Tiered Storage Presentation -Storage Decisions
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Transcript of 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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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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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
Applications Web Database Backups
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
Applications Web Database Backups
Groups/Tiers
Biz Critical Biz Ops Protect/Archival Long-Term
1
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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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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?
2. Define storage asset classes and traits
3. Evaluate architectural choices
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
925.417.0329
mailto:[email protected]:[email protected]:[email protected]:[email protected] -
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Questions!