2

Industry WavesBackup and recovery evolution

Version 1.0

Majority of companies use tape

Tape one size fits all Backup once per day Tape recoveries slow

& unreliable Administrators do all

recoveries

Today

Disk based backup becoming cost effective

Archive and Backup diverge

Recovery in minutes or seconds

Continuous backup End user recovery Self healing backups

Future

3

Rapid and Reliable Recovery

Recovery is unreliable and painful Too slow and expensive to recover files

typical recovery takes hours or days (slow, expensive)

Recoveries and unreliable 42% of companies had failed recovery in past

year 50% of customers wish for online backup

verification Data protection is labor intensive All recoveries go through the server admin Solution with DPM Designed for fast recovery Enables a whole new recovery scenario–end

users: files, Admins: servers Snapshots enable multiple recovery points Recoveries are assured through verification

Customer Data Protection Pain PointsCustomer Needs: Faster Recovery

4

Continuous

and efficient

protection

Backup is too complex, slow, and inefficient Shrinking backup window

Growth in data makes it too difficult and time consuming to back up

Backups too slow/lots of manual scheduling Mandated disaster recovery plans 24 hours of data loss assumed with tape Tape as one size fits all (file and server recovery,

offsite protection and long term archive) Tape inconvenience and unreliability of is # 1

challenge

Solution with DPM Faster and More Efficient Backup

Never do a full backup from a production server again

Avoid the shrinking backup window

Customer Needs: Eliminating Backup Window

Customer Data Protection Pain Points

5

Current backup products are too complex, costly Companies spend too much time and money on

backup Labor is the majority of backup cost Branch office data protection is cumbersome Massive data growth increases costs Too many tapes Most disk-based backup solution are cost prohibitive

Operational

Simplicity

Solution with DPM Designed to reduce TCO via continuous,

disk-based backup Automatic protection schedules = reduce

operational costs, increase efficiency Allows end users to easily recover their own

files Usability and easier management Integration into existing environment Industry standard hardware and software

Customer Needs: Simpler Solution, Lower costs

Customer Data Protection Pain Points

Microsoft – NDA Only6

What does DPM do?

Near continuous (hourly) protection of files DPM agent on file servers Byte-level changes transmitted to DPM

server

Multiple scheduled snapshots per day

Easy IT or End-User restore – fast from disk

7

DPM ServerDPM “Under The Hood”

Agent components: File System Filter: runs in kernel

mode File Agent service runs in user

mode Requires reboot of file server Each protected volume has

synchronization log Synchronization log 10% of volume

size Agent overhead 3-5%

Synchronization “Pull” model, synchronizations instigated by

DPM Asynchronous replication Two communication channels

Control commands - DCOM Data movement - DPM proprietary protocol

Replication unit of operation is protected volume

Check points: 2 min/10 MBs Byte level replication

Consistency Check Unexpected events create need

to resync replica Consistency Check does two

things Checks file by file for more recent

modified times If changed, all blocks associated

with file are check summed and appropriate blocks are replicated to DPM server

All open files are check summed irregardless

DPM Engine .NET application (managed code) Application state and configuration

data stored in SQL Protected data stores:

Replica Area is a mounted volume that is made up of replica of protected volume and the diff area

Transfer Area is an unmounted volume that contains the spill log

Non-blocking, distributed architecture

8

.NET application (managed code) All application state and configuration data stored

in full SQL Server database Protected data stored in the following places

Replica Area is a mounted volume that is made up of replica of protected volume and the diff area

Transfer Area is an unmounted volume that contains the spill log. Spill log holds data transferred from protected server but yet to be applied to replica.

Non-blocking, distributed architecture. All operations are autonomous of each other thus allowing system to scale to limits of hardware

DPM – Technology OverviewDPM Engine

DPM Server

File Servers

Active DirectoryClients

9

Agent components: File System Filter: runs in kernal mode,

implemented as mini-filter per W2K3 SP1 File Agent service runs in user mode

Requires reboot of file server before operating due to legacy (non-mini filters) to assure correct ordering

Each volume with protected object has synchronization log in hidden Volume System Information directory

Synchronization log is by default 10% of volume size but can be adjusted

Agent puts overhead of 3-5% on processor protected server

DPM – Technology OverviewAgent

File Servers

Active DirectoryClients

DPM Server

10

“Pull” model, all synchronizations instigated by DPM server

Asynchronous replication Two separate channels for communication

Control commands sent over DCOM Data movement sent over TCP/IP using DPM

proprietary protocol Replication unit of operation is the protected

volume Check points the lesser of 2 min or 10 MBs for

resumption of incomplete operations All file operations are replicated (rename, delete,

copy) along with all changed blocks, this is most similar to “byte level replication”

DPM – Technology OverviewSynchronization

File Servers

Active DirectoryClients

DPM Server

11

Various unexpected events create need to resync replica with source data (hard reboot of protected server, synchronization log overflow)

Sync with Consistency Check does two things Checks file by file for more recent modified

times then on replica If changed, all blocks associated with file

are check summed and appropriate blocks are replicated to DPM server

All open files are check summed irregardless Rolling process that traverses the entire

directory tree, not a snapshot that freezes volume at point in time

DPM– Technology OverviewSynchronization with Consistency Check

File Servers

Active DirectoryClients

DPM Server

12

Monitor

Monitor the health and status of your DPM server easily Set up automatic alerts via email

13

Report

Comprehensive reports show all data protection activity on the network

14

DPM/MOM Integration

Control and monitor multiple DPM Servers All alerts and events uploaded to MOM

15

Top 10 Reasons To Deploy DPM Recover files in minutes instead of hours Eliminate the backup window of your production

servers Shrink potential data loss down to 1 hour No more failed recoveries Get easy instant backup verification Enable end users to perform their own

recoveries Setup and protect your file servers in minutes Advanced functionality at low cost Remove tapes from branch offices and

centralize backups at datacenter

Rich out-of-box reporting and monitoring functionality

16

DPM Demo

Task : Configure Protection

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

DPM Walkthru

Task : End-User Restorefrom Windows Explorer

37

Original Files

38

Overwritten

39

Right-click on any file or directory

40

PVCPrevious Versions Client

is an applet that extends Windows

Explorer and Office applications with

this simple new tab.

Available since Windows Server 2003

and VSS.

Usually installed silently via

Group Policy

41

42

43

Open document

44

Keep the new oneAND

Restore the old one

45

Restore the old one

46

47

48

Software

Industry Partners

Hardware

49

© 2003-2004 Microsoft Corporation. All rights reserved.This presentation is for informational purposes only. Microsoft makes no warranties, express or implied, in this summary.