E2 evc 3-2-1-rule - mikeresseler

The 3-2-1 ruleMike ResselerProduct Strategist | @mikeresseler | @[email protected]

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AgendaWhy?What is the 3-2-1 rule?It’s all about layers and possibilitiesQ&A

Why?


Why are we talking about this?



Business Requirements

More applications and services faster

LowerIT cost

Enable the Always-On business

Modern Data Center

Virtualization Modern storage

Cloud

Access from any place any device

More and better IT services

Lower IT costs

1



Modern Data Center

Lower operational costs

Provision IT services faster

Strengthen security and control



LowerIT cost


Modern Data Center

Virtualization Modern storage Cloud

Lower operational costs

Provision IT services faster

Strengthen security and control



LowerIT cost


Modern Data Center

Virtualization Modern storage Cloud

24/7 operations No patience for downtime and data loss

Growing amount of data

Enable the Always-On BusinessTM

The 3-2-1 Rule

What is it?


History• As far as we know it...• Invented by Peter Krogh (photographer: dpbestflow.org/node/262)

There are two kinds of people in the world – those who have had a hard drive failure, and those who will


The 3-2-1 Rule

*Yes, technically “the cloud” is probably using a harddisk too

Three copies

Copy to diskBackup to folder

One copy offsite

Two media types*

Keep in safe


The 3-2-1 Rule


3 CopiesYou need (at least) 3 copies of your data


2 Different MediaThe data should be stored at least at 2 different media


1 Offsite1 of the copies should be offsite

3 Copies


Choices

Productionstorage

Different Media


Choices

Primary storage Primary storage Backup storage

Offsite


Tape

• Best price per GB• Does not consume power to be

stored

• Requires manual activities to be sent offsite

• 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• Reduce the complexity• Seed and collect services for large

transfers

• Upload /Download• What happens with your data• RTO might be slow

Layers


Layers & Possibilities• One solution fits all?• Multiple layers is a better defense• Why stop at 3-2-1?• Think further


Tiered approach• Sum the benefits

of different tiers• Neutralize 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 WorkloadsAndrew 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 & versioning, Email deleted items, AD 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 performance of the storage• 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 Datamover 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: Offsite archival

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

#1 GOAL: Extend retention AND offer offsite protection

Tape

• Require manual activities to go offsite

• 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

RPO/RTO

Price/Space

Tier-0: Storage snapshots

Tier-1: Small and fast JBOD

Tier-2: Large and cheap disk storage

Tier-3: Offsite archival


I have a dream…

Tier 3

Tier 3

Tier 2Productionstorage

Tier 0

Tier -1

Tier 1


I have a dream…

Tier 3

Tier -1

Tier 0 Tier 1

Q&A

Thank you!

Technology

E2 evc 3-2-1-rule - mikeresseler