Quantum DX3000, DX5000 User's Guide
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Quantum DX3000 and DX5000 User’s Guide, 81-81493-03 B01, June 2006, Made in USA.
Quantum Corporation provides this publication “as is” without warranty of any kind, either express or
implied, including but not limited to the implied warranties of merchantability or fitness for a particular
purpose. Quantum Corporation may revise this publication from time to time without notice.
COPYRIGHT STATEMENT
Copyright 2006 by Quantum Corporation. All rights reserved.
Your right to copy this manual is limited by copyright law. Making copies or adaptations without prior
written authorization of Quantum Corporation is prohibited by law and constitutes a punishable violation of
the law.
TRADEMARK STATEMENT
DLT and DLTtape are trademarks of Quantum Corporation.
Quantum, the Quantum logo, and the DLTtape logo are all registered trademarks of Quantum Corporation.
Other trademarks may be mentioned herein which belong to other companies.
Contents
Preface xi
StorageCare Guardian....................................................................................xvi
Chapter 1 DX3000 and DX5000 System Description 1
Overview..............................................................................................................1
Time Required for Backup .........................................................................2
Confidence in Completing the Backup ....................................................2
Time to Restore Data...................................................................................2
Features and Benefits .........................................................................................2
DX3000 and DX5000 Systems ...........................................................................4
DX3000 System Components.....................................................................5
DX5000 System Components.....................................................................6
Hard Drive Storage ............................................................................................8
RAID Sets....................................................................................................10
Supported RAID Configurations ...................................................................10
RAID 5 Configuration...............................................................................11
Typical Configurations ....................................................................................11
Quantum DX3000 and DX5000 User’s Guide iii
Chapter 2 Basic Operations 13
Turning on the System.....................................................................................13
Turning on the DX3000 ............................................................................14
Turning on the DX5000 ............................................................................14
DX3000/DX5000 Operations ..........................................................................15
Chassis LEDs and Buttons.......................................................................15
Hard Drive Sled LEDs..............................................................................18
Ethernet Port LEDs ...................................................................................18
Power Supply LED....................................................................................19
Relocating the DX3000 and DX5000 Systems...............................................21
Chapter 3 DX3000 and DX5000 Remote Management 22
DX3000 and DX5000 Web Pages ....................................................................23
DX3000 and DX5000 Web Page Menu Items ........................................23
Accessing DX3000 and DX5000 Web Pages ..........................................24
Using the DX3000 and DX5000 Web Pages...........................................26
Configuration....................................................................................................28
Accessing Library Configuration............................................................28
Configuring the Media.............................................................................30
Configuring the Library ...........................................................................35
Configuring the Network ........................................................................44
Configuring the Date and Time ..............................................................46
Configuring the Security Options...........................................................47
Configuring System Hardware...............................................................52
System Status ....................................................................................................62
Accessing System Status ..........................................................................63
Viewing Tape Drive Details.....................................................................64
Viewing Robot Details..............................................................................66
Viewing Storage Bin Details....................................................................67
Viewing Virtual Disk Status ....................................................................69
Viewing Hardware Status........................................................................70
Viewing Media Status...............................................................................71
Remote Alerts....................................................................................................72
Accessing Remote Alerts..........................................................................72
Licensing............................................................................................................82
Contents
Quantum DX3000 and DX5000 User’s Guide iv
Utilities...............................................................................................................83
Accessing Utilities.....................................................................................83
Changing Library State ............................................................................84
System Log.................................................................................................84
Uploading Firmware ................................................................................86
System Configuration...............................................................................87
Downloading the System Diagnostics File............................................90
Rebooting the DX3000/DX5000 System ................................................91
Chapter 4 Troubleshooting 93
Common Problems and Solutions .................................................................93
Hardware Problems..................................................................................93
Ethernet Network Problems....................................................................94
Appendix A DX3000/DX5000 System Specifications 96
Physical Characteristics...................................................................................97
Performance Characteristics ...........................................................................98
Environmental Specifications.........................................................................98
Contents
Appendix B Regulatory Statements 100
Disposal of Electrical and Electronic Equipment ......................................105
Glossary 106
Index 109
Quantum DX3000 and DX5000 User’s Guide v
Figures
Figure 1 DX3000 System..............................................................................4
Figure 2 DX5000 System..............................................................................4
Figure 3 DX3000 System Components ......................................................6
Figure 4 DX5000 System Components ......................................................7
Figure 5 DX3000 and DX5000 Hard Drives ..............................................8
Figure 6 RAID 5 Configuration ................................................................11
Figure 7 DX3000/DX5000 System Plus a Tape Library ........................12
Figure 8 Turning on the DX3000 ..............................................................14
Figure 9 Turning on the DX5000 ..............................................................14
Figure 10 DX3000 LED Indicators..............................................................15
Figure 11 DX5000 LED Indicators..............................................................17
Figure 12 Hard Drive Sled LEDs................................................................18
Figure 13 Ethernet Port LEDs .....................................................................19
Figure 14 Power Supply LED Indicators...................................................20
Figure 15 DX3000 and DX5000 Web Page Menu Items ..........................24
Figure 16 Login Page....................................................................................25
Figure 17 Home Page...................................................................................26
Quantum DX3000 and DX5000 User’s Guide vi
Figure 18 Configuration Page.....................................................................29
Figure 19 Media Screen ...............................................................................30
Figure 20 Edit Volume Media Area Screen ..............................................31
Figure 21 Tape Cartridges Screen..............................................................32
Figure 22 Virtual Disks Area Screen..........................................................34
Figure 23 Partitions Page.............................................................................36
Figure 24 Adding a Partition......................................................................37
Figure 25 Editing a Partition.......................................................................39
Figure 26 Enabling/Disabling Write Protection......................................41
Figure 27 Assigning Barcode Labels..........................................................42
Figure 28 Assigning a Library Name ........................................................44
Figure 29 Network Configuration Page....................................................45
Figure 30 Date and Time Configuration...................................................47
Figure 31 Security Configuration...............................................................48
Figure 32 SSL Configuration.......................................................................50
Figures
Figure 33 Install SSL Certificate Page........................................................51
Figure 34 Device Mapping Page ................................................................53
Figure 35 iSCSI Ethernet Input Port Locations ........................................55
Figure 36 iSCSI Configuration Page ..........................................................56
Figure 37 Fibre Channel Configuration ....................................................58
Figure 38 RAID Configuration Screen (DX5000 Shown)........................60
Figure 39 Hard Drive Numbering .............................................................62
Figure 40 System Status Page .....................................................................63
Figure 41 Tape Drive Details......................................................................65
Figure 42 Robot Details ...............................................................................66
Figure 43 Storage Bin Details......................................................................68
Figure 44 Virtual Disk Status Page ............................................................69
Figure 45 Hardware Status Page................................................................70
Figure 46 Media Status Page.......................................................................71
Quantum DX3000 and DX5000 User’s Guide vii
Figure 47 Remote Alerts Page ....................................................................73
Figure 48 Email Tab .....................................................................................74
Figure 49 SNMP Tab....................................................................................76
Figure 50 SNMP Trap Destinations...........................................................78
Figure 51 SNMP Community Management.............................................79
Figure 52 Contacts Tab ................................................................................80
Figure 53 End User Agreement Tab ..........................................................83
Figure 54 Utilities Page................................................................................84
Figure 55 System Log...................................................................................85
Figure 56 Uploading Firmware..................................................................86
Figure 57 Activating/ Removing a Firmware Image..............................87
Figure 58 Downloading Configuration Files............................................88
Figure 59 Activating the Configuration File.............................................90
Figure 60 Downloading Diagnostics Files................................................91
Figure 61 Shutting Down the DX3000/DX5000 System.........................92
Figures
Quantum DX3000 and DX5000 User’s Guide
Tables
Table 1 DX3000/DX5000 Capacity Specifications..................................5
Table 2 DX3000 LEDs...............................................................................16
Table 3 DX5000 LEDs...............................................................................17
Table 4 Drive Sled LEDs ..........................................................................18
Table 5 Ethernet Port LEDs .....................................................................19
Table 6 Power Supply LED .....................................................................20
Table 7 Network Configuration Fields..................................................45
Table 8 Port Settings.................................................................................59
Table 9 RAID Configurations..................................................................60
Table 10 Tape Drive Details ......................................................................65
Table 11 Robot Details................................................................................67
Table 12 Storage Bin Details......................................................................68
Table 13 Logical Drive Status....................................................................69
Table 14 Email Notification.......................................................................74
Table 15 Email Server Information...........................................................75
Table 16 SNMP Trap Selections................................................................77
Table 17 Company Information................................................................81
Quantum DX3000 and DX5000 User’s Guide ix
Table 18 Primary/Secondary Contact Information...............................81
Table 19 Hardware Problems ...................................................................94
Table 20 Ethernet Network Problems......................................................95
Table 21 Physical Characteristics .............................................................97
Table 22 Interfaces......................................................................................97
Table 23 Performance Characteristics......................................................98
Table 24 Environmental Specifications ...................................................98
Tables
Quantum DX3000 and DX5000 User’s Guide x
Preface
This manual introduces the Quantum DX3000 and DX5000 enhanced data
protection systems and discusses:
• System operations
• Configuration
• Web interface
• Basic troubleshooting
Audience This manual is written for DX3000 and DX5000 system operators and field service
engineers.
Document
Organization
Quantum DX3000 and DX5000 User’s Guide xi
Following is a brief description of chapter contents.
• Chapter 1, “DX3000 and DX5000 System Description,” provides an overview
of the DX3000/DX5000 system.
• Chapter 2, “Basic Operations,” provides basic operating instructions for the
DX3000/DX5000 system.
• Chapter 3, “DX3000 and DX5000 Remote Management,” discusses using the
DX3000/DX5000 system management pages to control the system remotely.
• Chapter 4, “Troubleshooting,” discusses problems you may encounter during
the setup and operation of the DX3000/DX5000 system.
• The Appendices provide system specifications, event handling, and
regulatory statements.
Notational
Conventions
This manual uses the following conventions:
Caution: Caution indicates potential hazards to equipment or data.
Warning: Warning indicates potential hazards to personal safety.
Note: Note emphasizes important information related to the main
topic.
Tech Tip: Tech tip provides additional technical information that
may assist in installation and configuration.
• Right side of the system — Refers to the right side as you face the component
being described.
• Left side of the system — Refers to the left side as you face the component
being described.
• b — All binary numbers are succeeded by “b.”
• h — All hexadecimal numbers are succeeded by “h.”
• Error or attention conditions are represented in parenthesis that translate as
follows:
(SK=S ASC=AA ASCQ=QQ)
where:
S — hexadecimal sense key value
AA — hexadecimal additional sense code
QQ — hexadecimal additional sense code qualifiers
Quantum DX3000 and DX5000 User’s Guide xii
Related Documents The following Quantum document are also available for the DX3000 and DX5000
systems:
Document
Document No. Document Title
Description
81-81492 Quantum DX3000 and
DX5000 Quick Start
Guide
81-81494 Quantum DX3000/
DX5000/DPM5500 Hard
Drive Upgrade
Instructions
81-81503 Quantum DX3000/
DX5000/DPM5500 Fan
Replacement Instructions
81-81504 Quantum DX3000/
DX5000/DPM5500
Power Supply
Replacement Instructions
81-81506 Quantum DX3000/
DX5000/DPM5500 Hard
Drive Replacement
Instructions
81-81507 Quantum DX3000/
DX5000/DPM5500
Chassis Replacement
Instructions
Describes unpacking
and installing both
the DX3000 and
DX5000 systems
Describes upgrading
your DX3000 or
DX5000 hard drives.
Describes replacing
your DX3000 or
DX5000 cooling fans.
Describes replacing
your DX3000 or
DX5000 power
supplies.
Describes replacing
your DX3000 or
DX5000 hard drives.
Describes replacing
your DX3000 or
DX5000 chassis.
Supported Internet
Browsers
The Internet browser software is not supplied with the DX3000/DX5000 system;
you must obtain and install it independently. The DX3000/DX5000 system
supports the following Internet browsers:
Quantum DX3000 and DX5000 User’s Guide xiii
• Microsoft Internet Explorer 6.0 SP1 or later
You can download this software from
http://www.microsoft.com.
Note: If Internet Explorer is the default browser on the client system:
• The latest security updates for Microsoft VM (virtual
machine) must be installed on the client system.
• The security settings must be set no higher than
“medium”. If the settings are set to “high security”, the
browser will not be able to login to the DX-Series system
since the system needs write access to the client.
• The “Play animations in web pages” item in the Internet
Options/Advanced/Multimedia menu must be enabled.
• Mozilla Suite 1.7 on Solaris 10
You can download this software from
http://www.mozilla.org.
• Firefox 1.0.6 on Windows
You can download this software from
http://www.mozilla.org.
• Java Plug-in 1.4.2 or later
You can download this software from
http://www.java.com
SCSI-2 Specification 0
The SCSI-2 communications specification is the proposed American National
Standard for information systems, dated March 9, 1990. Copies may be obtained
from:
Global Engineering Documents
15 Inverness Way, East
Englewood, CO 80112
(800) 854-7179 or (303) 397-2740
Quantum DX3000 and DX5000 User’s Guide xiv
Contacts Quantum company contacts are listed below.
Quantum 0
Quantum
P.O. Box 57100
Irvine, CA 92619-7100
(949) 856-7800
(800) 284-5101
Technical Publications 0
To comment on existing documentation send e-mail to:
doc-comments@quantum.com
Visit the Quantum home page at: 0
http://www.Quantum.com
Customer Support 0
The Quantum Customer Support Department provides a 24-hour help desk that
can be reached at:
North/South America: (949) 725-2100 or
(800) 284-5101
Asia/Pacific Rim: (International Code)
+61 7 3862 4834
Europe/Middle East/Africa: (International Code)
+44 (0) 1256 848748
Send faxes for the Customer Support Department to:
North/South America: (949) 725-2176
Asia/Pacific Rim: (International Code)
+61 7 3862 4677
Europe/Middle East/Africa: (International Code)
+44 (0) 1256 848777
Quantum DX3000 and DX5000 User’s Guide xv
Storag e C are Guardian
To contact the Customer Support Department use the following web/ E-mail
addresses:
North/South America: www.quantum.com/askaquestion
Asia/Pacific Rim: apachelp@quantum.com
Europe/Middle East/Africa: eurohelp@quantum.com
StorageCare Guardian 0
StorageCare Guardian is a remote monitoring and diagnostic solution that enables
Quantum to proactively monitor the health of Quantum products, use diagnostic
data to predict possible failures, and determine whether or not the problem
involves a Quantum product or other critical component in the environment.
Benefits StorageCare Guardian gives the customer added assurance that Quantum will
make sure its products are running optimally to ensure maximum operational
efficiency. Deploying this solution is easy and enables customers to minimize the
costs associated with system downtime and service issues should a problem arise.
More Reliable
Backups
Faster Resolution
Time
Quantum DX3000 and DX5000 User’s Guide xvi
Through continuous 24x7x365 monitoring, StorageCare Guardian proactively
checks Quantum systems for common errors and alerts the customer when a
Quantum product is underperforming. By proactively identifying red flags, the
risk of failed backups and machine downtime can be mitigated.
When the system is down, StorageCare Guardian provides the necessary
diagnostics data that enables Quantum to identify the root cause and expedite the
problem resolution process. Problems that used to take days to fix can now be
fixed in minutes. When problems require onsite support, field engineers will have
better information along with the right parts necessary to fix the problem.
StorageCare Guardian allows Quantum to 0
• Monitor diagnostic data related to Quantum products
• Receive alarms that notify Quantum of issues at the customer site
StorageCare Guardian
• Run diagnostic utilities to more quickly determine the root cause of issues
• Initiate remote connection to remote management interface to get more indepth information about the health of your Quantum product.
• Distribute software/firmware upgrades - this will be available as a future
enhancement
Product Features 0
• Continuous Monitoring - Proactive 7x24x365 monitoring of Quantum
products enabling Quantum Support to be alerted on events such as errors or
marginal conditions that are defined by the user.
• Root Cause Diagnosis - Allows Quantum to quickly isolate and identify the
root cause of a problem.
• Rapid Problem Resolution- Quantum can rapidly recommend and/or
implement the corrective actions needed to resolve a problem ensuring
minimal impact to the IT environment.
• Quantum Remote Software Update - Distributed software update capability
allows fast updates to agent software and Quantum hardware installed at
customer sites
• Real-time Data Collection - Instant on-demand or scheduled diagnostic data
collection from Quantum products as well as the ability to run user-defined
data collection scripts from agent.
• Access Management - Customer has full control over Quantum's access rights
and privileges.
• Audit Logging - Audit logs are kept for all communications to and from the
agent.
How it works: 0
1 Customers can download the StorageCare Guardian agent software from
http://www.quantum.com/guardiandownload.
2 Customer installs the StorageCare Guardian agent on any Windows 2000/
2003/XP or Solaris 8/9 server located at the customer’s site.
3 The StorageCare Gu ar dian agent monitors Quantum products, and provides
information and updates to the Quantum Enterprise Server that resides at
Quantum Support.
4 If an error or problem is detected, Quantum queues a request to the
StorageCare Guardian agent for data collection or real-time access to the
system.
Quantum DX3000 and DX5000 User’s Guide xvii
Storag e C are Guardian
5 The StorageCare Gu ar dian agent checks access policy settings to determine if
access is allowed.
6 If approved, the information is transferred to Quantum, or a remote
connection is initiated.
7 Quantum Support will diagnose the problem and, if necessary, send the
needed parts and/or field personnel to resolve the issue.
Quantum can identify if the backup problem is not associated with the Quantum
device and then direct the customer to resolve the issue with appropriate thirdparty vendor.
Quantum DX3000 and DX5000 User’s Guide xviii
Chapter 1
1DX3000 and DX5000 System
Description
This chapter describes the DX3000 and DX5000 system and its
components. The chapter consists of:
• Overview
• Features and Benefits
• DX3000 and DX5000 Systems
• Hard Drive Storage
• Supported RAID Configurations
• Typical Configurations
Overview 1
The DX3000 and DX5000 Enhanced Backup Solution utilizes a disk-based
backup system to complement a tape library. This solution addresses the
most important problems facing Information Technology professionals:
• Time Required for Backup
• Confidence in Completing the Backup
• Time to Restore Data
Quantum DX3000 and DX5000 User’s Guide 1
Chapter 1 DX3000 and DX5000 System Description
Features and Benefits
Time Required for Backup 1 Not only is the amount of data that needs to be backed up growing, but
the time window for performing the backup is shrinking due to the
impact of global operational expansion. Adding more tape drives is no
longer an efficient way to reduce the time required for backup.
Confidence in Completing the Backup
Time to Restore Data 1 The time required to restore data from a tape library is determined by
Confidence in completing the backup job within the backup window can
be very low because of time constraints or “hang ups” during the backup
1
process due to errors generated by mechanical problems. If these types of
errors could be eliminated by removing issues that are inherent in any
mechanical device, confidence in the backup job completing would
improve greatly.
how long it takes to mount a cartridge in a tape drive and find the proper
position on the tape. This can take several minutes and then the restore
time is also reduced by the tape drive transfer speed. Restoring data from
hard drives (emulating tape cartridges) improves restore time by
eliminating the time required to load a cartridge and transfer speed
restrictions.
Features and Benefits 1
Both the DX3000 and DX5000 systems provides the following features
and benefits:
• High availability features:
•RAID 5 file system
• Event monitoring and logging
• Redundant cooling, power supplies, and disk parity protection
• Global spare (DX5000 Only) and hot-swappable hard drives
• Flexible alert notification including e-mail and SNMP traps
• Serial ATA II drive technology
Quantum DX3000 and DX5000 User’s Guide 2
Chapter 1 DX3000 and DX5000 System Description
Features and Benefits
• Restore latency under 10 seconds
• Two iSCSI interfaces
• 10/100/1000 BaseT Ethernet interface for auxiliary management
functionality (web based management)
• Browser based remote management system that provides status and
configuration options
• Rack space requirements:
• DX3000 - 2U per chassis
• DX5000 - 5U per chassis
•Virtual disk creation
• Tape Drives Emulated:
• Quantum DLT7000
•HP LTO 2
• Libraries Emulated:
• ATL P1000
• Quantum P7000
• Supported by every major backup software vendor
• Installs in a standard rack with a minimum depth of 30 in (76.2 cm)
Note: The DX3000/DX5000 must be installed in a restricted access
location per specification EN69050-1. This system must only
be installed by qualified IT service personnel. This is required
to prevent untrained personnel from allowing body parts or
electrically conductive items to penetrate into the interior of
the system when replacing or installing drives, fans, and
power supplies.
Quantum DX3000 and DX5000 User’s Guide 3
Chapter 1 DX3000 and DX5000 System Description
DX3000 and DX5000 Systems
DX3000 and DX5000 Systems 1
The system takes advantage of high speed hard drives to greatly reduce
the time required for backup/restore functions and also improve
confidence in completing the backup in the time allowed.
The DX3000 and DX5000 systems are both backup devices based upon
high speed disk drives instead of tape drives. Refer to the following
figures:
• DX3000 System
• DX5000 System
Figure 1 DX3000 System
Figure 2 DX5000 System
Quantum DX3000 and DX5000 User’s Guide 4
Chapter 1 DX3000 and DX5000 System Description
DX3000 and DX5000 Systems
Table 1 DX3000/DX5000
Capacity Specifications
DX3000 System Components
DX Model
(with Drive
Size)
DX3000 (500
GB drives)
DX5000 (500
GB drives)
Number of
Tape Drives
Up to 32 virtual
tape drives
Up to 64 virtual
tape drives
Number of
Cartridges
400 cartridges per
LUN (800 max)
400 cartridges per
LUN (1600 max)
Usable
Capacity
1.3 TB to 3.5
TB
4.5 TB to
10.0 TB
Both the DX3000 and the DX5000 use the same hard drive sleds, however,
the chassis and other system components differ between the two systems.
Refer to the following sections:
• DX3000 System Components
• DX5000 System Components
The DX3000 system houses the following components:
1
• Drive sleds (four or eight drive sleds per storage array) (qualified IT
personnel serviceable)
• Two redundant power supplies (qualified IT personnel serviceable)
• Redundant fan modules located internally (qualified IT personnel
serviceable)
• Motherboard, CPU, and memory (Quantum Field Service Only)
• RAID controller (Quantum Field Service Only)
• Optional Optyon™ Fibre Channel/compression board (Quantum Field
Service Only)
The qualified IT personnel serviceable components are removed and
replaced either through the front or back of the system (see
Quantum DX3000 and DX5000 User’s Guide 5
figure 3).
Chapter 1 DX3000 and DX5000 System Description
DX3000
Quantum
H
12
PS
STATUS
DX3000 and DX5000 Systems
Figure 3 DX3000 System
Components
DX5000 System Components
Power and reset buttonsDrive sleds
Fibre Channel ports (optional Optyon™ card)
Power supplies Ethernet ports
Keyboard, VGA,
parallel and COM
ports (service only)
The DX5000 system houses the following components:
1
• Drive sleds (twelve or twenty four drive sleds per storage array)
(qualified IT personnel serviceable))
Note: The DX5000 system with 24 hard drives requires two Optyon
Fibre Channel compression cards if Fibre Channel
compression is enabled.
• Four redundant power supplies (qualified IT personnel qualified)
• Redundant fan modules located at the back of the unit (trained IT
personnel serviceable)
• Motherboard, CPU, and memory (Quantum Field Service Only)
• RAID controllers (Quantum Field Service Only)
• Optional Optyon™ Fibre Channel/compression board (Quantum Field
Service Only)
The qualified IT personnel serviceable components are removed and
replaced either through the front/back of the system or by removing the
top cover (see figure 4
Quantum DX3000 and DX5000 User’s Guide 6
).
Figure 4 DX5000 System
Components
Chapter 1 DX3000 and DX5000 System Description
DX3000 and DX5000 Systems
Drive sleds
Center
fans
Ethernet
ports
Keyboard, VGA,
parallel and COM
ports (service only)
Power and reset buttons
Power suppliesLeft-hand blower Right-hand blower
Fibre Channel ports (optional
Optyon™ cards)
Quantum DX3000 and DX5000 User’s Guide 7
Chapter 1 DX3000 and DX5000 System Description
Hard Drive Storage
Hard Drive Storage 1
Serial ATA hard drives (see figure 5) are the heart of both the DX3000 and
DX5000 systems.
Figure 5 DX3000 and DX5000
Hard Drives
Hard drive sled
Caution: Removing hard drives during system operation may cause
loss of data or degraded system performance. Contact
Quantum customer support (see
to report any hard drive failure.
The hard storage area can be used in the following ways:
• Virtual Tape Storage
• Virtual Disk Storage
Quantum DX3000 and DX5000 User’s Guide 8
“Contacts” on page xv)
Chapter 1 DX3000 and DX5000 System Description
Hard Drive Storage
Virtual Tape Storage 1
Virtual tape storage allows the storage space on these hard drives to
appear to the backup application as tape cartridges (DLT or LTO). Data is
stored on the hard drives through an interface that appears as a DX3000
or DX5000 system. This allows backup applications to recognize and
integrate a DX3000/DX5000 system into a data center environment just
like a typical tape library.
The area dedicated to virtual tape storage is set during the initial
configuration of the system and cannot be changed without losing
existing data on the virtual tape cartridges.
Virtu al Disk Storage 1
Virtual disk storage allows you to dedicate a certain amount of hard drive
capacity for disk storage. Once the virtual disks are configured and
mapped to either a iSCSI or Fibre Channel port, the virtual disks appear
to the host as a SCSI disk device. This disk device is assigned a drive letter
(example C:) and must be formatted like a standard hard drive. Data can
then be stored and read.
The area dedicated to virtual disk storage is set during the initial
configuration of the system and cannot be changed without losing
existing data on the virtual disk drives.
Quantum DX3000 and DX5000 User’s Guide 9
Chapter 1 DX3000 and DX5000 System Description
Supported RAID Configurations
RAID Sets 1 The DX3000/DX5000 system is divided into RAID sets. The number of
RAID sets differs depending on the system:
• DX3000 can contain two RAID sets:
• The first RAID set is made up of either the first four drive sleds
(drive sleds 1-4) in a four drive system or eight drive sleds (drive
sleds 1-8) in an eight drive system.
• If the original system was upgraded from four to eight drives, the
second RAID set is made up of the last four drive sleds (drive
sleds 5-8).
• DX5000 can contain four RAID sets:
• The first RAID set is made up of the first six drive sleds (drive
sleds 1-6).
• The second RAID set is made up of the next six drive sleds (drive
sleds 7-11 with drive 12 as a hot spare).
• The third RAID set is made up of the next six drive sleds (drive
sleds 13-18 if installed).
• The fourth RAID set is made up of the next six drive sleds (drive
sleds 19-23 with drive 24 as a hot spare).
Each RAID set can sustain a single hard drive failure and can hold a
maximum of 160 virtual tape cartridges (80 cartridges per LUN).
Supported RAID Configurations 1
RAID is short for Redundant Array of Independent (or Inexpensive)
Disks, which is a category of hard disk drives that employ two or more
drives in combination for fault tolerance and performance. There are a
number of RAID levels in use today such as 0, 1, 3, 5, and 10.
The DX3000 and DX5000 systems support RAID 5 with hot spare
configurations (Only DX5000 systems can be configured with a hot
spare).
Quantum DX3000 and DX5000 User’s Guide 10
Chapter 1 DX3000 and DX5000 System Description
Typical Configurations
RAID 5 Configuration 1 The RAID 5 configuration is the most common RAID level in use today.
RAID 5 minimizes the write bottlenecks of other RAID levels by
distributing parity stripes over a series of hard drives. In doing so it
provides relief to the concentration of write activity on a single drive,
which in turn enhances overall system performance. Instead of allowing
any one drive in the array to assume the risk of a bottleneck, all of the
drives in the array assume write activity responsibilities. The distribution
frees up the concentration on a single drive, improving overall subsystem
throughput.
The RAID 5 parity encoding scheme maintains the system’s ability to
recover any lost data should a single drive fail. This can happen as long as
no parity stripe on an individual drive stores the information of a data
stripe on the same drive. In other words, the parity information for any
data stripe must always be located on a drive other than the one on which
the data resides (see figure 8
Figure 6 RAID 5 Configuration
).
Data stripe
Data stripe A
Data stripe B
Data stripe C
Data stripe D
Data stripe E
A0 A1 A2 A3
B0 B1 B2
C0 C1 3 parity C3 C4
D0
1 parity
Drive 0 Drive 1 Drive 2 Drive 3 Drive 4
2 parity
E1 E2 E3 E4
D2 D3 D4
4 parity
0 parity
B4
Typical Configurations 1
The DX3000/DX5000 system has many advantages over typical tape
cartridge based systems such as faster data transfer, instant availability,
and greater reliability.
Quantum DX3000 and DX5000 User’s Guide 11
Figure 7 DX3000/DX5000
System Plus a Tape Library
Chapter 1 DX3000 and DX5000 System Description
Typical Configurations
To take advantage of the DX3000/DX5000 system speed and reliability
and still have the safety of off-site storage, Quantum recommends
exporting the data from the DX3000/DX5000 system to an automated
tape library (see figure 9
). This configuration still allows fast backup and
restores as well as the saftey of off-site backups on tape cartridges.
Storage management software applications often refer to this operation as
“cloning” or “vaulting.” Check with your software supplier for
information on enabling this feature.
Client
Data
Server
DX3000/DX5000
SAN
Tape Library
(ex. Quantum P4000)
Quantum DX3000 and DX5000 User’s Guide 12
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