Pankaj Jaiswal,Systems Engineer

Presenter:

The 3-2-1 Data Protection Rule

Why?

The 3-2-1 Rule

Layers and possibilities

Agenda

Q&A

Business Requirements

More

applications and

services faster

Lower

IT cost

Enable the

Always-On business

Modern Data Center

Virtualization Modern

storage

Cloud

Access from any place

any deviceMore and

better IT

services

Lower IT costs

1

Enable the

Always-On business

Modern Data Center

Lower operational

costs

Provision IT

services fasterStrengthen security

and control

More

applications and

services faster

Lower

IT cost

Enable the

Always-On business

Modern Data Center

Virtualization Modern storage Cloud

Lower operational

costs

Provision IT

services fasterStrengthen security

and control

More

applications and

services faster

Lower

IT cost

Enable the

Always-On business

Modern Data Center

Virtualization Modern storage Cloud

24/7 operationsNo patience for

downtime and data loss

Growing amount

of data

Enable the Always-On BusinessTM

The 3-2-1 Rule

What is the 3-2-1 Rule?

History

• As far as we know it...

There are two kinds of people in the world —

those who have had a hard drive failure

and those who will.

• Invented by Peter Krogh (photographer:

dpbestflow.org/node/262)

The 3-2-1 Rule

The 3-2-1 Rule

*Yes, technically the cloud is probably using a hard disk, too.

Three copies

One copy off site

Two media types*

Three copies

• You need (at least) 3 copies of your data

Two different media

• The data should be stored at least at 2 different media

One off site

• 1 of the copies should be offsite

Let’s dive deeper in the off site part…

Tape

• Best price per GB

• Does not consume power to store

• Requires manual activities to be sent off site

• Restores are not satisfying for demanding

RTO

Remote site

• All in the hands of the owner

• Disk-based

• Staff needs to maintain two sites

• Capital expenses for building and hardware

rarely used

Co-location

• Same benefits as an owned remote site

• Rental of the “building”

• Again, staff need to maintain two sites

• Capital expenses for hardware that is

rarely used

Cloud

• No expense for building or hardware

• Pay-as-you-go model

• Reduced complexity

• Seed and collect services for large

transfers

• Upload/download

• What happens with your data

• RTO might be slow

Cheap storage...

Restore 1 MB email

Email sits in 500 GB backup set

10mbit/sec internet connection

116 hours to download the backup set

5 days!!!

Storage is not enough

You need compute

Browse cloud backups (from locally)

Restore without d/l everything

Retrieve from the cloud

Recover in the cloud

No hassle...

Layers…

Layers and possibilities

• One solution fits all?

• Multiple layers is a better defense

• Why stop at 3-2-1?

• Think further

Tiered approach• Add the benefits of different

tiers

• Neutralizes the limits of each

tier

• Statistics are your best friends

• Most of the restores come from

recent restore points

• Focus on your RTO, but design

around only the first tier of your

data protection strategy

“Files are rarely re-opened. Over

66% are re-opened once and 95%

fewer than five times.”

“Files re-opens are temporally

related. Over 60% of re-opens

occur within a minute of the first.”

Measurement and Analysis of Large-Scale Network File System Workloads

Andrew W. Leung, Shankar Pasupathy, Garth Goodson, Ethan L. Miller, 2008

Tier- (-1): Application protection

• Single point of failure (if the app fails…)

• Consume production storage (but limited)

• Leverages the application

• No impact on the hypervisor

• Fast restores

• Possibly user restore possibilities

#1 GOAL: First defense starts within the application (e.g. SharePoint

deleted items and versioning, email deleted items, Active Directory

deleted items, SQL log transaction…)

Tier-0: Storage snapshots

• Single point of failure (inside the same storage they

protect)

• Consume precious production storage

• No application consistency (or hard to have)

• A volume contains multiple VMs

• Leverage storage performance

• Low impact on the hypervisor

• Fast restores! Content is non deduplicated

• With Veeam®, you can add application consistency

#1 GOAL: High-frequency copies with low impact on production

Tier-1: Small and fast JBOD

• Hold few restore points

• The vast majority of restores come from the last

week

• A proper server with Windows or Linux (runs

Veeam data mover locally)

• Multicore CPU and good amount

of RAM

• Local disks or DAS

• Mix SSD and HDD

#1 GOAL: Offer fast restores!

Tier-2: Large and cheap

disk storage

• Still local and on disk to allow decent RPO and RTO

• Any disk solution with low $/GB

• SAN

• Deduplication appliance

• NAS

• Software solutions

• …

#1 GOAL: Extend retention period

Tier-3: Off-site archival

Can be added after tier-2 or directly after tier-1

#1 GOAL: Extend retention AND offer off-site protection

Tape

• Requires manual activities to go off site

• Large amount of data can be moved on restores

Cloud

• Directly reachable via Internet connection

• A dumb storage space or an active

component?

• Remote compute power allows direct

restores from cloud repositories

Overall design

Tier-0: Storage snapshots

Tier-1: Small and fast JBOD

Tier-2: Large and cheap disk storage

Tier-3: Off-site archival

I have a dream…

Production

storage

How to Make Tape out of DiskLow end:

• Just use rotated drives!

• Supported for both primary and Backup Copy jobs

Mid-range:

• Keep an off-site copy off-prem (cloud)

High end:

• Use hardware-based WORM solutions.

Q&A

Thank you!

Images• Slide 19: https://www.flickr.com/photos/29276244@N03/3200630853/

• Slide 20: https://www.flickr.com/photos/21450297@N06/5855847053/

• Slide 21: https://www.flickr.com/photos/15802578@N00/10629876605/

• Slide 23: http://www.flickr.com/photos/7729940@N06/6530383417/

• Slide 24: https://www.flickr.com/photos/20705353@N00/3358600080/