Compaq ProLiant 4500 I/O Performance Tuning of Compaq Servers - Page 28
K RPM Drives
View all Compaq ProLiant 4500 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 28 highlights
I/O Performance Tuning of Compaq Servers 28 IO/sec vs. Number of Fibre Channel Arrays 4500 4000 3500 3000 2500 2000 1500 1000 500 0 0 1 2 3 4 5 6 7 8 9 10 11 Number of Fibre Channel Arrays 2 KB OLTP WS Mix Web Server Decision Support Figure 16. Relative sustained I/O for each number of FC arrays under different applications. These results were obtained using Iometer version 1998.10.08, Copyright 1998 by Intel Corporation. Intel does not endorse any Iometer results. Drive Technology 10K RPM Drives 10K RPM drives represent a significant improvement in SCSI drive throughput and latency. The following set of graphs illustrate the performance gains afforded by using 10K RPM drives. 10K vs. 7200 RPM drives As the graph illustrates, 10k drives can deliver as much as a 46% improvement in per second I/O over 7200 RPM drives. While the improvements would affect any application, the graph shows a greater improvement for small block transfers. For large block transfers, the performance gains of the 10K drives are masked by SCSI bus saturation. ECG044.0399