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Tier X - Stretching Tiered Storage from SSD to Cloud
Storage ExpoLondon
Kirby WadsworthVice President – Global Marketing
2
Outline
• Tiered storage basics• Introduction to file virtualization• Storage technologies continue to evolve• Optimizing for lower cost• Optimizing for application performance• Reduce costs and increase flexibility with cloud• Bringing it all together• Summary
3
Tiered Storage Basics
4
What Is Tiered Storage?
• Not all data is created equal• Dynamically match type of data with a storage system
optimized for that data type• A simple way to start:
– Segregate data into active and inactive data sets• Active data placed on high-performance storage• Inactive data placed on low-cost storage
• Dramatic cost benefits
5
History of Tiered Storage
• Historical impediments– For many years, the opportunity to tier was limited by
the absence of a good choice for the second tier• Tape too slow and fragile for general purpose Tier 2
– Adding a tier of storage was not transparent to user and application access to data• Moving data is disruptive
• What changed?– Introduction of high-capacity SATA
• Acceptably slower when used to store less active data
– File virtualization
6
Introduction to File Virtualization
7
What Is File Virtualization?
• Logical abstraction of file systems• Decouples access to files from physical location of files
Servers
Applications and Users
File Virtualization with
Integrated Services
Logical Access
Physical Access
Servers
Applications and Users
“Decoupling”
Before After
8
User View
“Virtual name” is independent of where the file is actually stored
Virtual Namespace
File Virtualization
u:\Presentations\BoD.ppt
9
Storage View
File Virtualization
“Tier-1” “Tier-2”
Physical Namespace
“Tier-3”
10
Transparent Mobility
“Virtual name” is independent of where the file is actually stored
Virtual Namespace
File Virtualization
u:\Presentations\BoD.ppt
“Tier-1” “Tier-2”
Physical Namespace
“Tier-3”
11
Storage Technologies Continue to Evolve
12
Traditional Storage Technologies
Lower Performance
Higher Cost/GB
Higher Performance
Lower Cost/GB
TraditionalTier-1
(High-perf SAS)
TraditionalTier-2
(High-cap SATA)
13
Emerging Storage Technologies
Lower Performance
Higher Cost/GB
Higher Performance
Lower Cost/GB
TraditionalTier-1
(High-perf SAS)
TraditionalTier-2
(High-cap SATA)
Optimized Storage
(Dedupe SATA)
MemoryStorage
(SSD)
Lowest $ per IO/sec
Lowest $ per GB
“Elastic” Storage(Cloud)
14
Integrate Heterogeneous Storage Technologies
File Virtualization
Applications and Users
Real-time matching of application/business needs and storage capability
Memory Storage
(SSD)
Traditional Tier 1
(High-perf SAS)
Traditional Tier 2
(High-cap SATA)
Optimized Storage
(Dedupe SATA)
“Elastic”Storage
(Cloud)
15
Starting to Tier:Optimize for Lower Costs
16
IDC: Worldwide Network Controller and Block-Level Storage Virtualization 2008–2012 Forecast: A Key Component in Building the Virtual Datacenter, April 2008
Total Enterprise Disk Storage Systems Shipped
IT is seeking cost and efficiency improvementsIT is seeking cost and efficiency improvements
Why Companies Started to Tier Storage
IT Budget Constraints Volume of Data Growing
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Simple Model for Active Data Management
Virtual Namespace
u:\Presentations\BoD.ppt
Physical Namespace
File Virtualization
Not modified in last month
Modified inlast month
Backup
Same Weekly Fulls (x5)But only 10% of the data
No Weekly Fulls (only Monthly+)
10% 90%
Tier 1 Tier 2
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Case Study – Medium Enterprise
• Challenge – rapid data growth:– High costs for disk capacity– Long backup times and high costs for backup media
• Solution– Moved data not modified in last month (90%) to Tier 2– Different backup policies for Tier 1 and Tier 2
• Benefits– Disk cost savings
• New disk capacity is all Tier 2 (at 1/5 the cost…)
– Backup cost savings• Weekly full backups consume 10% tape media• Weekly full backup times dropped from >36 hours to <3 hours
19
Sample Cost Savings – 25TB Environment
• Hard cost savings– Use of lower-cost disk storage $270,000– Reduction in backup costs $50,000– Increased capacity utilization (40->80%) $536,000– Power savings $34,000 – Total $890,000
• Soft cost savings– Transparent cross-vendor/technology capacity expansion– Transparent cross-vendor/technology migration– Reduction in backup/restore times– Reduced backup failures
20
$0.00
$5.00
$10.00
$15.00
$20.00
$25.00
$30.00
$35.00
$40.00
$45.00
Tier‐1 Tier‐1+2 Delta
$15.21
$4.26
$10.95
$22.81
$1.06
$21.75
$2.50
$0.50
$2.00
$1.53
$0.16
$1.36
Power
Backup
Util
Disk
Cost Comparison – $/GBTier-1
$42/GB
Tier-1+2$6/GB
Delta$36/GB
21
Optimize for Application Performance
22
Performance Comparison
Type of Storage
AggregateBandwidth
Single OperationLatency
Memory Storage (SSD)
> 1000 MB/sec < 500 usec
Traditional Tier 1(SAS)
500 MB/sec 0.5 to 5 msec
Traditional Tier 2(SATA)
100 MB/sec 0.5 to 15 msec
“Elastic” Storage(Cloud)
0.1-10 MB/sec 100 msec to >10 sec
Notes:These are general guidelines but your mileage may vary…
23
Case Study – Technology Company
• Challenge– Migrated software developers from physical to virtual
servers– User response time became unacceptable when multiple
software builds were running parallel against the shared VM storage
• Solution– Moved data from disk to “low-end” SSD
• Benefits– Worst-case response times dropped 50x – Increased developer productivity
24
Performance Benefits
0
100
200
300
400
500
600
700
10:3
2:50
10:4
0:55
10:4
9:09
10:5
7:17
11:0
5:26
11:1
3:31
11:2
1:34
11:2
9:38
11:3
7:44
11:4
5:55
11:5
4:04
12:0
2:10
12:1
0:15
12:1
8:19
12:2
6:25
12:3
4:29
12:4
2:36
12:5
0:44
12:5
8:51
13:0
6:57
13:1
5:01
13:2
3:03
13:3
1:06
13:3
9:08
13:4
7:11
13:5
5:16
14:0
3:27
14:1
1:30
14:1
9:36
14:2
7:42
14:3
5:53
14:4
3:59
14:5
2:04
15:0
0:15
15:0
8:31
15:1
6:36
15:2
4:40
15:3
2:47
15:4
1:04
15:4
9:10
15:5
7:16
16:0
5:24
16:1
3:27
Storage Response Time (msec) from Production Development Environment
500 msec
BeforeSSD
BeforeSSD
AfterSSDAfterSSD
25
Reduce Cost and Increase Flexibility with Cloud
26
How Does Cloud Storage Compare?
Characteristic Local Typical CloudPath to storage
LAN 10 – 1000 MB/sec
WAN0.1 to 10 MB/sec
Typical Performance High Low
“Native”Interface
File system(read/write anything)
Object store(put/get only “entire files”)
“Capacity”Economics
Complexpurchase and maintain storage cost calculation
Simplerental model
($/GB-month)
“Access”Economics
Simple“bandwidth is free” model
Complex“access pattern” based cost
calculation
27
Cloud Economics Can Make Sense Today
Tier-1
Tier-1+2Tier-2
Tier-1+CloudCloud
$42/GB-36mTier-1@40%
$6.0/GB-36mTier-1+2 @80%
$8.7/GB-36mTier-1+Cloud@100%
10% access
$/G
B (3
-yea
r)
Storage Utilization
28
Leverage Cloud for Increased Flexibility
Virtual Namespace
File Virtualization
u:\Presentations\BoD.ppt
Physical Namespace
“Tier-1”Traditional
NAS
“Tier-2”Dedupe
NAS
“Tier-3”CloudNAS
Last modified >30 days
Last Modified <30 days
Maintain Tier-2freespace goal
Recall if accessfrequency exceeds defined threshold
29
Case Study – Health Care Provider
• Existing file virtualization customer– Large NAS environment with two tiers today
• Tier 1 is traditional high-performance NAS• Tier 2 is deduped NAS
• Starting a pilot with cloud as Tier 3– Use cloud as “spillover” capacity– Accesses cloud though a file system gateway
• Benefits– Maximizes utilization of Tier 1 and Tier 2 (= lowest cost…)– Supports dynamic capacity increases and decreases
• No hardware provisioning needed
30
Bringing It All Together
31
Storage Tiering Extracts Synergies
Tier-1* Tier-2OptimizedTier-1 + Tier-2
Cloud
OptimizedTier-1 + Tier-2 + Cloud
Capacity ($/GB) 3 1 1 1-2 1
Access ($/GB) 1* 2 1 3 1
AccessPerformance 1* 2 1 3 1
BackupOptimization 3 3 1 1 1
Utilization 3 3 1-2 1 1
Dynamic Capacity Adds 3 3 1-2 1 1
Key: 1 is best; 3 is worst* For simplicity assume that Tier-1 includes the ability to use SSD technology
32
Summary
33
Summary
• Storage tiering optimizes storage resources for performance and cost based on business value– There are many storage choices available– File virtualization enables you to easily utilize
heterogeneous storage resources or technologies• How do you start?
– Deploy Tier 2 today to reduce costs and improve backup– Consider deploying SSD to address application
performance challenges– Start planning for cloud
• Deploy today for increased flexibility in managing storage• Ramp up deployment as prices continue to decrease
35
F5 ARX® Product Family• Scalable product family
– ARX500: Departmental Device– ARX1000: Mid Tier Device– ARX4000: Mid to Large Enterprise
Device– ARX6000: Data Center Device
• Common Data Management Operating System software
• Enterprise-class management and serviceability – CLI, GUI, SNMP– Logging, reporting, scripting– Diagnostics, “e-mail home”