Adaptec SCSI RAID
2120S/2200S
Software User’s Guide
R
Copyright
© 2002 Adaptec, Inc. All rights reserved. No part of this pub lication may be
reproduced, stored in a retrieval system, or transmitted in any form or by any
means, electronic, mechanical, photocopying, recording or otherwise, without the
prior written consent of Adaptec, Inc., 69 1 South Milpitas Blvd., Milpitas, CA 95035.
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ii
1 Introduction
Document Overview 1-1
Organization 1-1
Additional Supplied Documentation 1-2
Supported RAID Types 1-2
RAID-0 1-3
RAID-1 1-3
RAID-5 1-4
RAID-10 1-5
RAID-50 1-6
Simple Volume 1-6
Spanned Volume 1-6
RAID Volume 1-7
Features 1-7
Optimized Disk Utilization 1-7
Array Reconfiguration 1-7
Drive Enclosures 1-8
Hot Spares 1-8
Automatic Rebuild On Replacement 1-9
SCSI Devices Supported 1-9
Supported Controllers 1-9
Contents
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
2 Using Adaptec RAID Configuration
Using the Array Configuration Utility 2-2
Managing Arrays 2-2
Creating Arrays 2-6
Initializing Disk Drives 2-9
Rescanning Disk Drives 2-9
Using the SCSISelect Utility 2-10
Starting and Exiting SCSISelect 2-10
Using the SCSISelect Menus 2-10
Using the Controller Configuration Utility 2-11
Using the SCSI Configuration Utility 2-13
Using the Disk Utilities 2-15
Viewing the Event Log 2-16
3 Adaptec Storage Manager-Browser Edition
About Adaptec Storage Manager 3-2
Login to Adaptec Storage Manager 3-4
Installing a Security Certificate 3-6
Understanding Adaptec Storage Manager 3-7
Pop Up Tool Tips 3-8
Physical Devices 3-8
Logical Devices 3-11
Creating Arrays 3-12
Advanced Options 3-13
Creating and Deleting Hot Spares 3-16
Creating Hot Spares 3-16
Deleting Hot Spares 3-16
Deleting Arrays 3-17
Modifying Arrays 3-17
User Interface Options 3-19
Viewing Events 3-20
Help 3-20
Displaying and Modifying Properties 3-21
Applying Changes 3-21
Controller Properties 3-21
Channel Properties 3-23
iv
Physical Device Properties 3-23
Enclosure Properties 3-25
Logical Device Properties 3-26
Viewing and Creating Tasks 3-27
Task Viewer Tab 3-27
New Tasks Tab 3-28
About Adaptec Storage Manager Notifier Service 3-29
Notifier Service Event Levels 3-29
Enabling and Configuring the Notifier Service 3-31
Controlling ARCPD for Windows 2000 3-31
Controlling ARCPD for Unix and Linux 3-31
Controlling ARCPD for NetWare 3-32
Configuring the Notifier Service 3-32
System Event Log 3-32
Configuring E-mail Notification 3-33
Reconfiguring E-mail Notification 3-34
Contents
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
4 Using the Command Line Interface
Introducing the Command Line Interface 4-2
Accessing the Command Line Interface 4-2
Terminology 4-3
Using the CLI 4-4
Opening and Closing a Controller 4-4
Creating Single-Level Arrays 4-4
Deleting Arrays 4-7
Enabling Spares 4-8
Displaying Controller Information 4-9
Displaying Disk Information 4-11
Displaying Array Information 4-13
The CLI Commands 4-16
General Control Commands 4-16
Container (Array) Commands 4-18
Controller Commands 4-29
Diagnostic Commands 4-32
Disk Commands 4-34
Logfile Commands 4-38
Task Commands 4-39
Enclosure Commands 4-40
Using Automated Command Scripts 4-44
A Glossary
vi
1
Introduction
In this Chapter
Document Overview 1-1
Supported RAID Types 1-2
Features 1-7
SCSI Devices Supported 1-9
Supported Controllers 1-9
Document Overview
This section reviews the contents of the Adaptec SCSI RAID Softwar e
User’s Guide and includes an introduction to the major features of
your controller, as well as some of the terminology used.
Organization
Chapter 1, Introduction, briefly describes contents of the guide, the
software supplied with your RAID controller and the capabilities
of the controller.
Chapter 2, Using Adaptec RAID Configuration, introduces ARC, a
BIOS-based utility, that allows you to configure various features of
the RAID controller, as well as create and manage arrays. This
chapter provides step-by-step instructions on how to use ARC.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
Chapter 3, Adaptec Storage Manager-Browser Edition, provides an in-
depth look at Adaptec Storage Manager, an easy-to-use storage
configuration application that supports both local and remote
management. This chapter describes the user interface, and
provides step-by-step instructions on using Adaptec Storage
Manager to configure and manage your storage subsystem.
Chapter 4, Using the Command Line Interface, introduces the CLI, a
text command line-based interface that supports the full feature se t
of Adaptec storage controllers. This chapter provides an
introduction to using the CLI to manage your storage subsystem.
More detailed coverage is provided in the Software Reference Guide
supplied on the CD with your controller.
Appendix A, Glossary, provides an alphabetical list of terms with
brief definitions.
Additional Supplied Documentation
Other documentation supplied with your controller:
■ Quick Install Guide—A printed booklet that describes
installing your controller and software in commonly used
situations.
■ Installation Guide—Supplied in PDF form on the same CD as
this guide, the Installation Guide provides more detailed
instructions on installing your controller and software, as well
as covering less commonly used configurations.
■ Software Reference Guide—Comprehensive information on
the CLI, and DOS ACU.
Supported RAID Types
RAID is an acronym for either Redundant Array of Independent
Disks or Redundant Array of Inexpensive Disks. The goal of RAID
is to provide higher capacity, performance and/or reliability from
combinations of disk drives than it is practical to achieve with a
single drive.
1-2
Introduction
Adaptec RAID controllers support the following types of array:
RAID-0
A RAID-0 is created by striping data across two or more disk
drives. Simple striping like this creates no redundancy to protect
the data, but by sharing the load equally across multiple drives, it
does provide the best read and write performance of any RAID
type.
RAID-0
Drive
Data 0
Data 3
Data 6
Data 9
Drive
Data 1
Data 4
Data 7
Data 10
Drive
Data 2
Data 5
Data 8
Data 11
RAID-1
A RAID-1 must contain only two disk drives. All data stored on the
array is written to both drives. This duplication, or mirroring, of
the data provides redundancy, ensuring that if one drive fails no
data loss will occur.
RAID-1
Drive Drive
Data 0
Data 1
Data 2
Data 3
Data 0
Data 1
Data 2
Data 3
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
The cost of this redundancy is inefficient use of capacity, because
all data is written to both drives, only half of the total capacity is
available.
RAID-1 offers no write performance advantage over a single drive,
but read performance benefits from being able to share the load
between two drives.
RAID-5
A minimum of three drives is required to create a RAID-5. Like a
RAID-0, data is striped across the drives, however in the case of a
RAID-5, the capacity of one drive is used to store parity
information. The controller generates this parity data every time
data is written to the array, and it is distributed in stripes across all
the drives.
In the event of a drive failure, the contents of the failed drive can be
rebuilt from the data and parity on the remaining drives.
RAID-5
Drive
Data 0
Data 3
Data 6
Parity 3
Drive
Data 1
Data 4
Parity 2
Data 9
Drive
Data 2
Parity 1
Data 7
Data 10
Drive
Parity 0
Data 5
Data 8
Data 11
Using parity minimi zes the cap acity cost of redundancy. Since only
one drive is used to store parity, the worst case of a three-drive
RAID-5 only loses one third of the total capacity, for arrays with
more drives the lost capacity is smaller .
RAID-5 write performance is limited by the need to generate parity
data for every write. Read performance is good because the load is
spread equally across all the drives.
1-4
Introduction
RAID-10
A RAID-10 is an example of a dual-level array and is created by
using two or more equal-sized RAID-1s to create a RAID-0.
RAID-10
Drive
Data 0
Data 2
Data 4
Data 6
RAID-1
Data 0
Data 2
Data 4
Data 6
Top-Level Arrays
Drive
Data 0
Data 2
Data 4
Data 6
Drive
Data 1
Data 3
Data 5
Data 7
RAID-1
Data 1
Data 3
Data 5
Data 7
Drive
Data 1
Data 3
Data 5
Data 7
Second-Level Arrays
The top level RAID-0 shares the load among the second level
RAID-1s, improving both read and write performance. Since
second level arrays are RAID-1, only half the total capacity of the
drives in the array is available.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
RAID-50
A RAID-50 is a dual-level array created by using two or more
equal-sized RAID-5s to create a RAID-0.
RAID-50
Drive
Data 0
Data 4
Parity A2
Data 12
RAID-5
Data 0 & Data 1
Data 4 & Data 5
Data 8 & Data 9
Data 12 & Data 13
Drive
Data 1
Parity A1
Data 8
Data 13
Top-Level Arrays
Drive
Parity A0
Data 5
Data 9
Parity A3
Drive
Data 2
Data 6
Parity B2
Data 14
RAID-5
Data 2 & Data 3
Data 6 & Data 7
Data 10 & Data 11
Data 14 & Data 15
Drive
Data 3
Parity B1
Data 10
Data 15
Drive
Parity B0
Data 7
Data 11
Parity B3
Second-Level Arrays
The top level RAID-0 shares the load among the second-level
RAID-5s, improving both read and write performance. The second
level RAID-5s use of parity provides efficient redundancy.
Simple Volume
A simple volume consists of a single disk drive.
Spanned Volume
A spanned volume is created by joining two or more disk drives.
The drives do not have to be of equal capacity and are connected
end-to-end. A spanned volume offers no redundancy and no
performance advantage over a single drive.
1-6
Introduction
RAID Volume
A RAID volume is created by joining two or more single-level
arrays of the same RAID type. Unlike dual-level arrays, the arrays
in a RAID volume do not have to be of equal capacity. In direct
contrast to dual-level arrays, the second-level arrays in a RAID
volume are not striped together, instead they are connected end-toend.
Features
Optimized Disk Utilization
For simplicity the explanations of the various types of array above
describe the arrays in terms of complete drives. Typically arrays
use the same size drives, or if drives of varying capacities are used,
the capacity used on each drive is limited to that of lowest capacity
drive.
For example, a RAID-1 constructed using one 18G and one 9G
drive will only use half of the capacity of the larger drive and the
array will be limited to 9G.
Adaptec’s Optimized Disk Utilization feature allows arrays to be
created using portion of drives. These sections of drives are known
as segments and are created automatically during the array
creation process.
Within a given array each segment will be the same size, but the
segment size does not have to equal the capacity of the smallest
drive.
Any unused capacity on drives is known as available space, and
can be used in another array or arrays.
Adaptec RAID controllers use a small segment at the beginning of
each drive connected to them to store information about the drives
and arrays attached to the controller. This area is known as the
RAID signature.
Array Reconfiguration
Adaptec RAID controllers support modifying existing arrays by
expansion, migration from one array type to another and changing
the stripe size.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
Table 1-1 lists the RAID type migrations supported by Adaptec
Storage Manager.
Table 1-1 Supported Array Migrations
Current Array Type New Array Type
RAID-0 RAID-5 or 10
RAID-1 RAID-0 or 5 or 10
RAID-5 RAID-0 or 10
RAID-10 RAID-0 or 5
RAID-50 RAID-0 or 5 or 10
See Chapter 3, Adaptec Storage Manager-Browser Edition, for
instructions on modifying arrays.
Some operating systems, for example Windows XP, Windows
2000, Windows NT and Novell Netware, support Online Capacity
Expansion (OCE). That is, on completion of an array expansion, the
additional capacity can be used without rebooting the system.
Refer to your operating system documentation for instructions on
using the additional capacity.
Drive Enclosures
Adaptec RAID controllers support drive enclosures that include
either SES or SAF-TE enclosure management hardware.
Hot Spares
A hot spare is a drive that is reserved to replace a failing drive in a
redundant array. In the event of drive failure, the hot spare will
replace the failing drive and the array will be rebuilt.
Adaptec RAID controllers support two types of hot spares:
■ Global—protects every array that the drive has eno u gh
available capacity to protect.
■ Dedicated—protects only the array that it has been assigned to
protect.
1-8
Introduction
Automatic Rebuild On Replacement
Adaptec RAID controllers support a feature known as Automatic
rebuild on replacement. This may be useful in the event of a drive
failure if no hot spare is available and the failing drive is in an SES
or SAF-TE enabled drive enclosure.
When this feature is enabled (default) a rebuild of any redundant
array that the failed drive was a member of will be triggered
automatically by simply removing the failur e drive and r eplacing it
with a new drive.
SCSI Devices Supported
In addition to SCSI hard disk drives, Adaptec RAID controllers
support a wide range of SCSI devices, from CD-ROMs and tape
drives to scanners and removable media drives.
Supported Controllers
The majority of this chapter and all the other documentation
supplied with your controller describes the capabilities of the
RAID controllers listed in the left column of Table 1-2. Adaptec
Storage Manager-Browser Edition also supports other Adaptec
RAID controllers provided the RAID management software
supplied with those cards, Adaptec Storage Manager or Adaptec
Storage Manager Pro is already installed on the system.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
Adaptec RAID controllers supported by Adaptec Storage
Manager-Browser Edition ar e listed in Table 1-2.
Table 1-2 Supported Adaptec RAID Controllers
Advanced Feature Set Standard Feature Set
Adaptec SCSI RAID 2200S, 2120S,
1
5400S
Adaptec SCSI RAID 2000S, 2005S,
2010S, 2015S, 2100S, 2210S, 3200S,
3210S, 3400S, 3410S
2
Adaptec ATA RAID 2400A
1
In order for Adaptec Storage Manager - Browser Edition to support an Adaptec
SCSI RAID 5400S controller, Adaptec Storage Manager Pro must be uninstalled
before Adaptec Storage Manager - Browser Edition is installed.
2
In order for Adaptec Storage Manager - Browser Edition to support any controller
in this column, Adaptec Storage Manager or Storage Manager Pro must be
installed. Uninstalling Adaptec Storage Manager or Storage Manger Pro will
remove support for that controller.
Installing Adaptec Storage Manager-Browser Edition on a system
with one of the standard feature set cards installed does not add
any new functionality to the existing controller.
For a detailed description of the capabilities of any controller, refer
to the documentation supplied with that controller.
1-10
2
Using Adaptec RAID Configuration
In this Chapter
Using the Array Configuration Utility 2-2
Using the SCSISelect Utility 2-10
Using the Controller Configuration Utility 2-11
Using the SCSI Configuration Utility 2-13
Using the Disk Utilities 2-15
Viewing the Event Log 2-16
The Adaptec RAID Configuration Utility (ARC) is an embedded
BIOS utility that includes an Array Configuration Utility (ACU)
that allows the creation, configuration, and management of arrays.
Also included are SCSISelect which supports changing SCSI device
and controller settings, and Disk Utilities to low-level format or
verify disk media.
Adaptec also provides a standalone utility to create, configure, and
manage arrays from an MS-DOS prompt. This utility is called
Array Configuration Utility (ACU) for MS-DOS and it is described
in the Adaptec SCSI RAID Software Reference Guide. This chapter
describes only the functionality of the BIOS-based ACU.
To run ARC, when prompted by the following message during the
system boot process press Ctrl+A :
Press <Ctrl><A> for Adaptec RAID Configuration Utility
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
The Adaptec SCSI RAID Controller menu appears, presenting the
following options:
■ Array Configuration Utility
■ SCSISelect Utility
■ Disk Utilities
To select an option from this menu or from any of the menus
within ARC, move the cursor to the option with the Up/Down
arrow keys and press Enter. In some cases, selecting an option
displays another menu. You can return to the previous menu at
any time by pressing Esc.
The following sections discuss each of these menu options.
Using the Array Configuration Utility
The Array Configuration Utility (ACU) enables you to manage,
create, and delete arrays from the controller’s BIOS. You can also
initialize and rescan drives.
You can use the ACU to create a bootable array for the system. We
recommend that you configure the system to boot from an array
instead of from a single disk to take advantage of the redundancy
and performance features of arrays. For details on creating a
bootable array, see Deleting Arrays on page 2-4.
Note: If you are changing the configuration of a system tha t i s
already in use on a network, log all users off the system and
shut it down in an orderly manner before you start the ACU.
Managing Arrays
Use the Manage Arrays option to view array properties and
members, make an array the boot array, manage failover
assignments, and delete arrays. The following sections describe
these operations in greater detail.
Viewing Array Properties
To view the properties of an existing array:
1 At the BIOS prompt, press Ctrl+A.
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Using Adaptec RAID Configuration
2 From the ARC menu, select Array Configuration Utility.
3 From the ACU menu, select Manage Arrays.
4 From the List of Arrays dialog box, select the array you want to
view information on and press Enter.
The Array Properties dialog box appears, showing detailed
information on the array. The physical disks associated with the
array are displayed here, except in the case of dual-level arrays
(RAID 10 and RAID 50, for example). For dual-level arrays,
highlight the displayed member and press Enter to display the
second level. Press Enter again to display the physical disks
associated with the array.
Note: A failed drive is displayed in a different text color.
5 Press Esc to return to the previous menu.
Making an Array Bootable
You can make an array bootable so that the system boots from the
array instead of from a stand-alone (single) disk.
To make an array bootable:
1 At the BIOS prompt, press Ctrl+A.
2 From the ARC menu, select Array Configuration Utility.
3 From the ACU menu, select Manage Arrays.
4 Select the array you want to make bootable and type Ctrl+B.
This changes the selected array’s number to 00, making it the
controller’s boot array.
5 Reboot the system.
If you are booting from the controller, bear in mind the following:
■ If the controller is not a boot device, you can disable its runtime
BIOS, see page 2-11. When the BIOS is disabled it will not
occupy any of the expansion ROM region of the system’s
memory map. This may be useful if there are several cards with
an expansion ROM (BIOS) in the system.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
!
!
■ You cannot make a non-00 array bootable if the array is in a
build/verify or reconfiguration process.
Caution: The controller always uses the lowest numbered
array as its bootable array. If you delete array 00 for any
reason, the next lowest numbered array will become the
bootable array. Use the Ctrl+B option to mark the correct
array as the bootable array (by making it array 00).
If you want to boot from a stand-alone (single) disk drive, first
create a volume on that disk.
The system BIOS provides additional tools to modify the boot
order. For more information, refer to your system documentation.
Deleting Arrays
Caution: Back up the data on an array before you delete it. All
data on the array is lost when you delete the array. Deleted
arrays cannot be restored.
To delete an existing array:
1 At the BIOS prompt, press Ctrl+A.
2 From the ARC menu, select Array Configuration Utility.
3 From the ACU menu, select Manage Arrays.
4 Select the array you wish to delete and press Delete.
5 In the Array Properties dialog box, press Delete again and
press Enter. The following prompt is displayed:
Warning!! Deleting will erase all data from the
array.
Do you still want to continue? (Yes/No):
6 Press Yes to delete the array or No to return to the previous
menu. At the Array Properties dialog box, select Delete again
and press Enter.
7 Press Esc to return to the previous menu.
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Using Adaptec RAID Configuration
Managing Failover Drive Assignments
To assign a hot spare drive to an array:
1 Select Manage Arrays from the Main menu.
2 On the List of Arrays dialog box, select the array you want to
assign a hot spare drive to, and type Ctrl+S. The Hotspare
Management for Array dialog box is displayed, which shows
the drives that can be assigned as hot spare drives.
3 Select a drive and press the Insert key to assign the drive as a
hot spare. The specified drive is displayed in the Assigned
Hotspares drives list.
4 Press Enter to save the hot spare drive assignment. The
following prompt is displayed:
Have you finished managing Hotspare drives?
5 Type Y (yes) to return to the Main menu.
To remove an assigned hot spare drive from an array:
1 Select Manage Arrays from the Main menu.
2 In the List of Arrays dialog box, select the array from which
you want to remove the assigned hot spare drive and type
Ctrl+S. The Hotspare Management for Array dialog box is
displayed, which shows a list of drives that can be assigned as
hot spare drives and a list of drives that are assigned as hot
spare drives.
3 From the Assigned Hotspares drives list, select the drive to
be removed, then press Delete. The specified drive is
displayed in the Select Hotspares drives list.
4 Press Enter to save the removed hot spare drive assignment.
The following prompt is displayed:
Have you finished managing Hotspare drives?
5 Type Y (yes) to return to the Main menu.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
Creating Arrays
Before creating arrays, make sure the disks for the array are
connected and installed in your system (or enclosure). Note that
any disks with MS-DOS partitions, disks with no usable space, or
disks that are uninitialized appear dimmed and cannot be used for
creating a new array. For information on how to initialize a disk
drive, see page 2-9.
To create an array:
1 Shut down and reboot the system.
2 At the BIOS prompt, press Ctrl+A.
3 From the ARC menu, select Array Configuration Utility.
4 From the ACU menu, select Create Array.
5 Use the Left/Right arrow keys to select a channel.
6 Select the disks for the new array and press Insert. ACU
displays the largest usable space available for each disk. You
can use available space from multiple disks for the new array.
Note: Consult Table 2-1 on page 2-7 for the maximum
number of drives that can be used for each RAID level.
To deselect any disk, highlight the disk and press Delete.
Note: ACU cannot reliably find disks or enclosures that
were powered up after system power-up.
7 Press Enter when all disks for the new array are selected. The
Array Properties menu displays.
If you install a controller into a system that has been powered
down, on startup the BIOS will announce the detected
configuration changes. If the controller does not consider these
changes risky it will present a confirmation prompt and will autoconfirm if there has been no operator input in 30 seconds. If the
controller considers that the changes are risky, you will be
prompted for further action.
2-6
Using Adaptec RAID Configuration
Assigning Array Properties
Note that you cannot change array properties from the ACU once
the array is created. To change array properties once the array is
created, use Adaptec Storage Manager.
To assign properties to the new array:
1 In the Arra y Properties menu, select an array type and press
Enter. Note that only those array types available according to
the number of drives selected are displayed. For a description of
the supported array types, see the installation guide shipped
with your controller.
The physical SCSI limitation for the controller is 15 drives per
channel. The maximum number of drives allowed and
minimum number of drives required depends on the RAID
level. Consult Table 2-1 for a listing of this information.
Table 2-1 RAID Levels and Drives Information
RAID Level Maximum
Drives
Allowed
Volume 32 1
RAID 0 48 2
RAID 1 2 2
RAID 5 16 3
RAID 10 48 4
RAID 50 48 6
Minimum
Drives
Required
2 Type in an optional label for the array and press Enter.
3 Enter the desired array size. The maximum array size available
based on the segments you selected is displayed automatically.
If you want to designate a different array size, type the desired
array size and select MB (megabytes), GB (gigabytes), or TB
(terabytes) from the drop-down list. If the available space from
the selected segments is greater than the size specified, the
remaining space will be available for use in other arrays.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
4 Sel e ct the desired stripe size. The allowable stripe sizes are 16,
32, and 64 KB (the default). For RAID 50 arrays, 64 KB is the
only stripe size supported by ACU. The default stripe size gives
the best overall performance in most network environments.
5 Specify whether you want to enable read caching for the array.
This option should always be enabled to optimize performance,
unless your application is doing completely random reads,
which is unlikely.
6 Specify if you want to enable write caching for the array.
Note: By design, some controllers do not allow the use of
write caching. In such cases, the controller will not activate
write caching, regardless of the write cache setting. If this
is the case a message will be displayed that tells you the
settings have been recorded but have no effect.
Write caching options (if supported) consist of the following:
■ Enable when protected—If supported, enables the write
cache only when a battery is present and the battery’s char ge
status is OK.
■ Enable always—If supported, enables the writ e cach e even
if no battery is present or the battery’s charge status is not
OK. Note that setting an array’s write cache property to
Enable always might result in data loss or corruption if
power to the controller is lost when no battery is present or
the battery loses its charge.
■ Disable—Disables use of the write cache.
7 When you are finished, press Done.
2-8
Using Adaptec RAID Configuration
!
Initializing Disk Drives
If an installed disk does not appear in the disk selection list for
creating a new array or if it appears grayed out, you may have to
initialize it before you can use it as part of an array.
Caution: Initializing a disk overwrites the partition table on
the disk and makes any data on the disk inaccessible. If the
drive is used in an array, you may not be able to use the array
again. Do not initialize a disk that is part of a boot array. The
boot array is lowest numbered array (normally 00) in the List
of Arrays dialog box.
See Viewing Array Properties on page 2-2 for information on
determining which disks are associated with a particular
array.
To initialize drives:
1 At the BIOS prompt, press Ctrl+A.
2 From the ARC menu, select Array Configuration Utility.
3 Select Initialize Drives.
4 Use the Right/Left arrow keys to select a channel.
5 Use the up and down arrow keys to highlight the disk you wish
to initialize and press Insert.
6 Repeat step 5 until all the drives to be initialized are selected.
7 Press Enter.
8 Read the warning message and ensure that you have selected
the correct disk drives to initialize. Type Y to continue.
Rescanning Disk Drives
To rescan the drives connected to the controller:
1 At the BIOS prompt, press Ctrl+A.
2 From the ARC menu, select Array Configuration Utility.
3 Select Rescan Drives.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
Using the SCSISelect Utility
The SCSISelect Utility enables you to change device and controller
settings without opening the system chassis or handling the card. If
you want to view or change the current settings, see Starting and
Exiting SCSISelect on page 2-10. For detailed descriptions of each
setting, see Using the Controller Configuration Utility on page 2-11.
Starting and Exiting SCSISelect
To start SCSISelect:
1 When you turn on or reboot your system, press Ctrl+A to access
the Adaptec RAID Configuration (ARC) utilities when
prompted by the following message:
Press <Ctrl><A> for Adaptec RAID Configuration Utility
2 If multiple controllers are installed, select the controller you
want to configure and press Enter.
3 From the ARC menu, select SCSISelect Utility.
The Controller Configuration and SCSI Configuration menu
options are displayed.
To exit SCSISelect, press Esc until a message prompts you to exit. (If
you changed any host adapter settings, you are prompted to save
the changes before you exit.) Select Yes to exit and reboot the
system. Any changes you made take effect after the system boots.
Using the SCSISelect Menus
To select a SCSISelect menu option, move the cursor to the option
with the Up/Down arrow keys and press Enter. In some cases,
selecting an option displays another menu. You can return to the
previous menu at any time by pressing Esc.
To restore the original SCSISelect default values, press F6 from the
Configure/View Host Adapter Settings screen.
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Using Adaptec RAID Configuration
!
Using the Controller Configuration Utility
To access the Controller Configuration Utility:
1 When you turn on or reboot your system, press Ctrl+A to access
ARC when prompted by the following message:
Press <Ctrl><A> for Adaptec RAID Configuration Utility
2 If multiple controllers are installed, select the controller you
want to configure and press Enter.
3 From the ARC menu, select SCSISelect Utility.
The Controller Configuration and SCSI Configuration menu
options are displayed.
4 Select Controller Configuration.
You can modify the following Controller Interface Definitions:
■ Drives Write Cache — Enables or disables the write-back
cache feature of all SCSI disk drives connected to the
controller. If Disabled, the controller will disable the writeback cache of all attached drives. If Enabled, then the
controller will enable the write-back cache of all attached
drives. If Drive Default, then the controller will not change
the write-back cache setting of any attached drives. The
default is Drive Default.
Caution: Disk drives with write-back cache enabled do
not have the benefit of battery protection and could
lose or corrupt data as a result of unexpected power
loss or drive removal.
Certain controllers may not support drives write cache. In
those cases where drives write cache is not supported,
setting the option to Enabled has no effect.
■ Runtime BIOS — Enables or disables the controller’s
runtime BIOS. The BIOS must be enabled if you want to boot
from the controller.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
If Runtime BIOS is enabled and the BBS Support and Arraybased BBS Support options are disabled, the controller
BIOS is enabled and will post the lowest numbered array
(typically 00) on the first controller found as a legacy Int13h
bootable hard disk drive.
The default is Enabled.
■ Automatic rebuild on replacement — If enabled, this option
lets you replace a failed drive in the same enclosure slot in a
RAID 1, RAID 5, RAID 10 or RAID 50. Then the BIOS
recognizes that the failed drive has been replaced, initializes
the new disk, and immediately initiates a failover. Note that
this option is supported only for disks in SAF-TE enclosures
or backplanes.
The default is Enabled.
■ Array Background Consistency Check — If enabled, this
option forces the controller to constantly check all portions
of disks used by all arrays to see if the disks can return data
from the blocks. On a fully-redundant RAID 5 with no bad
segments, the controller repairs any data that cannot be
read.
The default is Disabled.
■ BBS Support — If the Runtime BIOS option and this option
are enabled and the Array-based BBS Support option is
disabled, the lowest numbered array on each controller is
posted as a BBS (BIOS Boot Specification) device.
The default is Enabled.
■ Array-based BBS Support — If Runtime BIOS, BBS
Support and this option are all enabled, the lowest
numbered three devices (typically 00, 01 and 02) on each
controller in the system are posted as BBS devices.
In a BBS-enabled system with two controllers installed, and
at least three arrays on each controller, if Array based BBS
support is enabled the “Hard drive boot order menu” will
include six entries for arrays connected to the two RAID
controllers.
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Using Adaptec RAID Configuration
The Ctrl-B option in ACU moves any array to be array 00.
Using this option repeatedly allows any boot order to be
chosen.
The default is Disabled.
■ Physical Drives Display during POST— The default is
Disabled.
■ CD-ROM Boot Support — The default is Enabled.
■ Removable Media Devices Support — The default is
Enabled.
■ Alarm Control — The default is Enabled.
You cannot set the following options:
■ NVRAM State — Displays the current status of the NVRAM
cache. This option is available only for controllers that have
a battery and is for display only. In normal operation it will
display Clean.
■ Controller Memory Size — Displays the amount of memory
installed on the controller.
Using the SCSI Configuration Utility
The SCSI Configuration Utility enables you to modify the SCSI
Channel Interface Definitions and SCSI Device Configuration
Options.
To access the SCSI Configuration Utility:
1 When you turn on or reboot your system, press Ctrl+A to access
the Adaptec RAID Configuration (ARC) utilities when
prompted by the following message:
Press <Ctrl><A> for Adaptec RAID Configuration Utility
2 If multiple controllers are installed, select the controller you
want to configure and press Enter.
3 From the ARC menu, select SCSISelect Utility.
The Controller Configuration and SCSI Configuration menu
options are displayed.
4 Select SCSI Configuration.
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Adaptec SCSI RAID 2120S/2200S Software User’s Guide
5 The Se lect SCSI Channel menu is displayed. Select the
appropriate channel from this menu.
You can modify the following SCSI Channel Interface
Definitions:
■ Controller SCSI Channel ID — Sets the controller’s SCSI
ID. We recommend that you leave the controller set to SCSI
ID 7, which gives it the highest priority on the SCSI channel.
■ SCSI Parity Checking — Determines whether the controller
verifies the accuracy of data transfer on the SCSI channel.
You should disable SCSI Parity Checking on the controller
and all SCSI devices if any SCSI device supported by the
controller does not support SCSI parity; otherwise, leave it
enabled. Most SCSI devices do support SCSI parity. If you
are not sure whether a device supports SCSI parity, consult
the documentation for the device.
■ Controller SCSI Channel Termination — Sets termination
on the controller card. We recommend that you leave the
default setting of Auto Mode.
■ SCSI Device Configuration — For information about these
options, see the section, SCSI Device Configuration Options.
SCSI Device Configuration Options
The SCSI device settings allow you to configur e certain paramete rs
for each device on the SCSI channel. To configure settings for a
specific device, you must know the SCSI ID assigned to that device.
If you are not sure of the SCSI ID, see Using the Disk Utilities on
page 2-15.
■ Maximum Transfer Rate — Determines the maximum data
transfer rate that the SCSI channel supports. The maximum
effective data transfer rate is doubled when Initiate Wide
Negotiation is set to Yes and 16-bit devices are attached. (Initiate
Wide Negotiation has no ef fect with 8-bit devices.)
■ Enable Disconnection — Determines whether the SCSI channel
allows the SCSI device to disconnect from the SCSI channel
(sometimes called Disconnect/Reconnect or Reselection). This
option should be enabled for maximum performance. The
default is yes.
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