and services are set forth in the express warranty statements accompanying such products and services.
Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for
technical or editorial errors or omissions contained herein.
HP Smart Array 6400 Series Controllers User Guide
January 2005 (Fifth Edition)
Part Number 309135-005
Audience assumptions
This document is for the person who installs, administers, and troubleshoots servers and storage
systems. HP assumes you are qualified in the servicing of computer equipment and trained in
recognizing hazards in products with hazardous energy levels.
Controller specifications and attributes ..........................................................................................9
Board components
Item ID Description
1 Internal SCSI connector, port A1 (do not use simultaneously with
item 3)
2 Internal SCSI connector, port A2 (do not use simultaneously with
item 4)
3 External SCSI connector, port A1 (do not use simultaneously with
item 1)
4 External SCSI connector, port A2 (do not use simultaneously with
item 2)
5 Controller battery
Page 8
8 HP Smart Array 6400 Series Controllers User Guide
Item ID Description
6 Battery-backed cache module
7 Connector for expansion board
Expansion module components
An expansion module is used to add two extra external channels to an SA6402
controller, converting it to an SA6404 controller.
Item ID Description
0–7 Runtime LEDs (CR10–CR17). These are
identical to the controller board runtime LEDs
(on page 51
8 VHDCI connector, port B2
9 VHDCI connector, port B1
10 Connector to controller board
).
The expansion module is a controller in its own right. Thus, the SA6404
controller is actually two 2-channel controllers sharing one PCI-X connector.
This arrangement is referred to as a dual (or twin) controller configuration.
Page 9
Hardware features 9
During POST, each component controller loads its own instance of the required
driver and sets its own configuration using ORCA. The dual controller is
displayed in both Systems Insight Manager and ACU as two separate entities in
one slot. In these utilities, the slot number label for the expansion module has a
lowercase b suffix, while the slot number label for the main controller has no
suffix.
NOTE: When an expansion module is installed, the capacity of the
battery-backed write cache on the main board is divided equally
between the expansion board and the main board. For more
information, refer to customer note CN0316W on the HP website
(http://www.hp.com
).
Controller specifications and attributes
Dimensions (excluding bracket) 31.2 cm x 10.7 cm x 1.8 cm (12.3 in x 4.2 in x 0.7 in)
Power required Typically 12–18 W
Ambient room temperature range Operating: 10° to 35°C (50° to 95°F)
Storage: -20° to 55°C (-4° to 131°F)
Relative humidity (noncondensing) Operating: 10% to 70%
Storage: 5% to 90%
RAID levels supported 0, 1, 1+0, 5, ADG
Processor type PowerPC 405 at 266 MHz
DDR SDRAM bus transfer rate Up to 2.0 GB/s at 266 MHz (DDR, 72 bit)
Connector type 3.3-V, 64-bit, Wide PCI-X (compatible with PCI slot)
PCI-X transfer rate Up to 1.0 GB/s at 133 MHz (64 bit)
Number of SCSI channels
Maximum number of drives per SCSI
channel
SCSI connector type 68-pin Wide internal, VHDCI external
SCSI termination Required, and provided on Compaq and newer HP systems
SCSI transfer rate Up to 320 MB/s (160 MHz DDR) per channel
6402: 2 LVD-only; 6404: 4 LVD-only
15 (14 in an external enclosure)
Page 10
10 HP Smart Array 6400 Series Controllers User Guide
For more information about the controller features and specifications, and for
information about system requirements, refer to the HP website
(http://www.hp.com/products/smartarray
).
Page 11
11
Determining the correct installation
procedure for the server
In this section
Unused autoconfigurable server ...................................................................................................11
New HP ProLiant server models self-configure when they are powered up for the
first time. For more information about the autoconfiguration process, refer to the
server-specific setup and installation guide or the HP ROM-Based Setup Utility User Guide. These guides are available on the server Documentation CD.
IMPORTANT: Do not power up the server until the hardware
configuration is satisfactory, as described in the procedure given in this
section.
1. Install the controller hardware ("Installing the controller hardware" on page
15
).
2. Install physical drives, if necessary.
The number of drives in the server determines the RAID level that is
autoconfigured when the server is powered up (next step). For details, refer
to the server-specific setup and installation guide or the HP ROM-Based Setup Utility User Guide.
3. Power up the server. The autoconfiguration process runs.
IMPORTANT: The expansion module on the SA6404 controller cannot
be used as a boot device.
4. Update the system firmware ("Updating the firmware" on page 21).
5. Update the controller firmware ("Updating the firmware" on page 21
).
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12 HP Smart Array 6400 Series Controllers User Guide
6. Install the operating system and device drivers ("Installing device drivers" on
page 33
). Instructions are provided with the CD that is supplied in the
controller kit.
7. Create and format additional logical drives if desired ("Configuring an array"
on page 25
).
The server is now ready to use.
Unused non-autoconfigurable server
1. Install the controller hardware ("Installing the controller hardware" on page
15
).
2. Update the system firmware ("Updating the firmware" on page 21
3. Update the controller firmware ("Updating the firmware" on page 21
4. Configure the server ("Configuring the server" on page 23
IMPORTANT: The expansion module on the SA6404 controller cannot
be used as a boot device.
5. Create and format at least one logical drive ("Configuring an array" on page
25
).
6. Install the operating system and device drivers ("Installing device drivers" on
page 33
). Instructions are provided with the CD that is supplied in the
controller kit.
7. Create and format additional logical drives if desired ("Configuring an array"
on page 25
).
The server is now ready to use.
Previously configured server
1. Back up any data on the system. (This step is required if you are moving
drives from a non-array controller to a Smart Array controller.)
2. Update the system firmware ("Updating the firmware" on page 21
).
).
).
).
Page 13
Determining the correct installation procedure for the server 13
3. If the new controller is to be the boot device, install the device drivers for the
operating system ("Installing device drivers" on page 33
). Otherwise,
continue with step 4.
IMPORTANT: The expansion module on the SA6404 controller cannot
be used as a boot device.
4. Install the controller hardware ("Installing the controller hardware" on page
).
15
5. Set the controller order ("Configuring the server" on page 23
6. Update the controller firmware ("Updating the firmware" on page 21
).
).
7. If the controller is not going to be the boot device, install the device drivers
for the operating system ("Installing device drivers" on page 33). Otherwise,
continue with the next step.
8. Update the Management Agents ("Installing Management Agents" on page
), if new versions are available.
34
9. Create and format additional logical drives if desired ("Configuring an array"
on page 25
).
10. If migrating from a non-array controller, restore data from the backup.
The server is now ready to use.
Page 14
Page 15
15
Installing the controller hardware
In this section
Before beginning the installation..................................................................................................15
Preparing the server......................................................................................................................15
Installing the controller board.......................................................................................................16
Before beginning the installation procedure, visit the HP website
(http://www.hp.com/support
) to confirm that you have the latest version of each
driver and utility file needed. Compare the version numbers of the files there
with those of the same files on the software CD or DVD that is supplied in the
controller kit.
Preparing the server
Before installing the controller in the server, back up all data. This step is
required if you are moving non-arrayed SCSI drives to a Smart Array controller,
because data is not preserved during a move between array controllers and nonarray controllers.
If the server supports hot-pluggable devices, you can install the controller board
without any further preparation ("Installing the controller board" on page 16
To prepare a server that does not support hot-pluggable devices:
1. Close all applications.
2. Power down the server.
).
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16 HP Smart Array 6400 Series Controllers User Guide
CAUTION: In systems that use external data storage, be sure
that the server is the first unit to be powered down and the last to be
powered back up. Taking this precaution ensures that the system does
not erroneously mark the drives as failed when the server is powered
up.
3. Power down all peripheral devices that are attached to the server.
4. Unplug the AC power cord from the outlet and then from the server.
5. Disconnect all peripheral devices from the server.
Installing the controller board
WARNING: To reduce the risk of personal injury or
damage to the equipment, consult the safety information and user
documentation provided with the server before attempting the
installation.
Many servers are capable of providing energy levels that are
considered hazardous and are intended to be serviced only by
qualified personnel who have been trained to deal with these
hazards. Do not remove enclosures or attempt to bypass any
interlocks that may be provided for the purpose of removing these
hazardous conditions.
1. Remove or open the access panel.
2. Select an available 3.3-V PCI or PCI-X slot.
3. Remove the slot cover or open the hot-plug latch. Save the retaining screw if
one is present.
4. Slide the controller board along the slot alignment guide, and press the board
firmly into the slot so that the contacts on the board edge are properly seated
in the system board connector.
5. Secure the controller board in place with the hot-plug latch or retaining
screw. If there is a guide latch on the rear of the board, close the latch.
6. Connect storage devices to the controller ("Connecting storage devices" on
page 17
).
NOTE: Drives that are to be grouped in the same array should all have
comparable capacity for efficient use of total storage capacity.
Page 17
Installing the controller hardware 17
7. Replace the access panel, and secure it with screws if any are present.
CAUTION: Do not operate the server for long periods without
the access panel. Operating the server without the access panel results
in improper airflow and improper cooling that can lead to thermal
damage.
Connecting storage devices
The controller supports Ultra2, Ultra160 (Ultra3), and Ultra320 drives.
Each peripheral that is connected to the controller must have a unique SCSI ID
value within the range of 0 to 15 (except ID 7, which is reserved for controller
use). This value determines the priority that is given to the device when it
attempts to use the SCSI bus.
The system automatically sets the SCSI IDs for hot-pluggable devices if they are
supported. For non-hot-pluggable devices, you must set the ID values manually
by using switches or jumpers on the device itself.
SCSI buses require termination on both ends to prevent signal degradation. In HP
ProLiant and Integrity servers, however, the controller, SCSI cable, and
backplane already provide this termination.
Connecting internal storage
1. If the storage device that you are adding is not hot-pluggable, power down
the system.
2. Install drives in the removable media bays on the server.
CAUTION: Do not use hot-pluggable drives on the same SCSI
bus as non-hot-pluggable drives.
NOTE: Drives that are to be grouped in the same array should all have
comparable capacity for efficient use of total storage capacity.
For additional information about drive installation, refer to the appropriate
section in this guide ("Replacing, moving, or adding hard drives" on page 39
and consult the documentation that accompanied the drives.
)
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18 HP Smart Array 6400 Series Controllers User Guide
When you have finished installing drives, continue with the next step.
− If the drives are hot-pluggable, go to step 3.
− If the drives are not hot-pluggable, go to step 4.
3. Attach the internal point-to-point SCSI cable (provided with the server) from
the internal connector of the controller to the hot-plug drive cage.
Installation of the hot-pluggable drives is complete.
4. For each SCSI bus, manually set the SCSI ID on each drive to a unique value
in the range of 0 to 15, except 7 (which is reserved for controller use). For
detailed instructions, consult the documentation that is provided with the
drive.
5. Attach a multi-device SCSI cable from the internal connector of the
controller to the non-hot-pluggable hard drives. (The cable may have been
provided with the server.)
6. Replace the access panel, and secure it with the thumbscrews if any are
present.
CAUTION: Do not operate the server for long periods without
the access panel. Operating the server without the access panel results
in improper airflow and improper cooling that can lead to thermal
damage.
Connecting external storage
1. On the rear of the server, connect the external cable to the VHDCI connector
on the controller, and tighten the lock screws on the cable connector.
2. Attach the other end of the cable to the storage enclosure, and tighten the
lock screws on the cable connector.
SCSI cable part numbers
NOTE: If you require additional cables, order them by the option kit
number.
Page 19
Installing the controller hardware 19
SCSI cable type Cable length Option kit number Cable assembly number
Methods for updating the firmware..............................................................................................21
Methods for updating the firmware
To update the firmware on the server, controller, or hard drives, use Smart
Components. These components are available on the Firmware Maintenance CD.
A more recent version of a particular server or controller component might be
available on the support page of the HP website (http://www.hp.com/support).
Components for controller and hard drive firmware updates are also available
from the software and drivers page for storage products
(http://www.hp.com/support/proliantstorage
1. Find the most recent version of the component that you require. Components
for controller firmware updates are available in offline and online formats.
2. Follow the instructions for installing the component on the server. These
instructions are given with the CD and are provided on the same Web page
as the component.
3. Follow the additional instructions that describe how to use the component to
flash the ROM. These instructions are provided with each component.
).
Page 22
Page 23
23
Configuring the server
In this section
Configuring the server..................................................................................................................23
Configuring the server
After installing the controller hardware and updating the firmware, use RBSU to
configure the server.
NOTE: The 2-channel expansion module is a controller in its own right.
Thus, the Smart Array 6404 Controller is actually two 2-channel
controllers sharing one PCI-X connector. During POST, each
component controller loads its own instance of the required driver and
sets its own configuration using ORCA.
1. Power up the server.
The server runs the POST sequence and briefly displays an RBSU prompt.
2. At the prompt, press the F9 key to start RBSU.
3. Follow the on-screen instructions to configure the server and set the boot
controller order.
IMPORTANT: The expansion module on the SA6404 controller cannot
be used as a boot device.
4. Save the configuration, and exit from the utility.
5. Restart the server for the new settings to take effect.
For more information about using RBSU, refer to the HP ROM-Based Setup Utility User Guide or the server setup and installation guide. These documents
are both available on the Documentation CD supplied in the server kit.
Comparing the utilities .................................................................................................................26
Using ORCA ................................................................................................................................27
Using ACU ...................................................................................................................................28
Using CPQONLIN .......................................................................................................................28
Introduction
HP provides three utilities for manually configuring an array on a Smart Array
controller:
• ORCA—A simple ROM-based configuration utility
• ACU—A versatile, browser-based utility that provides maximum control
over configuration parameters
• CPQONLIN—A menu-based configuration utility specifically for servers
using Novell NetWare
NOTE: To copy a particular array configuration to several other servers
on the same network, use ACR or the scripting capability of ACU. ACR
is provided in the SmartStart Scripting Toolkit, available on the HP
website (http://www.hp.com/servers/sstoolkit
).
Whichever utility you use, the following limitations apply:
• For the most efficient use of drive space, do not mix drives of different
capacities within the same array. The configuration utility treats all physical
drives in an array as if they have the same capacity as the smallest drive in
the array. The excess capacity of any larger drives is wasted because it is
unavailable for data storage.
• The probability that an array will experience a drive failure increases with
the number of physical drives in the array. If you configure a logical drive
with RAID 5, keep the probability of failure low by using no more than 14
physical drives in the array.
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26 HP Smart Array 6400 Series Controllers User Guide
For conceptual information about arrays, logical drives, and fault-tolerance
methods, and for information about default array configuration settings, refer to
the HP Array Configuration Utility User Guide. This document is available on
the Documentation CD that is provided in the controller kit.
Comparing the utilities
NOTE: A + in the appropriate column indicates that the feature or
procedure is supported, while -- indicates that the feature or procedure
Supported features ACU CPQONLIN ORCA
Uses a graphical interface + -- --
Available in languages other than English + -- --
Executable at any time + + --
Available on CD + + --
is not supported.
Uses a wizard to suggest the optimum configuration for an
+ + --
unconfigured controller
Describes configuration errors + -- --
Supported procedures ACU CPQONLIN ORCA
Creation and deletion of arrays and logical drives + + +
Assignment of RAID level + + +
Sharing of spare drives among several arrays + + --
Assignment of multiple spare drives per array + + --
Setting of stripe size + + --
Migration of RAID level or stripe size + + --
Configuration of controller settings + + --
Expansion of an array + + --
Creation of multiple logical drives per array + + --
Setting of boot controller -- -- +
Page 27
Configuring an array 27
Using ORCA
1. Power up the server. POST runs, and any array controllers that are in the
server are initialized one at a time. During each controller initialization
process, POST halts for several seconds while an ORCA prompt message
appears.
2. At the ORCA prompt, press the F8 key.
The ORCA main menu appears, enabling you to create, view, or delete a
logical drive.
To create a logical drive using ORCA:
1. Select Create Logical Drive.
The screen displays a list of all available (unconfigured) physical drives and
the valid RAID options for the system.
2. Use the Arrow keys, Spacebar, and Tab key to navigate around the screen
and set up the logical drive, including an online spare drive if one is required.
NOTE: You cannot use ORCA to configure one spare drive to be
shared among several arrays. Only ACU enables you to configure
shared spare drives.
3. Press the Enter key to accept the settings.
4. Press the F8 key to confirm the settings and save the new configuration.
After several seconds, the Configuration Saved screen appears.
5. Press the Enter key to continue.
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28 HP Smart Array 6400 Series Controllers User Guide
You can now create another logical drive by repeating the previous steps.
NOTE: Newly created logical drives are invisible to the operating
system. To make the new logical drives available for data storage,
format them using the instructions given in the operating system
documentation.
Using ACU
For detailed information about using ACU, refer to the HP Array Configuration
Utility User Guide. This document is available on the Documentation CD that is provided in the controller kit.
Using CPQONLIN
The NetWare Online Array Configuration Utility (CPQONLIN) is an NLM that
enables you to configure drive arrays on a NetWare server without powering
down the server or storage system. CPQONLIN also provides information about
the status of drives attached to the controller.
To run CPQONLIN:
1. Use the software CD provided with the controller to load the drivers
(HPQCISS.HAM and CPQSHD.CDM) and the executable
(CPQONLIN.NLM) on the server. Detailed instructions are provided with the
CD.
2. Enter cpqonlin at the console prompt.
3. Use the arrow keys to highlight the Array Configuration Utility menu item,
and then press the Enter key.
4. From the list of controllers that is presented, select the one that you want to
configure.
− If there are no logical drives connected to the controller, an auto-
configuration wizard opens and prompts you for fault-tolerance
information.
Page 29
Configuring an array 29
− If the controller is connected to at least one logical drive, CPQONLIN
continues in manual configuration mode. Use the arrow and Enter keys
to navigate around the screen and set up the logical drive. To get online
help at any time, press the F1 key.
5. When you have finished configuring the array, save the changes.
NOTE: Newly created logical drives are invisible to the operating
system. To make the new logical drives available for data storage,
format them using the instructions given in the operating system
documentation.
The following sections provide details of some typical procedures.
Setting drive rebuild, expand priority, and accelerator ratio
1. Go to the Main Configuration View screen.
2. Highlight the controller.
3. Select the Controller Settings option below Controller Options. The
Controller Settings screen appears.
Drive rebuild
Drive rebuild occurs after a physical drive fails and is replaced. Only logical
drives configured for fault tolerance (RAID 1, RAID 5, ADG) on the array with
the failed physical drive will rebuild.
Priority settings
To set the drive rebuild priority:
1. Highlight the controller.
2. Select the controller settings:
− If you choose low priority for drive rebuild, drive rebuilding occurs
when I/O to the drive is inactive.
− If you choose high priority, drive rebuilding occurs faster, at the expense
of normal I/O operations.
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30 HP Smart Array 6400 Series Controllers User Guide
Accelerator ratio
The controller has an onboard cache called an Array Accelerator, which performs
both write-posting and read-ahead caching. The setting in CPQONLIN
determines the amount of memory allocated to the read and write caches.
For example, if the accelerator ratio is set to Read 75%:Write 25%, 75% of Array
Accelerator cache is dedicated to read-ahead cache and 25% is dedicated to the
write-posting cache. This option can be modified from the Controller Settings
menu.
Expanding an array
During an expand, performance may be slightly degraded. In most cases,
however, any potential degradation is offset by the addition of physical drives.
Some tips for expanding include:
• Perform the expand process during periods of low server use. If you must
expand during peak periods, CPQONLIN enables you to set the priority of
the expand. Setting the priority to LOW affects performance the least, but it
takes longer for the new space to become available.
• When expanding, always add drives with a capacity equal to or greater than
the capacity of the smallest drive in the array. Adding larger drives wastes
space because only the space that is equal to the smallest drive size can be
used.
Adding or configuring spare drives
When adding a spare drive to an array, an unassigned drive must exist or a drive
already assigned as a spare must exist on another array. You can assign a single
spare to any number of arrays or assign separate spares.
When you select Assign Spare Drive, only drives that qualify appear (for
example, only those spares that are large enough appear). If drives that you
expect to see do not appear, switch to the physical drive view (Tab key), and
check the size of the drives. The capacity of the spare must be equal to or greater
than the capacity of the smallest drive in the array.
Page 31
Configuring an array 31
Migrating RAID level and stripe size online
Using CPQONLIN, you can modify both the RAID level and stripe size of an
existing logical drive while online. To migrate a drive:
1. Select the drive setting option under the logical drive menu for the drive you
intend to modify.
2. Select the new RAID level and/or stripe size from the choices presented. If
the new settings are valid, the migration begins when you save the changes.
The drivers for the controller are located on the Support Software CD or the
SmartStart CD that is provided in the controller kit. Updates are posted to the HP
website (http://www.hp.com/support
NOTE: The 2-channel expansion module is a controller in its own right.
Thus, the Smart Array 6404 Controller is actually two 2-channel
controllers sharing one PCI-X connector. During POST, each
component controller loads its own instance of the required driver and
sets its own configuration using ORCA.
).
Using the Support Software CD: Instructions for installing the drivers from the
Support Software CD are given in the leaflet that is supplied with the CD. Note
that the exact procedure depends on whether the server is new or already contains
the operating system and user data.
Using the SmartStart CD: If you use the Assisted Installation path feature of
SmartStart to install the operating system on a new server, the drivers are
automatically installed at the same time.
You can also use SmartStart to update the drivers manually on older systems. For
more information, refer to the SmartStart documentation.
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34 HP Smart Array 6400 Series Controllers User Guide
Installing Management Agents
NOTE: The 2-channel expansion module is a controller in its own right.
Thus, the Smart Array 6404 Controller is actually two 2-channel
controllers sharing one PCI-X connector. This dual controller is
displayed in both Systems Insight Manager and ACU as two separate
entities in one slot. In these utilities, the slot number label for the
expansion module has a lowercase b suffix, while the slot number label
for the main controller has no suffix.
If you use the Assisted Installation path feature of SmartStart to install the
operating system on a new server, the Management Agents are automatically
installed at the same time.
You can update the Management Agents by using the latest versions of the
agents from the HP website (http://www.hp.com/servers/manage
for updating the agents is provided on the same Web page.
If the new agents do not function correctly, you might also need to update
Systems Insight Manager. The latest version of Systems Insight Manager is
available for download at the HP website (http://www.hp.com/servers/manage
). The procedure
).
Page 35
35
Upgrading or replacing controller options
In this section
Replacing a battery .......................................................................................................................35
Replacing the expansion module..................................................................................................37
Replacing a battery
WARNING: There is a risk of explosion, fire, or personal
injury if the battery pack is not properly handled. Refer to "Battery
replacement notice (on page 62)" before installing or removing any
item that contains a battery pack.
IMPORTANT: Whether you are replacing the main cache battery or the
secondary (lower) cache battery, remove both batteries so that the
board circuitry recognizes the new battery pack.
1. Close all applications, and then power down the server. This procedure
flushes all data from the cache.
2. Remove the cache module:
a. Open the ejector latches on each side of the DIMM connector (1).
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36 HP Smart Array 6400 Series Controllers User Guide
b. Pull the cache module out of the DIMM slot (2).
3. If the main cache battery must be replaced:
a. Press the battery retainer tabs down, and push them through to the other
side of the cache board (1).
b. Lift the battery pack off the cache board (2).
4. Remove the secondary cache battery pack:
a. Unhook the wire retainer that holds the battery pack to the controller
board (1).
Page 37
Upgrading or replacing controller options 37
b. While holding the battery in one hand, pull the plastic retainer tabs up
and push them through to the other side of the controller board (2).
5. Replace whichever battery is degraded.
6. Reinstall the batteries on the cache board and the controller board.
7. Reinstall the cache board and its battery on the controller.
Replacing the expansion module
To install the expansion module:
1. Insert the VHDCI connector into the empty slot on the controller bracket (1),
sliding the expansion module under the bracket lip (2).
2. Press firmly on the back of the expansion module to seat the expansion
module connector securely in the socket on the controller board (3).
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38 HP Smart Array 6400 Series Controllers User Guide
3. Secure the expansion module to the controller board by inserting and
tightening the appropriate screw (provided in the kit) in the back of the
controller board (4).
To remove the expansion module, reverse this procedure.
Page 39
39
Replacing, moving, or adding hard drives
In this section
Identifying the status of a hard drive............................................................................................39
Recognizing hard drive failure .....................................................................................................41
Replacing hard drives ...................................................................................................................43
Moving drives and arrays .............................................................................................................47
When a drive is configured as a part of an array and connected to a powered-up
controller, the condition of the drive can be determined from the illumination
pattern of the hard drive status lights (LEDs). The table ("Hot-plug SCSI hard
drive LED combinations" on page 40
) describes the meanings of the different
illumination patterns.
Page 40
40 HP Smart Array 6400 Series Controllers User Guide
Hot-plug SCSI hard drive LED combinations
Activity
LED (1)
Online
LED (2)
Fault LED
(3)
Interpretation
On, off, or
flashing
On, off, or
flashing
On or off Flashing A predictive failure alert has been received for this drive.
Replace the drive as soon as possible.
On Off The drive is online and is configured as part of an array.
If the array is configured for fault tolerance and all other drives in the
array are online, and a predictive failure alert is received or a drive
capacity upgrade is in progress, you may replace the drive online.
On or
flashing
On Off Off
Flashing Off
Do not remove the drive. Removing a drive may terminate the
current operation and cause data loss.
The drive is rebuilding or undergoing capacity expansion.
Do not remove the drive.
The drive is being accessed, but (1) it is not configured as part of an
array; (2) it is a replacement drive and rebuild has not yet started; or
(3) it is spinning up during the POST sequence.
Flashing Flashing Flashing
Do not remove the drive. Removing a drive may cause data loss
in non-fault-tolerant configurations.
Either (1) the drive is part of an array being selected by an array
configuration utility; (2) Drive Identification has been selected in
HP SIM; or (3) drive firmware is being updated.
Off Off On The drive has failed and has been placed offline.
You may replace the drive.
Off Off Off Either (1) the drive is not configured as part of an array; (2) the drive
is configured as part of an array, but it is a replacement drive that is
not being accessed or being rebuilt yet; or (3) the drive is configured
as an online spare.
If the drive is connected to an array controller, you may replace the
drive online.
Page 41
Replacing, moving, or adding hard drives 41
Recognizing hard drive failure
A steadily glowing Fault LED indicates that that drive has failed. Other means by
which hard drive failure is revealed are:
• The amber LED on the front of a storage system illuminates if failed drives
are inside. (However, this LED also illuminates when other problems occur,
such as when a fan fails, a redundant power supply fails, or the system
overheats.)
• A POST message lists failed drives whenever the system is restarted, as long
as the controller detects at least one functional drive.
• ACU represents failed drives with a distinctive icon.
• Systems Insight Manager can detect failed drives remotely across a network.
(For more information about Systems Insight Manager, refer to the
documentation on the Management CD.)
• ADU lists all failed drives.
For additional information about diagnosing hard drive problems, refer to the HP Servers Troubleshooting Guide.
CAUTION: Sometimes, a drive that has previously been failed
by the controller may seem to be operational after the system is powercycled or (for a hot-pluggable drive) after the drive has been removed
and reinserted. However, continued use of such marginal drives may
eventually result in data loss. Replace the marginal drive as soon as
possible.
Effects of a hard drive failure
When a hard drive fails, all logical drives that are in the same array are affected.
Each logical drive in an array may be using a different fault-tolerance method, so
each logical drive can be affected differently.
• RAID 0 configurations cannot tolerate drive failure. If any physical drive in
the array fails, all non-fault-tolerant (RAID 0) logical drives in the same
array will also fail.
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• RAID 1+0 configurations can tolerate multiple drive failures as long as no
failed drives are mirrored to one another.
• RAID 5 configurations can tolerate one drive failure.
• RAID ADG configurations can tolerate simultaneous failure of two drives.
Compromised fault tolerance
If more hard drives fail than the fault-tolerance method allows, fault tolerance is
compromised, and the logical drive fails. In this case, all requests from the
operating system are rejected with unrecoverable errors. You are likely to lose
data, although it can sometimes be recovered (refer to "Recovering from
compromised fault tolerance" on page 42
One example of a situation in which compromised fault tolerance may occur is
when a drive in an array fails while another drive in the array is being rebuilt. If
the array has no online spare, any logical drives in this array that are configured
with RAID 5 fault tolerance will fail.
Compromised fault tolerance can also be caused by non-drive problems, such as
a faulty cable or temporary power loss to a storage system. In such cases, you do
not need to replace the physical drives. However, you may still have lost data,
especially if the system was busy at the time that the problem occurred.
).
Recovering from compromised fault tolerance
If fault tolerance is compromised, inserting replacement drives does not improve
the condition of the logical volume. Instead, if the screen displays unrecoverable
error messages, perform the following procedure to recover data:
1. Power down the entire system, and then power it back up. In some cases, a
marginal drive will work again for long enough to enable you to make copies
of important files.
If a 1779 POST message is displayed, press the F2 key to re-enable the
logical volumes. Remember that data loss has probably occurred and any
data on the logical volume is suspect.
2. Make copies of important data, if possible.
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Replacing, moving, or adding hard drives 43
3. Replace any failed drives.
4. After you have replaced the failed drives, fault tolerance may again be
compromised. If so, cycle the power again. If the 1779 POST message is
displayed:
a. Press the F2 key to re-enable the logical drives.
b. Recreate the partitions.
c. Restore all data from backup.
To minimize the risk of data loss that is caused by compromised fault tolerance,
make frequent backups of all logical volumes.
Replacing hard drives
The most common reason for replacing a hard drive is that it has failed.
However, another reason is to gradually increase the storage capacity of the
entire system ("Upgrading hard drive capacity" on page 46
If you insert a hot-pluggable drive into a drive bay while the system power is on,
all disk activity in the array pauses while the new drive is spinning up. This spinup process usually lasts for approximately 20 seconds. When the drive has
achieved its normal spin rate, data recovery to the replacement drive begins
automatically (as indicated by the blinking Online LED on the replacement
drive) if the array is in a fault-tolerant configuration.
).
If you replace a drive belonging to a fault-tolerant configuration while the system
power is off, a POST message is displayed when the system is next powered up.
This message prompts you to press the F1 key to start automatic data recovery. If
you do not enable automatic data recovery, the logical volume remains in a
ready-to-recover condition and the same POST message is displayed whenever
the system is restarted.
Factors to consider before replacing hard drives
• In systems that use external data storage, be sure that the server is the first
unit to be powered down and the last to be powered back up. Taking this
precaution ensures that the system does not erroneously mark the drives as
failed when the server is powered up.
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• If you set the SCSI ID jumpers manually:
− Check the ID value of the removed drive to be sure that it corresponds to
the ID of the drive marked as failed.
− Set the same ID value on the replacement drive to prevent SCSI ID
conflicts.
Before replacing a degraded drive:
• Open Systems Insight Manager and inspect the Error Counter window for
each physical drive in the same array to confirm that no other drives have
any errors. (For details, refer to the Systems Insight Manager documentation
on the Management CD.)
• Be sure that the array has a current, valid backup.
• Use replacement drives that have a capacity at least as great as that of the
smallest drive in the array. The controller immediately fails drives that have
insufficient capacity.
To minimize the likelihood of fatal system errors, take these precautions when
removing failed drives:
• Do not remove a degraded drive if any other drive in the array is offline (the
Online LED is off). In this situation, no other drive in the array can be
removed without data loss.
Exceptions:
− When RAID 1+0 is used, drives are mirrored in pairs. Several drives can
be in a failed condition simultaneously (and they can all be replaced
simultaneously) without data loss, as long as no two failed drives belong
to the same mirrored pair.
− When RAID ADG is used, two drives can fail simultaneously (and be
replaced simultaneously) without data loss.
− If the offline drive is a spare, the degraded drive can be replaced.
• Do not remove a second drive from an array until the first failed or missing
drive has been replaced and the rebuild process is complete. (The rebuild is
complete when the Online LED on the front of the drive stops blinking.)
These cases are the exceptions:
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Replacing, moving, or adding hard drives 45
− In RAID ADG configurations, any two drives in the array can be
replaced simultaneously.
− In RAID 1+0 configurations, any drives that are not mirrored to other
removed or failed drives can be simultaneously replaced offline without
data loss.
Automatic data recovery (rebuild)
When you replace a hard drive in an array, the controller uses the fault-tolerance
information on the remaining drives in the array to reconstruct the missing data
(the data that was originally on the replaced drive) and write it to the replacement
drive. This process is called automatic data recovery, or rebuild. If fault tolerance
is compromised, this data cannot be reconstructed and is likely to be permanently
lost.
If another drive in the array fails while fault tolerance is unavailable during
rebuild, a fatal system error may occur, and all data on the array is then lost. In
exceptional cases, however, failure of another drive need not lead to a fatal
system error. These exceptions include:
• Failure after activation of a spare drive
• Failure of a drive that is not mirrored to any other failed drives (in a RAID
1+0 configuration)
• Failure of a second drive in a RAID ADG configuration
Time required for a rebuild
The time required for a rebuild varies considerably, depending on several factors:
• The priority that the rebuild is given over normal I/O operations (you can
change the priority setting by using ACU)
• The amount of I/O activity during the rebuild operation
• The rotational speed of the hard drives
• The availability of drive cache
• The brand, model, and age of the drives
• The amount of unused capacity on the drives
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• The number of drives in the array (for RAID 5 and RAID ADG)
Allow approximately 15 minutes per gigabyte for the rebuild process to be
completed. This figure is conservative, and newer drive models usually require
less time to rebuild.
System performance is affected during the rebuild, and the system is unprotected
against further drive failure until the rebuild has finished. Therefore, replace
drives during periods of low activity when possible.
CAUTION: If the Online LED of the replacement drive stops
blinking and the amber Fault LED glows, or if other drive LEDs in the
array go out, the replacement drive has failed and is producing
unrecoverable disk errors. Remove and replace the failed replacement
drive.
When automatic data recovery has finished, the Online LED of the replacement
drive stops blinking and begins to glow steadily.
Failure of another drive during rebuild
If a non-correctable read error occurs on another physical drive in the array
during the rebuild process, the Online LED of the replacement drive stops
blinking and the rebuild abnormally terminates.
If this situation occurs, reboot the server. The system may temporarily become
operational long enough to allow recovery of unsaved data. In any case, locate
the faulty drive, replace it, and restore data from backup.
Upgrading hard drive capacity
You can increase the storage capacity on a system even if there are no available
drive bays by swapping drives one at a time for higher capacity drives. This
method is viable as long as a fault-tolerance method is running.
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Replacing, moving, or adding hard drives 47
CAUTION: Because it can take up to 15 minutes per gigabyte
to rebuild the data in the new configuration, the system is unprotected
against drive failure for many hours while a given drive is upgraded.
Perform drive capacity upgrades only during periods of minimal system
activity.
To upgrade hard drive capacity:
1. Back up all data.
2. Replace any drive. The data on the new drive is recreated from redundant
information on the remaining drives.
CAUTION: Do not replace any other drive until data rebuild on
this drive is complete.
3. When data on the new drive has been rebuilt (the Activity LED turns off),
repeat the previous step for the other drives in the array, one at a time.
When you have replaced all drives, you can use the extra capacity to either create
new logical drives or extend existing logical drives. For more information about
these procedures, refer to the HP Array Configuration Utility User Guide.
Moving drives and arrays
You can move drives to other ID positions on the same array controller. You can
also move a complete array from one controller to another, even if the controllers
are on different servers.
Before you move drives, the following conditions must be met:
• If moving the drives to a different server, the new server must have enough
empty bays to accommodate all the drives simultaneously.
• The move will not result in more than 14 physical drives per controller
channel.
• No controller will be configured with more than 32 logical volumes.
• The array has no failed or missing drives.
• The array is in its original configuration.
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48 HP Smart Array 6400 Series Controllers User Guide
• The controller is not reading from or writing to any of the spare drives in the
array.
• The controller is not running capacity expansion, capacity extension, or
RAID or stripe size migration.
• The controller is using the latest firmware version (recommended).
If you want to move an array to another controller, you must also consider the
following additional limitations:
• All drives in the array must be moved at the same time.
• In most cases, a moved array (and the logical drives that it contains) can still
undergo array capacity expansion, logical drive capacity extension, or
migration of RAID level or stripe size. An exception occurs when the array
meets all of these conditions:
− It was originally created on a SMART-2/P, SMART-2DH, SA-3200,
SA-3100ES, SA-4200, SA-4250ES, or SA-530x controller.
− It is moved to a controller that does not have a battery-backed cache.
− It has less than 4 MB of unused capacity.
• If a controller contains a RAID ADG logical volume, none of the arrays on
the controller can be moved directly to a controller that does not support
RAID ADG. The arrays can be moved indirectly, as described by the
instructions in this section.
When all the conditions have been met:
1. Back up all data before removing any drives or changing configuration. This
step is required if you are moving data-containing drives from a controller
that does not have a battery-backed cache.
2. Power down the system.
3. If you are moving an array from a controller that contains a RAID ADG
logical volume to a controller that does not support RAID ADG:
a. Remove or disconnect the drives that contain the RAID ADG logical
volume.
b. Reboot the server.
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Replacing, moving, or adding hard drives 49
c. Open ACU and navigate to the controller that contained the RAID ADG
volume.
ACU displays the missing RAID ADG volume using a different icon to
indicate that the volume is unavailable.
d. Delete the RAID ADG volume.
e. Accept the configuration change, and then close ACU.
f. Power down the system.
4. Move the drives.
5. Power up the system. If a 1724 POST message is displayed, drive positions
were changed successfully and the configuration was updated.
If a 1785 (Not Configured) POST message is displayed:
a. Power down the system immediately to prevent data loss.
b. Return the drives to their original locations.
c. Restore the data from backup, if necessary.
6. Check the new drive configuration by running ORCA or ACU ("Configuring
an array" on page 25
).
Adding drives
You can add hard drives to a system at any time, as long as you do not exceed the
maximum number of drives that the controller supports. You can then either
build a new array from the added drives or use the extra storage capacity to
expand the capacity of an existing array.
To perform an array capacity expansion, use ACU. If the system is using hotpluggable drives, you can expand array capacity without shutting down the
operating system (that is, with the server online) if ACU is running in the same
environment as the normal server applications. (For more information, refer to
the HP Array Configuration Utility User Guide.)
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The expansion process is illustrated in the following figure, in which the original
array (containing data) is shown with a dashed border and the newly added drives
(containing no data) are shown unshaded. The array controller adds the new
drives to the array and redistributes the original logical drives over the enlarged
array one logical drive at a time. This process liberates some storage capacity on
each of the physical drives in the array. During this procedure, the logical drives
each keep the same fault-tolerance method in the enlarged array that they had in
the smaller array.
When the expansion process has finished, you can use the liberated storage
capacity on the enlarged array to create new logical drives. Alternatively, you
can enlarge one of the original logical drives. This latter process is called logical drive capacity extension and is also carried out using ACU.
NOTE: During server power-up, each runtime LED illuminates
LED ID Color LED name and interpretation
0 Amber CR100: Diagnostics Error LED.
1 Amber CR101: Drive Failure LED. A physical drive connected to the controller
2 Blue CR102: SCSI Bus Active LED. At least one of the SCSI buses on the
3 Green CR103: XOR Active LED. The controller is calculating parity data.
randomly until POST has finished.
has failed.
controller is active.
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52 HP Smart Array 6400 Series Controllers User Guide
LED ID Color LED name and interpretation
4 Green CR104: Command Outstanding LED. The controller is working on a
command.
5 Blue CR105: Heartbeat LED. This LED flashes every 2 seconds, unless the
controller is malfunctioning.
6 Green CR106: Gas Pedal LED. This LED, together with item 7, indicates the
amount of controller CPU activity. For details, refer to the following
table.
7 Green CR107: Idle Task LED. This LED, together with item 6, indicates the
amount of controller CPU activity. For details, refer to the following
table.
8 Amber CR11: Battery Status LED. For interpretation, refer to Cache module
LEDs (on page 53
9 Green CR10: Battery Charging LED. For interpretation, refer to Cache module
LEDs (on page 53).
Controller CPU activity level Item 6 status Item 7 status
0–25% Off Blinking
).
25–50% Blinking Off
50–75% On steadily Off
75–100% On steadily On steadily
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Diagnosing array problems 53
Cache module LEDs
Item 1
(amber
LED)
-- Steady glow The cache batteries are being charged.
-- Fast blink The cache microcontroller is waiting for the
Steady glow -- One of the following situations is occurring:
Fast blink
Slow blink
(once every
16 seconds)
Item 2
(green LED)
Interpretation
host controller to communicate.
• There is a short circuit across the battery
terminals or within the battery pack.
• The host controller is updating the cache
microcontroller firmware.
There is an open circuit across the battery
terminals or within the battery pack.
This display pattern might occur after the
system is powered down. It indicates that the
cache contains data that has not yet been
written to the drives. Restore system power as
soon as possible to prevent data loss. (The
battery lifetime depends on the cache module
size. For further information, refer to the
controller QuickSpecs on the HP website
(http://www.hp.com
).)
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Diagnostic tools
Several diagnostic tools provide feedback about problems with arrays. The most
important are:
• ADU
This utility is available on the SmartStart CD. The meanings of the various
ADU error messages are provided in the HP Servers Troubleshooting Guide.
• POST messages
Smart Array controllers produce diagnostic error messages at reboot. Many
of these POST messages are self-explanatory and suggest corrective actions.
For more information about POST messages, refer to the HP Servers Troubleshooting Guide.
• Server Diagnostics
To use Server Diagnostics:
a. Insert the SmartStart CD into the server CD-ROM drive.
b. Click Agree when the license agreement is displayed, and select the
Maintenance tab.
c. Click Server Diagnostics, and follow the on-screen prompts and
Grounding methods to prevent electrostatic discharge.................................................................56
Preventing electrostatic discharge
To prevent damaging the system, be aware of the precautions you need to follow
when setting up the system or handling parts. A discharge of static electricity
from a finger or other conductor may damage system boards or other staticsensitive devices. This type of damage may reduce the life expectancy of the
device.
To prevent electrostatic damage:
• Avoid hand contact by transporting and storing products in static-safe
containers.
• Keep electrostatic-sensitive parts in their containers until they arrive at static-
free workstations.
• Place parts on a grounded surface before removing them from their
containers.
• Avoid touching pins, leads, or circuitry.
• Always be properly grounded when touching a static-sensitive component or
assembly.
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Grounding methods to prevent electrostatic
discharge
Several methods are used for grounding. Use one or more of the following
methods when handling or installing electrostatic-sensitive parts:
• Use a wrist strap connected by a ground cord to a grounded workstation or
computer chassis. Wrist straps are flexible straps with a minimum of
1 megohm ±10 percent resistance in the ground cords. To provide proper
ground, wear the strap snug against the skin.
• Use heel straps, toe straps, or boot straps at standing workstations. Wear the
straps on both feet when standing on conductive floors or dissipating floor
mats.
• Use conductive field service tools.
• Use a portable field service kit with a folding static-dissipating work mat.
If you do not have any of the suggested equipment for proper grounding, have an
authorized reseller install the part.
For more information on static electricity or assistance with product installation,
contact an authorized reseller.
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57
Regulatory compliance notices
In this section
Federal Communications Commission notice..............................................................................57
Canadian notice (Avis Canadien).................................................................................................60
European Union regulatory notice................................................................................................60
Part 15 of the Federal Communications Commission (FCC) Rules and
Regulations has established Radio Frequency (RF) emission limits to provide an
interference-free radio frequency spectrum. Many electronic devices, including
computers, generate RF energy incidental to their intended function and are,
therefore, covered by these rules. These rules place computers and related
peripheral devices into two classes, A and B, depending upon their intended
installation. Class A devices are those that may reasonably be expected to be
installed in a business or commercial environment. Class B devices are those that
may reasonably be expected to be installed in a residential environment (for
example, personal computers). The FCC requires devices in both classes to bear
a label indicating the interference potential of the device as well as additional
operating instructions for the user.
FCC rating label
The FCC rating label on the device shows the classification (A or B) of the
equipment. Class B devices have an FCC logo or ID on the label. Class A
devices do not have an FCC logo or ID on the label. After you determine the
class of the device, refer to the corresponding statement.
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58 HP Smart Array 6400 Series Controllers User Guide
Class A equipment
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference when the equipment is
operated in a commercial environment. This equipment generates, uses, and can
radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communications.
Operation of this equipment in a residential area is likely to cause harmful
interference, in which case the user will be required to correct the interference at
personal expense.
Class B equipment
This equipment has been tested and found to comply with the limits for a Class B
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to
provide reasonable protection against harmful interference in a residential
installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may
cause harmful interference to radio communications. However, there is no
guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to
try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit that is different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio or television technician for help.
Page 59
Regulatory compliance notices 59
Declaration of conformity for products marked with the FCC
logo, United States only
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following two conditions: (1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
For questions regarding this product, contact us by mail or telephone:
• Hewlett-Packard Company
P. O. Box 692000, Mail Stop 530113
Houston, Texas 77269-2000
For questions regarding this FCC declaration, contact us by mail or telephone:
• Hewlett-Packard Company
P. O. Box 692000, Mail Stop 510101
Houston, Texas 77269-2000
• 1-281-514-3333
To identify this product, refer to the part, series, or model number found on the
product.
Modifications
The FCC requires the user to be notified that any changes or modifications made
to this device that are not expressly approved by Hewlett-Packard Company may
void the user’s authority to operate the equipment.
Cables
Connections to this device must be made with shielded cables with metallic
RFI/EMI connector hoods in order to maintain compliance with FCC Rules and
Regulations.
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60 HP Smart Array 6400 Series Controllers User Guide
Canadian notice (Avis Canadien)
Class A equipment
This Class A digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe A respecte toutes les exigences du
Règlement sur le matériel brouilleur du Canada.
Class B equipment
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.
European Union regulatory notice
This product complies with the following EU Directives:
• Low Voltage Directive 73/23/EEC
• EMC Directive 89/336/EEC
*For a notified body number refer to the product regulatory label.
Compliance with these directives implies conformity to harmonized European
standards (European Norms) which are listed on the EU Declaration of
Conformity issued by Hewlett-Packard for this product or product family.
Page 61
Regulatory compliance notices 61
BSMI notice
Japanese notice
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62 HP Smart Array 6400 Series Controllers User Guide
Korean notice A&B
Class A equipment
Class B equipment
Battery replacement notice
This component uses a nickel metal hydride (NiMH) battery pack.
WARNING: There is a risk of explosion, fire, or personal
injury if a battery pack is mishandled. To reduce this risk:
• Do not attempt to recharge the batteries if they are
disconnected from the controller.
• Do not expose the battery pack to water, or to temperatures
higher than 60°C (140°F).
• Do not abuse, disassemble, crush, or puncture the battery
pack.
• Do not short the external contacts.
• Replace the battery pack only with the designated HP spare.
Battery disposal should comply with local regulations.
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Regulatory compliance notices 63
Batteries, battery packs, and accumulators should not be
disposed of together with the general household waste. To
forward them to recycling or proper disposal, use the public
collection system or return them by established parts return
methods to HP, an authorized HP Partner, or one of their agents.
For more information about battery replacement or proper disposal, contact an
authorized reseller or an authorized service provider.
Taiwan battery recycling notice
The Taiwan EPA requires dry battery manufacturing or importing firms in
accordance with Article 15 of the Waste Disposal Act to indicate the recovery
marks on the batteries used in sales, giveaway or promotion. Contact a qualified
Taiwanese recycler for proper battery disposal.
Page 64
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65
Acronyms and abbreviations
ACR
Array Configuration Replicator
ACU
Array Configuration Utility
ADG
Advanced Data Guarding (also known as RAID 6)
ADU
Array Diagnostics Utility
BBWC
battery-backed write cache
CPQONLIN
NetWare Online Array Configuration Utility
ORCA
Option ROM Configuration for Arrays
POST
Power-On Self-Test
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66 HP Smart Array 6400 Series Controllers User Guide
RAID
redundant array of inexpensive (or independent) disks
cables 59
cache module LEDs 53
cache, features of 53
Canadian notice 60
compromised fault tolerance 42
configuring an array 25
controller board, features of 7
controller board, installing 15
controller installation, overview of 11
controller LEDs 51
CPQONLIN 28
D
data recovery 42, 45
data transfer rate 9
diagnostic tools 54
drive failure, detecting 41
drive LEDs 39, 40
electrostatic discharge 55
error messages 41, 54
European Union notice 60
expanding an array 49
extending logical drive capacity 49
F
failure of hard drive 41, 46
fault tolerance, compromised 42
Federal Communications Commission (FCC)
notice 57, 59
firmware, updating 21
G
grounding methods 56
H
hard drive LEDs 39, 40
hard drive, failure of 41
hard drive, replacing 43
hard drives, adding 49
hard drives, determining status of 39
hard drives, installing 17
J
Japanese notice 61
K
Korean notices 62
L
LEDs, cache module 53
LEDs, controller 51
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