To Improve Your Storage Operation Performance

To Improve Your Storage Operation Performance

SSD+OPtimzerRoy Kung

Apacer Technology Inc. [email protected]

30 September 2008

This document and its contents are confidential © Copyright Apacer Technology Inc. 2

Contents

• The Problem w/ Disk Operation• Technology Introduction• A New Solution of Solid State Disk • DEMO• Summary


Accumulation of free space fragmentation through normal system use.

Solid State Drives (SSD) have several issues that come into play when used as the primary storage medium in place of traditional magnetic Hard Disk Drives (HDD); specifically regarding the operating system’s logical file system. To date, file systems have been designed under the pretext of HDDs, and do not properly account for new NAND Flash / SSD technology.

The Problem of Fragmentation

w/ Solid State Disk


Write I/O throughput degradation due to fragmented free space.

Write performance decreases proportionately as free space fragmentation increases. The resultant 80% write speed reduction on a variety of drives due to this effect.

The Impact of Fragmentation

w/ Solid State Disk


� Installing Windows XP professional resulted in the fragmentation of 439 files , including important files from system directory and the DLL cache.

�Installing Windows Office resulted in the fragmentation of 34 files , across both application and supporting files.

�Installing Windows XP SP2 resulted in 197 fragmented files, mostly across log and temporary files.

Source: White Paper: Impact of Disk Fragmentation.

The Accumulation of Fragmentation


Disk Fragmentation


2 4 5 6 7 83 91

File Wrote

Fragmentize

Windows MFT

Allocated SpaceFragment Free SpaceNon- Fragment Free Space

Random Write Sequential Write

� The performance may slowdown to 1/9 of the existing machines. There is 9 system disk I/O called to write this file into SSD Disk,As we know, the disk I/O obviously is a lower performance in a computer system

� Eight Random Write and one sequential WriteThis will degrade write performance as much as 80% to SSD devices, Especially w/ MLC NAND Flash.

� The performance may slowdown to 1/9 of the existing machines. There is 9 system disk I/O called to write this file into SSD Disk,As we know, the disk I/O obviously is a lower performance in a computer system

� Eight Random Write and one sequential WriteThis will degrade write performance as much as 80% to SSD devices, Especially w/ MLC NAND Flash.

The Impact of Fragmentation


Fragmentation increases time to access files for all common system activities

8

Source: White Paper: Impact of Disk Fragmentation.


Why Auto Defragmentation

• Defrag disks “on the fly”, in real time• No more hours of time-out• Only idle system resources are utilized• Keep system performance at optimal• Combined benefits of hardware & software


Why Scheduled Defrag

Not Enough?

• Typically run during off-hours for hours• Off-hours no longer a reality for business today due to

globalization• Fragmentation builds up at unheard-of rates due to large

file sizes and disk capacities• Performance drops in between runs• People forget, You are busy…


The new solution for SSD volumesis announced Today

Apacer has partnered with Diskeeper Corporation HyperFastTM

Technology to provide a competitive solution of Solid State Disk –SSD+Optimzer ™ for the SSD volumes running under Microsoft Windows

Operating Systems.


� Apacer provide competitive solution will improve the speed and performance ofexisting machines, increase the productivity of users, improve reliability, and increase device longevity.

� Wear Leveling Technology� S.M.A.R.T. Technology � E.C.C. Technology� Security Technology� Power Failure Management Technology� Diskeeper HyperFast Technology

Why SSD+OptimizerTM


� Faster Performance

� Automatic maintenance through specific optimization techniques which preemptively force the file system to write sequentially rather than randomly.

HDBENCH Scores Apacer 8GB SATA SSD(higher scores are better)

17227

3691

17246

1742

102389

7185467077

15753

0

20000

40000

60000

80000

100000

120000

Read Write Random Read Random Write

Before With HyperFast

HDBENCH Scores Apacer 8GB SATA SSD(higher scores are better)

17227

3691

17246

1742

102389

7185467077

15753

0

20000

40000

60000

80000

100000

120000

Read Write Random Read Random Write

Before With HyperFast

Key Benefit (I)


SSDLife™ Erase Count RAW Average

3029

25

1414

10

00

5

10

15

20

25

30

35

Stage

1. F

orm

at S

SD

Stage

2. F

ragm

ent F

ree

Space

Stage

3. H

DBENCHSta

ge 4

. For

mat

SSD

Stage

5. F

ragm

ent F

ree

Space

Stage

6. H

yper

Fast

Stage

7. H

DBENCH

Cum

ulat

ive

Era

se C

ount

� Longer Life

� The intelligent algorithms employed by DiskeeperTM HyperFastTMaredesigned to optimize the drive’s performance and maximize its useful life. Using SSD+Optimizer TM will cause typical-use to generate less erase-write activity, thereby increasing device longevity

Key Benefit (II)


Demo


� With typical system use, the out of the box performance of computer systemsshipping with solid state storage devices will not be maintained. This is not due to quality or design of the hardware, but rather the fact that inherent attributes of file systems will manifest over time.

� Fragmentation, in this case primarily of free space, is a natural side effect that will occur and accumulate over time with all file systems. As free space becomes increasingly fragmented, performance will suffer proportionately. This leads to increased, excess write activity on the NAND Flash device, diminishing the device’s longevity and reducing its performance dramatically, especially with write speed.

� Apacer NAND Flash devices with HyperFast technology will out perform competitive solutions.As a result of this revolutionary technology alliance, users of ApacerSSD+Optimizer TM solutions will enjoy greater performance which will be maintained for the full, extended life of the storage device.

Summary

Thank You!

To Improve Your Storage Operation Performance

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