard
drives.
CAUTION Do not remove the drive spacers except to install a new hard
drive. Open slots in the drive cage can affect airflow and
cause thermal damage and excessive EMI.

Chapter 1 HP Rack Storage/12 Overview
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Rear View
Figure 1-3 shows the rear view of the HP Rack Storage/12.
Management Board
RS/12 SCSI Card 1
Power Supplies
RS/12 SCSI Card 2
(Optional)
Power Switch
Figure 1-3. Rear View of the HP Rack Storage/12
Power Switch
The power switch controls AC power to the HP Rack Storage/12. The switch is
located behind a hinged cover to prevent accidental power off.
NOTE 5 VDC standby power is supplied to the HP Rack Storage/12
even when the power switch is set OFF. To remove standby
power, disconnect both power supplies from their AC sources.

Chapter 1 HP Rack Storage/12 Overview
8
Power Supplies
Two hot-swap power supplies are installed in the HP Rack Storage/12. Each
power supply includes an attached fan module. Power supply operation is
controlled by the power switch on the rear panel of the HP Rack Storage/12.
NOTE 5 VDC standby power is supplied to the HP Rack Storage/12
even when the power switch is set OFF. To remove standby
power, disconnect both power supplies from their AC sources.
The power supply provides DC power to HP Rack Storage/12 components.
Standby power and fan power are supplied through separate outputs. The power
supply adjusts to the AC power source voltage and frequency through
auto-ranging.
The power load is shared by both power supplies. If a power supply fails, the
remaining power supply provides DC power to HP Rack Storage/12 components.
CAUTION Do not operate the HP Rack Storage/12 with a open power
supply slot. The chassis can overheat and damage
components.
NOTE Replace a failed power supply as soon as possible. The HP
Rack Storage/12 should not be operated for extended time
periods with only one operating power supply.
The power supply is protected from over-temperature conditions. When this
condition occurs, the power supply is shut down. The power supply will not
operate until the condition is removed and the AC power is cycled.
Fan Module
The variable speed fan module provides cooling airflow inside the HP Rack
Storage/12 chassis. Fan speed is regulated by the Management Board by
monitoring temperature sensors inside the chassis.
DC power is supplied to each fan by a redundant connection to both power
supplies. The fan continues to operate even if the attached power supply fails.

Chapter 1 HP Rack Storage/12 Overview
9
RS/12 SCSI Card
The hot-swap RS/12 SCSI card connects the disk storage of the HP Rack
Storage/12 to the host system. Data transfer rates of up to 40 Mb/sec are
supported. The HP Rack Storage/12 can be configured with one (simplex
configuration) or two (duplex or cluster configuration) RS/12 SCSI cards.
SAF-TE Chassis Management
Each RS/12 SCSI card includes a management processor that supports the
SAF-TE specification. The processor is accessible through SCSI ID 5.
SCSI Channels
The two SCSI channels are enabled by auto-configuration and configuration
switches on the Management Board.
When the HP Rack Storage/12 is powered on, Auto-configuration checks for how
many RS/12 SCSI cards are installed. Simplex configuration is enabled if one
RS/12 SCSI card is installed. Duplex configuration is enabled if two RS/12 SCSI
cards are installed. The cluster configuration is enabled by Switch 1 on the
Management Board. Descriptions of Simplex, Duplex, and cluster configurations
follow. See "Management Board" for a description of the configuration switches
later in this chapter.
Configuration Settings
The configuration of the RS/12 SCSI card is stored in memory in the HP Rack
Storage/12. When a hot-swap RS/12 SCSI card is replaced, the configuration is
restored from memory. The configuration is only reset when the HP Rack
Storage/12 is powered on.
Management Board
The hot-swap Management Board configures the HP Rack Storage/12 and
regulates the fan speed
Temperature LED
The temperature LED displays the current environmental temperature status of
components in the HP Rack System/12.

Chapter 1 HP Rack Storage/12 Overview
10
Configuration Switches
The bank of four switches configures the HP Rack Storage/12 for non-cluster or
cluster environments.
The switches are set Left or Right. The default switch setting is Left for all
switches. The description of each switch follows:
Switch 1: Selects cluster configuration. This switch has effect only when
two RS/12 SCSI cards are installed.
Set Left for non-cluster operation.
Set Right for cluster operation.
Switch 2 is reserved.
Switch 3 is reserved.
Switch 4 is reserved.
Configuration Switch Settings
The configuration switches take effect when the HP Rack Storage/12 is powered
on. Changing the switch settings after power on does not change the HP Rack
Storage/12 configuration. The configuration is saved in memory and cannot be
changed until power is cycled.

11
2 Controls, Ports, and Indicators
This chapter describes the controls, ports and indicators on the front and rear of
the HP Rack Storage/12.
Front View
The front panel indicators are shown in Figure 2-1.
ChassisStatusLEDs
Drive Power Indicator
Drive Activity Indicator
Figure 2-1. Front Panel Indicators
Chassis Status LEDs
The three Status LEDs indicate the current operating status of the HP Rack
Storage/12. The following conditions are displayed bythe Status LEDs:
Green: Normal operation.
Flashing Yellow: Warning condition exists in the chassis. Attention is
required. Check the operating status of components on the front and rear
panels.
Flashing Red: Fault condition exists in the chassis. Immediate attention
is required. Check the operating status of all components on the front and
rear panels.
Off: No power.

Chapter 2 Controls, Ports, and Indicators
12
Hard Drive Status Indicators
Each hard drive has two status indicators located in the lower left corner of the
front cover. The status indicators are drive power and drive activity.
Drive Power Indicator
The drive power indicator displays the following conditions:
Off: Hard drive not present, or not connected to the cage.
Green (solid): Hard drive present.
Drive Activity Indicator
The drive activity indicator displays the following conditions:
Off: No disk activity.
Flickering Green: Accessing disk.
Flashing Yellow: Disk failure predicted.
Red: Disk fault, or drive is offline.
Rear View
The rear of the HP Rack Storage/12 is shown in Figure 2-2. Controls, ports and
indicators for each component are described separately.
Management Board
Ultra2 SCSI Host Connector 1
Power Supplies
Ultra2 SCSI Host Connector 2
Power Switch
Figure 2-2. Rear Panel Components

Chapter 2 Controls, Ports, and Indicators
13
Power Switch
The power switch controls AC power to the HP Rack Storage/12. The switch is
located behind a hinged cover to prevent accidental power off.
NOTE 5 VDC standby power is supplied to the HP Rack Storage/12
even when the power switch is set OFF. To remove standby
power, disconnect both power supplies from their AC sources.
RS/12 SCSI Card
The port and indicator are shown in Figure 2-3.
68-pin Connector Status LED
Figure 2-3. RS/12 SCSI Card Ports and Indicators
Status LED
The Status LED indicates the current operating status of the RS/12 SCSI Card.
The following conditions are displayed by the Status LED:
Green: Normal operation.
Flashing Yellow: Firmware revision mismatch between the two installed
RS/12 SCSI cards.
Flashing Red: Hardware fault on the RS/12 SCSI card.
Off: No power supplied to the RS/12 SCSI card.
68-Pin Connector
The 68-pin high-density connector connects the HP Rack Storage/12 to the host
system. SCSI bus termination is inside the HP Rack Storage/12. The host system
and the HP Rack Storage/12 can be connected by external SCSI cables up to 12
meters long. External SCSI cables are not included with the HP Rack Storage/12.
Order SCSI cables from your HP Reseller.

Chapter 2 Controls, Ports, and Indicators
14
Management Board
The Management Board switches and indicators are shown in Figure 2-4.
Temperature LED
Configuration
Switches
1
2
3
4
Figure 2-4. Management Board Controls and Indicators
Temperature LED
The temperature LED displays the current environmental temperature status of
the HP Rack System/12.
Green: Normal operation.
Flashing Yellow: High temperature warning within the chassis. Check
fan operation, cooling, or airflow problems.
Flashing Red: Critical high temperature within the chassis. Check fan
operation, cooling, or airflow problems.
Off: No power.