Product Brief
K E Y F E AT U R E S
Up to 150,000 IO reads per second for
small, random block-size IO activity
n
Up to two times faster than solutions
not using MegaRAID FastPath software
n
LSI SSD Guard™ preventative failure
protection for SSDs
n
Software License
Ordering PN
LSI00266
Physical Key
Ordering PN
LSI00247
Supported RAID
Controllers
MegaRAID SAS 9260-4i
MegaRAID SAS 9260-8i
MegaRAID SAS 9261-8i*
MegaRAID SAS 9260-16i
MegaRAID SAS 9280-4i4e
MegaRAID SAS 9280-8e*
LSI™ MegaRAID® FastPath™ Software
An IO Accelerator for Solid State Drive Arrays
LSI MegaRAID FastPath software is a high-performance IO accelerator for
Solid State Drive (SSD) arrays connected to a MegaRAID controller card. This
advanced software is an optimized version of LSI MegaRAID technology
that can dramatically boost storage subsystem and overall application performance — particularly those that demonstrate high random read/write
operation workloads — when deployed with a 6Gb/s MegaRAID SATA+SAS
controller connected to SSDs.
Why SSDs?
There is so much buzz about SSDs because of the read performance and
power advantages that they provide. Individual SSDs can reach up to
45,000 or more read IOPs compared to the fastest enterprise hard disk
drives that can only reach up to a few hundred IOPs. Also, power consumption per IOP in SSDs is a fraction of that required for hard disk drives.
MegaRAID SAS 9280-16i4e
MegaRAID SAS 9280-24i4e
Supported
Operating
Systems
All supported operating
systems
Supported SSDs
No restrictions.
Please visit www.lsi.com/
channel/support/marketing_resources for a complete list of tested SSDs.
* These controllers will accept only a software license and
are not compatible with the physical hardware key
MegaRAID FastPath Software Applications and Performance
Application workloads that will benefit most from MegaRAID FastPath
software with SSD volumes are those with small and random IO patterns
requiring high transactional throughput, such as OLTP.
RAID 0 Random Workload Performance
With MegaRAID FastPath software enabled, SSD configurations tuned for small, random block-size IO activity — typical of transactional database applications — can sustain over 150,000 IO reads per second in RAID 0 configurations. This is two times the transactional performance of
identical configurations when the MegaRAID FastPath software is disabled. This is particularly evident in 4K random reads and random writes; as
well as 4K and 8K OLTP transaction-oriented benchmarks.
160000
153,000
140000
FastPath
Non-FastPath
147,582
141,167
120,160
120000
RAID Adapter
n MegaRAID SAS 9260-8i
100000
IOPs
88,800
86,800
84,200
80000
82,180
60000
SSDs
n Eight Intel X25E SSD Drives
Benchmark Configuration
n RAID 0/64KB Stripe Size/Write Through/Direct IO/No Read Ahead/
Disk Cache Enabled
40000
Benchmark Profile(s)
n 4KB Random Reads/Writes
n 4KB and 8KB OLTP
20000
0
Test Specifications
Release Package
n FastPath — MegaRAID Release 4.3 with MegaRAID FastPath Software
Enabled
n Non-FastPath — MegaRAID Release 4.3
4KB Random Reads
4KB Random Writes
4KB OLTP
8KB OLTP
Figure 1: RAID 0 Random Workload Performance
In Figure 1, note that in the standard mode where MegaRAID FastPath software is not enabled, arrays are able to reach more than 80,000 IOPs.
This is due to additional performance tuning optimizations over previous 6Gb/s MegaRAID SATA+SAS generations. However, with the MegaRAID
FastPath software enabled, users can experience more than 70% increase in IOPs throughput.
RAID 5 Random Workload Performance
In Figure 2, read performance in RAID 5 configurations demonstrate similar IOPs performance as RAID 0. When comparing RAID 5 write performance, MegaRAID FastPath software demonstrates 2.5 times the IOPs performance over an identical configuration with this feature disabled
shown in Figure 3.
160000
25000
FastPath
Non-FastPath
140000
20000
120000
100000
15000
IOPs
IOPs
FastPath
Non-FastPath
80000
10000
60000
40000
5000
20000
0
4KB Random Reads
8KB Random Reads
Figure 2: Read Performance in RAID 5 Configurations
Test Specifications
Release Package
n FastPath — MegaRAID Release 4.3 with MegaRAID FastPath Software
Enabled
n Non-FastPath — MegaRAID Release 4.3
RAID Adapter
n MegaRAID SAS 9260-8i
0
4KB Random Writes
Figure 3: Write Performance in RAID 5 Configurations
Benchmark Configuration
n RAID 5/64KB Stripe Size/Write Through/Direct IO/No Read Ahead/
Disk Cache Enabled
Benchmark Profile(s)
n 4KB Random Reads/Writes
n 8KB Random Reads/Writes
SSDs
n Eight Intel X25E SSD Drives
LSI™ MegaRAID® FastPath™ Software 2
RAID 0 Real World Performance
MegaRAID FastPath software significantly boosts server application performance levels for real-world workloads as well. MegaRAID controllers
with MegaRAID FastPath software disabled are limited to 80,000 IOPs, while application performance improves by up to 45% with MegaRAID
FastPath software enabled shown in Figure 4.
140000
FastPath
Non-FastPath
120000
100000
116,632
101,095
IOPs
87,820
80000
115,925
80,630
77,360
80,088
68,950
Test Specifications
Release Package
n FastPath — MegaRAID Release 4.3 with MegaRAID FastPath Software
Enabled
n Non-FastPath — MegaRAID Release 4.3
RAID Adapter
n MegaRAID SAS 9260-8i
60000
SSDs
n Eight Intel X25E SSD Drives
40000
Benchmark Configuration
n RAID 0/64KB Stripe Size/Write Through/Direct IO/No Read Ahead/
Disk Cache Enabled
20000
0
Benchmark Profile(s)
n File Server, Web Server, E-Mail Server, OS Activity
File Server
Web Server
Email Server
OS Activity
Figure 4: FastPath vs. Non-FastPath Real Work Performance
LSI SSD Guard™ Technology
SSDs are known for their reliability and performance. The LSI SSD Guard technology, that is unique to MegaRAID controllers, increases the reliability of SSDs by automatically copying data from a drive with potential to fail to a designated hot spare or newly inserted drive. A predictive failure event notification, or S.M.A.R.T command, automatically initiates this rebuild to preserve the data on an SSD whose health or performance
falls below par. If a hot spare is not present or not assigned, MegaRAID Storage Manager (MSM) will recommend that the user insert a hot spare
drive into an available slot.
Because SSDs are very reliable, non-redundant RAID 0 configurations are much more common than in the past. SSD Guard technology offers
added data protection for RAID 0 configurations by actively monitoring the status of the SSDs. SSD Guard, together with MegaRAID FastPath
software, allows users to take full advantage of the reliability and performance attributes of SSDs.
For more information and sales office locations, please visit the LSI web sites at: lsi.com lsi.com/channel
LSI, LSI and Design logo, CacheCade, FastPath, MegaRAID, MegaRAID Storage Manager, and SSD Guard are trademarks or registered trademarks of LSI Corporation. All other brand and product names may be trademarks of their respective companies.
LSI Corporation reserves the right to make changes to any products and services herein at any time without notice. LSI does not assume
any responsibility or liability arising out of the application or use of any product or service described herein, except as expressly agreed to
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Copyright ©2010 by LSI Corporation. All rights reserved.
April 2010