To Improve Your Storage Operation Performance
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Transcript of To Improve Your Storage Operation Performance
To Improve Your Storage Operation Performance
SSD+OPtimzerRoy Kung
Apacer Technology Inc. [email protected]
30 September 2008
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Contents
• The Problem w/ Disk Operation• Technology Introduction• A New Solution of Solid State Disk • DEMO• Summary
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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
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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
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� 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
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Disk Fragmentation
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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
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Fragmentation increases time to access files for all common system activities
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Source: White Paper: Impact of Disk Fragmentation.
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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
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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…
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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.
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� 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
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� 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)
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SSDLife™ Erase Count RAW Average
3029
25
1414
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25
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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)
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Demo
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� 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!
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