flash for all

30 Pages·2013·12.31 MB·English

Software is the Key to the All-Flash Data Center

F L A S H F O R A L L
Scott Dietzen, Ph.D.
CEO, Pure Storage
© 2013 Pure Storage, Inc. | 1
Journey to the All-Flash Data Center
•  Flash memory now dominates the consumer
technology experience:
•  Why flash over disk?
>10x faster 10x smaller
10x lower power 10x more reliable

•  But relatively little impact yet on enterprises
and XaaS. Why?
Too expensive
Doesn’t work with existing architectures
Reliability concerns
© 2013 Pure Storage, Inc. | 2
Eye on the Prize:
Flash Disrupting the Enterprise Storage Market

Disk Storage Market
Tier 1 Priorities

Tier 1
~16 ExB 1.  Resiliency
Perf.
/ Year
Storage 2.  Performance
Arrays

3.  Usability

4.  Supportability
~$60B TAM

($15B annually)
5.  Cost

Tier 2
~86 ExB
Capacity Storage

/ Year

~$60B TAM ($15B annually)
© 2013 Pure Storage, Inc. | 3
The Recipe for Flash Disrupting
Enterprise Storage
☐ D i s r u p t i v e P e r f o r m a n c e
☐ C o s t P a r i t y t o D i s k o r B e t t e r
☐ R e s i l i e n c y
☐ U s a b i l i t y
☐ S u p p o r t a b i l i t y
© 2013 Pure Storage, Inc. | 4
The Recipe for Flash Disrupting
Enterprise Storage
w a r e

H a r d
☐ D i s r u p t i v e P e r f o r m a n c e
☐ C o s t P a r i t y t o D i s k o r B e t t e r
☐ R e s i l i e n c y
☐ U s a b i l i t y w a r e

S o f t
☐ S u p p o r t a b i l i t y
© 2013 Pure Storage, Inc. | 5
Need for All-Flash:
Hybrids Don’t Disrupt Performance
At 95% cache hit rate, hybrids run at about ½ the
• 
speed of all-flash on I/O bound workloads
•  When you expect disk and hit flash, all is well
•  But once you expect flash performance …
•  For random I/O latency
Flash is air travel, while
• 
Hard drive is sea travel
• 
© 2013 Pure Storage, Inc. | 6
Variable Block Size Wins For Real World Workloads

Don’t Believe the 4K Benchmark Hype!
4K Real-World
Benchmark I/O Size
500,000
450,000
400,000 32K I/O = 8 * 4K I/Os

350,000
64K I/O = 16 * 4K I/Os
300,000
IOPS
250,000
200,000
150,000
100,000
50,000 4K-Optimized

Flash Products
0
4K 8K 16K 32K 64K
I/O Size
© 2013 Pure Storage, Inc. | 7
The Recipe for Flash Disrupting
Enterprise Storage
☐☐✔ D

Ciossr tu pPtairviet y P teor fDoirsmka onrc eB e t t e r
☐ R e s i l i e n c y
☐ U s a b i l i t y
☐ S u p p o r t a b i l i t y
© 2013 Pure Storage, Inc. | 8
Data Reduction: Essential for Affordable Flash…
…and essential for write avoidance

© 2013 Pure Storage, Inc. | 9
The Six “Musts” of Data Reduction

1
Inline & always on (to avoid writes)

2
Global (across entire array)

3
No performance penalty

4
Deduplication AND compression (DB & VM/VDI)

5
Small chunk size (effectiveness + alignment)

6
No trusting hashes (collision = corruption)
© 2013 Pure Storage, Inc. | 10