tiered storage presentation -storage decisions

8/2/2019 Tiered Storage Presentation -Storage Decisions

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Planning and Building

Tiered Storage

Brad ONeill

Senior Analyst and ConsultantTaneja Group, Inc.


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Agenda

What is Tiered Storage

A Planning Strategy for Tiered Storage

Example Deployment Scenarios

Conclusions

Q&A


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A Definition of Tiered Storage

The deployment of two or more classes of

disk storage within a primary or

secondary storage environment, wherein

the residence of data across these

classes of storage is determined bybusiness-driven variables.

Sounds Complex, But


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Tiered Storage Is Straightforward

1. You deploy multiple classes of storage

FC, SCSI, SATA, TAPE

2.You might move data from various apps across those storage

classes, or, just originate your data assets on the right class

Online migration, disk archiving, disk backup

3. You do this to create efficiencies in time, money or otherresources

Improve operations, boost ROI, increase productivity


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The Net-Net on Tiered Storage

Forget all buzzwords. Its about data placement

on cost/performance appropriate storage.

Largely manual, not automated

50% of tiered storage: originate on the right platform

Yes, future ILM dreams will leverage the storage classes

we create today

What really kicked-off this trend? ATA/SATA.

To reduce primary and secondary storage costs

To increase recovery and data protection measures

Critical mass of vendor announcements

53% of surveyed users intend to deploy disk by 2005!


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Something the industryforgot to mention


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Tiered Storage MANAGEMENT!

BEFORE you deploy, you need a tiered

storage management strategy!

BEFORE you evaluate vendors, you need

a tiered storage management strategy!

BEFORE you even think about devices,

you need a tiered storage management

strategy!


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Fail to Plan, Plan to Fail!

Our first tiered storage deployment

wasnt planned as such. We jumped atthe cost savings. We bought ATA arrays

and started loading up If I could do it

over, I would have spent a lot more time

on planning.

Director of Storage, Retail,

California


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TIERS OF STORAGE

H O S T S

42 3

Applications Web Database Backups

STRATEGY!

1

YOUR STRATEGY WILL DETERMINE SUCCESS!


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5 Planning Steps for Tiered Storage

1. Define your business drivers: Why do

this?

2. Define storage asset classes and traits

3. Evaluate architectural choices

4. Go out and whip your vendors

5. Deploy your plan


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1. Define Your Business Drivers

Do you seek to improve data protection?

(RTO, RPO, Availability, Backup windows)

Are you solving compliance requirements?

(disk-based archives, tape archives, accessibility)

Are you aiming to reduce capital outlays?

(Footprint control, utilization improvements)

Can you need human management efficiencies?

(Few heads, higher managed capacities, wider roles)


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this?




5. Deploy your plan


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2. Create Asset Groups and Traits

ID the data assets against descriptive groups.

Make these grouping more specific or less specific as required!

BUSINESS-CRITICAL (Primary data. Traditional 5 9s, High availability)

BUSINESS-OPERATIONS

(Primary data. Share-intensive, reference data, aging data)

PROTECTION and ARCHIVAL

(Primary or Secondary data. Reference, copies and protection)

LONG-TERM ARCHIVAL

(Secondary data. No day-to-day use, long-term retention)


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Assign All Your Storage Using

Resources To Asset Groups!

ASSET GROUPS

H O S T S


Which Group?

Biz Critical Biz Ops Protection/Archival Long-Term


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EXAMPLE ASSET GROUPINGSBUSINESS-CRITICAL

My Oracle databases

Our ERP data all of it

BUSINESS-OPERATIONSOur MS Exchange

Departmental Files

PROTECTION and ARCHIVAL

Copies of SQL Server data sets

Completed trade contracts

All compliance information

LONG-TERM ARCHIVAL

Stuff we dont use but have to keep

Our last ditch DR bucket


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2. Create Asset Groups and Traits ID concrete STORAGE TRAITS for each ASSET GROUP:

Uptime Goals

Performance requirements

Protection needs

Mirrors/Snapshots/Other SW reqs

Security and access

Fully Loaded Target Price/Managed TB

Asset Groups + Storage Traits = Storage Tiers


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How Did We Get Our Tier Definitions?

All data assets are assigned to groups

The traits of each group were defined

As a Result, We Then Know:

The expected service level from each storage tier

The desired price-points for each storage tier

Therefore, We Have A Tiered Storage Plan!

2. Create Asset Groups and Traits


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Asset Groups Drive Your Tier Choices

ASSET GROUPS/STORAGE TIERS

H O S T S

42 3


Groups/Tiers

Biz Critical Biz Ops Protect/Archival Long-Term

1


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this?




5. Deploy your plan


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3. Evaluate Architecture Choices

Guidelines Weve Heard From Your Ranks:

1. Do Not Create Net-New Management

2. Look beyond array pricingalone

3. Take an infrastructure-wideapproach

4. Execute your tier strategy in stages


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So, Where To Begin?Your Tier 1 Business Critical Storage Sets The Pace.

Your Crown Jewel Assets

Most Expensive Storage Investment

Disruption and Change Management are painful

Your High Bar for Storage Management practices

95% of Tiering Strategy centers on Tiers 2 and 3:

Business Operations and Protection/Archiving Tiers How Do We Improve our Tier One ROI?

How Do We Get Less Critical Data on Cost-Appropriate

Storage?

How do we leverage disk to improve data protection?


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Key Points For Tier 2 Evals:Business Operations Storage

SATA pricing is still all over the map! Examine best of

breed approaches vs. your asset groups From under $4000 to $15,000+ per TB!

Protection matters. What do you need?

RAID support in SATA typically 0,5

Given asset groups, how much performance? SATA performance gains are real and coming fast

Smaller cache sizes in most SATA arrays

How much capacity growth?

Can you maintain existing management framework?


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Decide if you need a Stand-Alone array or disk-space in

a unified platform.

Multi-disk Systems

Mix FC and SATA trays in the same array

Example vendors: EMC, HDS, 3Par, BlueArc, Pillar

Stand-alone SATA arrays

Plethora of players from entry-level to enterprise

Example vendors: NetApp, IBM, NexSan, Candera

Of course, Pros and Cons To Both Approaches!

Key Points For Tier 2 Evals:Business Operations Storage


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Key Points for Tier 3 Evals:Protection and ArchivalWhat asset you archive or protect drives your choices:

Standard SATA array

Online copies of data

CAS Software or Appliance

Online archiving of reference information

Virtual Tape Software or Appliance

Fast disk-based data protection

Traditional BU/R Software to Disk

Fast disk-based data protection


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5 Planning Steps for Tiered Storage1. Define your business drivers: Why do

this?



4. Go out and whip your vendors5. Deploy your plan


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Choosing The Right SolutionsSage End User Comments

Look wider than you usually do.

Resist temptation to roll with your existing trusted vendor

Tiered Storage Has Many Purchasing Impacts

Tier One = Potential footprint impact from offloading

Tier Two = unique requirements for primary

Tier Three = backup or archiving requirements driven by

higher tiers

If you go best of breed, ensure management

commonalities across tiers

You can create more problems than you solve.


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2 Key Questions For All Vendors

How will I move and place my data?

Volume-level copy/snapshots

File-level copy

Application-integrated/controlled

Can I use my existing management tools?

Discovery, partitioning, provisioning

Capacity management, device-level management

Drill the emerging vendors on these points


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Who Are Some Worthy Players?

In Tier 2 Business Operations

EMC, NetApp, HDS, IBM, STK

NetApp, BlueArc, 3Par

Candera, NexSan

In Tier 3 Protection and Archiving STK, ADIC, Quantum

Diligent

EMC Centera, Permabit, DCT, Archivas


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Deployment Example

Company #1: Financial Services, East Coast

220 TB primary storage on Tier One

Wants to reduce Tier 1 footprint growth by 50%

Deploys combination of two SATA vendors for Tier

Two assets. Uses existing SM tools for migration.

Has a disk-backup appliance at Tier Three, exploring

CAS for compliance archiving.

Maintains tape libraries, exploring CAS for long-term

disk.


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Deployment ExampleCompany #2: Online/Store Retailer, California

10 TB primary storage on SAN. 5 TB on Tier One

storage.

Happily w/ deployed disk backup for Tier 3.

In 2005, will deploy Tier 2 on SATA.

Goal is to reduce total amount of storage in Tier 1

by 3 TB via migrating less critical SQL Server andMS Exchange to SATA

Will use existing volume management software


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Conclusions on Tiered Storage Plan before you leap. Think deeply in

terms of asset groups and storage traits.

Move in steps. Resolve for key businessdrivers first. You have plenty of time.

Look at all the vendors. Choices abound!

Preserve your existing managementinvestments


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Conclusions on Tiered Storage

Call us if you need help or input!

Taneja Group works with dozens of end

users on RFPs and general questions

[email protected]

[email protected]

925.417.0329
mailto:[email protected]:[email protected]:[email protected]:[email protected]


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Questions!

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