Dell PowerVault DL2100 User Manual download pdf

Dell PowerVault DL2100 powered by Symantec

Backup Exec 2010: Source deduplication

advantages in a mail server scenario

TEST REPORT

MAY 2010

Executive summary

Companies with remote locations often back up remote workers’ data via wide-area networks (WANs) to avoid the

cost of local backups and local support staff. A large portion of the remote data remains constant from day to day,

which means backup systems waste WAN and storage resources by transferring multiple copies of the same data

to the central office. Source deduplication eliminates this inefficiency by transferring only unique chunks of data

across the wire.

Symantec commissioned Principled Technologies (PT) to measure the source deduplication capabilities of the

Dell

PowerVault

DL2100 powered by Symantec

Backup Exec

2010 when backing up a Microsoft

Exchange Server 2007 (Exchange 2007) solution. As Figure 1 shows, this solution delivered a 10.8 to 1

deduplication ratio over a simulated 2-week period. This indicates that by deduplicating the data at the source, the

solution reduced the amount of data traveling over the WAN connection by a factor of more than 10, greatly

reducing WAN traffic, media server storage capacity needs, and administrative overhead, which all translate to

reduced costs.

Symantec Backup Exec 2010 lets businesses easily eliminate duplicate backup data—in our case, Exchange

2007 mail data. The backup technician uses the same familiar Backup Exec console to simply select the

deduplication storage device and select the option for remote access of the media server while configuring the

backup job.

Source deduplication in Symantec Backup Exec 2010 eliminates redundant data directly on the source machine

before that data makes its way to the media server. The remote agent compares the chunks of data on the source

to the existing backup chunks on the media server, and if it finds a duplicate, only sends a marker to the media

server. This process greatly reduces the amount of data that flows to the media server and lowers the amount of

data the media server must store. Source deduplication also enables bandwidth optimization as part of the

backup process. In our test case, Symantec Backup Exec 2010 reduced the time window for a full backup from 4

hours and 19 minutes to an average of 2 hours and 29 minutes.

Figure 1: The source deduplication scenario we tested.

KEY FINDINGS

• The Dell PowerVault DL2100, powered by

Symantec Backup Exec 2010 performing source

deduplication, achieved an average deduplication

ratio of 10.8:1 on our Exchange 2007 backup tests

during a simulated 2-week period.

• The Dell PowerVault DL2100, powered by

Symantec Backup Exec 2010, backed up the

entire Exchange 2007 storage group in an

average of 2 hours and 29 minutes after the initial

backup when performing source deduplication, as

opposed to 4 hours and 19 minutes when not

performing source deduplication.

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Summary of Contents

Page 1 - Executive summary

Dell PowerVault DL2100 powered by Symantec Backup Exec 2010: Source deduplication advantages in a mail server scenario TEST REPORTMAY 2010Exe

Page 2 - Test results

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Page 3 - Workload

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Page 4 - Test configuration

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Page 5

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Page 6 - Test methodology

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Page 7

15 Principled Technologies, Inc.: Dell PowerVault DL2100 powered by Symantec Backup Exec 2010: Source deduplication advantages in a mail server sc

Page 8

16 Principled Technologies, Inc.: Dell PowerVault DL2100 powered by Symantec Backup Exec 2010: Source deduplication advantages in a mail server sc

Page 9 - Organization Administrators

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Page 10

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Page 11

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Page 12

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Page 13 - Performing the test

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Page 14

5 Principled Technologies, Inc.: Dell PowerVault DL2100 powered by Symantec Backup Exec 2010: Source deduplication advantages in a mail server sce

Page 15 - Servers

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Page 18

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