Upload
truongquynh
View
215
Download
0
Embed Size (px)
Citation preview
POWER SOLUTIONS March 200436
Simplifying Enterprise Backup and Restore Operations
Using BakBone NetVaultThis article examines the deployment, configuration, and manageability of BakBone!
NetVault™ tape backup and restore software. Three enterprise data backup scenariosare profiled, using NetVault with Dell™ PowerEdge™ servers, Dell PowerVault™ storage,and a Dell/EMC! storage area network.
BakBone® NetVault™ 7 software is based on a modular,
object-oriented architecture that enables administra-
tors to integrate tape backup and restore operations seam-
lessly with a variety of operating systems, databases and
messaging applications, storage devices, and storage area
networks (SANs). NetVault can be used to configure and
deploy any storage device, as long as the client’s operat-
ing system (OS) recognizes the device and can commu-
nicate with it through a network adapter. As enterprise
IT environments grow and change, NetVault can help
administrators scale out storage configurations quickly
and flexibly to meet business needs.
A NetVault backup and restore configuration com-
prises three main components:
• NetVault server: A backup server that manages
networked as well as direct attach storage devices,
and also maintains a NetVault database of sched-
ules, indexes, logs, and device information
• Client: A host server that participates in the net-
worked backup and restore process
• SmartClient™: A NetVault client that also is config-
ured with direct attach storage used in the backup
and restore process
Using Dell™ PowerEdge™ servers, Dell PowerVault™ stor-
age, and a Dell/EMC® SAN, BakBone engineers profiled
three common enterprise computing configurations at Dell
labs in October 2003. For each scenario, BakBone engineers
installed, configured, and demonstrated NetVault running
a complete, error-free restore and backup operation.
Profile 1: Basic enterprise configuration Once engineers completed the hardware setup for the
basic enterprise configuration, installing the NetVault
software took approximately 15 minutes. The NetVault
software installation does not require administrators to
reboot the servers, which is particularly advantageous in
computing environments that cannot afford downtime.
Application Plugin Module™. To enhance NetVault
support for third-party database and messaging appli-
cations, administrators can install an optional Application
Plugin Module (APM™) from the NetVault server. BakBone
offers APMs for Oracle®, Sybase®, Informix®, and various
other applications. Using APMs, NetVault automatically
adds application-specific components to the backup and
restore selection criteria that appear on the NetVault
graphical user interface (GUI). From the common
NetVault GUI, administrators can manage all backup
and restore operations across the SAN, network attached
storage (NAS), wide area network (WAN), or local area
network (LAN).
As enterprise computing environments become more
complex, NetVault can help simplify administration through
policy-based job management tools that allow IT staff
to create editable, reusable job templates. Policy-based
administration can improve productivity and help reduce
human error by enabling administrators to monitor, manage,
STORAGE ENVIRONMENT
BY JOE GALLO
and edit multiple jobs as a single group, or set—and apply job tem-
plates to additional hosts as environments grow.
Profile 2: Enterprise SAN configuration A major objective in profiling the enterprise SAN environment was
to determine the amount of NetVault reconfiguration that would be
required to migrate from a direct attach SCSI Dell PowerVault 132T
tape library to a PowerVault 132T connected to a SAN. Building upon
the basic enterprise configuration in profile 1, BakBone engineers con-
nected additional servers to the SAN, installed a PowerVault 132T Fibre
Channel bridge module, and linked the bridge to a newly installed
host bus adapter (HBA) in the NetVault server. For this migration,
engineers performed three main NetVault configuration tasks: installing
NetVault SmartClient software on the two new SAN servers; identi-
fying the servers as clients within the NetVault server; and scanning
for shared drives.
Engineers reused the policy management sets they created for
the basic enterprise environment with slight modifications to the
software configuration to recognize the new shared SAN storage. The
NetVault process to reconfigure the direct attach storage model as the
SAN storage model described for this scenario took approximately
30 minutes.
Many backup and restore offerings require administrators to
install shared storage modules on every host that accesses SAN
storage. These modules typically require licenses, which can increase
storage costs. In comparison, NetVault software scans, discovers,
and configures shared storage from the NetVault server instead of
at each client—thereby helping to reduce installation time and lower
costs. For the enterprise SAN configuration profile, engineers quickly
configured NetVault to the shared storage option—which is required
only on the NetVault backup server.
A modular, object-oriented approach to storage architecture
enables NetVault to work with virtually all types of storage devices.
Because many administrators are more familiar with backup and
restore techniques involving tape drives and slots than physical disks,
NetVault displays physical disk space as virtual disk libraries (VDLs).
Having a common interface for managing different types of storage
media allows IT staff to implement new backup and restore strate-
gies quickly and flexibly.
For the enterprise SAN configuration, BakBone engineers cre-
ated a four-tape-drive, 30-slot VDL using a Dell/EMC® CX600 Fibre
Channel storage array. Engineers then created a backup policy to
back up the VDL. The policy also specified that a copy from the
VDL backup data be created on the PowerVault 132T tape library.
The NetVault VDL software configuration and the creation of a
backup policy were accomplished in minutes.
Profile 3: Enterprise NAS configurationIn an enterprise NAS environment, a NAS server such as the Dell
PowerVault 775N can be used as the NetVault backup server (see
Figure 1). After creating a direct SCSI connection between the
PowerVault 132T tape library and the PowerVault 775N server,
BakBone engineers installed the NetVault server software. The entire
NAS configuration—including VDL and tape library initializations
as well as policy management set creation—was completed in approx-
imately three hours.
When a PowerVault 132T tape library is directly attached to a
NAS device with NetVault installed, the maximum number of con-
current tape backup jobs is not restricted to the number of physi-
cal tape drives. That is, backup jobs can be copied to a VDL
before—or instead of—the physical tape device. Because VDLs can
be configured with an unlimited number of virtual tape drives, they
overcome the limitations of a physical tape drive library. In this way,
VDLs enable administrators to perform multiple backup jobs from
different servers concurrently.
Implementing VDLs also can help administrators improve tape
backup performance by eliminating the bottlenecks that can occur
between data and tape when backup data streams are slow. After
the initial backup, NetVault copies the backup data from the VDL
to the physical tape library at SCSI bus speeds.
Enterprise-class restore and backup Modular, object-oriented architecture enables adminis-
trators to deploy various NetVault configurations quickly
and easily. In addition, NetVault can help simplify sys-
tems management in heterogeneous environments
by allowing IT staff to administer both tape-based and
disk-based storage from a common GUI. Such flexibility
and ease of use help make NetVault a cost-efficient
backup and restore option for scalable enterprise com-
puting environments.
Joe Gallo ([email protected]) is a senior sales engineer for BakBone
Software, Inc. He specializes in developing backup and disaster recovery plans
for distributed enterprise computing environments.
STORAGE ENVIRONMENT
www.dell.com/powersolutions POWER SOLUTIONS 37
PowerEdge 2650 serverRed Hat� Linux� Advanced
Server 2.1
PowerEdge 2650 serverRed Hat Linux Advanced
Server 2.1MySQL™ APM
PowerEdge 2650 serverNovell� NetWare� 6.0
PowerEdge 6650 serverMicrosoft� Windows� 2000 Server
Microsoft SQL Server™ APM
LAN
LANPowerConnect™ 5224Gigabit Ethernet switch
PowerVault 132Ttape library
PowerVault 775N NAS serverNetVault server
NetVault virtual disk library
Figure 1. Enterprise configuration using NAS