1. Comparing response time performance betweenViolin Memory Arrays and SSD-based arrays

2. Spike Free Low Latency Violin uses several techniques to deliver consistent low latency performance Unique flash vRAID technology (4 bits + 1 parity) Striping across multiple flash modules for parallel access Intelligent scheduling: Reads/Writes are never blocked by Erases 2 ©2011 Violin Memory, Inc.

3. Spike Free Low Latency Goals Low Latency Minimize number of spikes Minimize magnitude of spikes Some graphs comparing Violin to SSD arrays at 10% load… 3 ©2011 Violin Memory, Inc.

4. Spike Free Low Latency 4 ©2011 Violin Memory, Inc. 10% Load Violin Latency Fastest performance Least variability No spikes

5. Spike Free Low Latency Under heavier load (50%, 90%) thedifference is more dramatic… 5 ©2011 Violin Memory, Inc.

6. Spike Free Low Latency 6 ©2011 Violin Memory, Inc. 50% Load Violin Performance consistent SSD Performance Degrades Higher latency More variability Many spikes

7. Spike Free Low Latency 7 ©2011 Violin Memory, Inc. 90% Load Violin Performance consistent SSD Performance Degrades Much higher latency High variability Many spikes

8. Spike Free Low Latency Thank You www.vmem.com 8 ©2011 Violin Memory, Inc.