Dell PowerConnect W-Airwave Manual
W-airwave 7.2 server sizing guide
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- User manual (334 pages) ,
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Summary of Contents for Dell PowerConnect W-Airwave
- Page 1 Dell PowerConnect W AirWave 7.2 Sizing Guide...
- Page 2 , Green ® Island . All rights reserved. All other trademarks are the property of their respective owners. Dell™, the Dell™ logo, and PowerConnect™ are trademarks of Dell Inc. Open Source Code Certain Dell PowerConnect W products include Open Source software code developed by third parties, including software code subject to the GNU General Public License (GPL), GNU Lesser General Public License (LGPL), or other Open Source Licenses.
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Page 3: Table Of Contents
2,500 - 5,000 Devices SSD Drives..................8 Disk Partitioning.......................... 9 Storage System Tuning ......................9 Chapter 3 Virtualization and Scalability ...................11 Virtualization............................11 Scalability Assumptions ........................12 Appendix A Miscellaneous Sizing Information ..................15 AMD Hardware..........................15 Dell PowerConnect W AirWave 7.2 | VisualRF User Guide... - Page 4 Dell PowerConnect W AirWave 7.2 | VisualRF User Guide...
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Page 5: About This Guide
About this Guide This preface provides an overview of this guide and contact information for Dell, and includes the following sections: “Document Organization” on page 3 “Note, Caution, and Warning Icons” on page 3 “Contacting Support” on page 4 Document Organization This document provides guidelines for purchasing new hardware which hosts the Dell PowerConnect W AirWave Wireless Management System (AWMS). -
Page 6: Contacting Support
Contacting Support Table 2 Website contact Web Site Main Website dell.com Support Website support.dell.com Documentation Website support.dell.com/manuals 4 | About this Guide Dell PowerConnect W AirWave 7.2 | Sizing Guide... -
Page 7: Chapter 1 Sizing Overview
Xeon X5560 2,500 Quad Core Intel® 16 GB 4 GB 4 GB Xeon X5560 2,500 + Hex Core Intel® 3.33 24 GB 6 GB 6 GB Xeon X5680 Dell PowerConnect W AirWave 7.2 | VisualRF User Guide Sizing Overview | 5... -
Page 8: Storage Matrix
75 GB capacity. NOTE: Please ensure the disk subsystem can sustain these random write rates. Sustained sequential write rates will not help because AWMS writes are primarily random. 6 | Sizing Overview Dell PowerConnect W AirWave 7.2 | VisualRF User Guide... -
Page 9: Chapter 2 Cpu, Bios, Operating Systems, And Storage
AWMS supports both 32-bit and 64-bit hardware platforms. An AWMS server servicing more than 2,500 devices requires 64-bit OS installation coupled with AWMS 7.1 or higher. AWMS 7.1 installs 64-bit CentOS by default. Dell PowerConnect W AirWave 7.2 | Sizing Guide CPU, BIOS, Operating Systems, and Storage | 7... -
Page 10: Storage
AWMS servers servicing more than 2,500 devices require 64-bit OS and AWMS 7.1 or higher. Do not use software RAID systems or SATA disk drives. 8 | CPU, BIOS, Operating Systems, and Storage Dell PowerConnect W AirWave 7.2 | Sizing Guide... -
Page 11: Disk Partitioning
Deadline elevator - uses a deadline algorithm to minimize I/O latency NOOP scheduler -a simple FIFO Anticipatory elevator - introduces a small delay before dispatching the I/O Dell PowerConnect W AirWave 7.2 | Sizing Guide CPU, BIOS, Operating Systems, and Storage | 9... - Page 12 While CFQ works well in most installations, Dell has found changing scheduler to NOOP and allowing the hardware RAID controller to handle I/O queuing has produce significant I/O improvements. This is set via /sys/ block/<device>/queue/scheduler. NOTE: Contact support.dell.com prior to changing this setting.
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Page 13: Chapter 3 Virtualization And Scalability
NOTE: There are always spikes that go beyond the Sustained IOPS numbers stated above. A 20% increase buffer is recommended for virtualized environments. Ensure you allocate enough extra disk space for the OS and swap when partitioning the virtual disk. Dell PowerConnect W AirWave 7.2 | Sizing Guide Virtualization and Scalability | 11... -
Page 14: Scalability Assumptions
Number of access points per floor plan Number of clients per floor plan Number of attenuation grid cells per floor plan 2,500 Number Rogue devices per floor plan AMP Synchronization timer (minutes) 12 | Virtualization and Scalability Dell PowerConnect W AirWave 7.2 | Sizing Guide... - Page 15 Table 10 VisualRF Scalability Test Values (Continued) Category Value Rogue location timer (minutes) Location calculation timer (min/max/number of samples) 90/360/3 Dell PowerConnect W AirWave 7.2 | Sizing Guide Virtualization and Scalability | 13...
- Page 16 14 | Virtualization and Scalability Dell PowerConnect W AirWave 7.2 | Sizing Guide...
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Page 17: Appendix A Miscellaneous Sizing Information
12 GB 6 GB 6 GB NOTE: Dell does not actively conduct scalability testing for the AMD processor product line. These numbers are based on published performance data. Dell PowerConnect W AirWave 7.2 | Sizing Guide Miscellaneous Sizing Information | 15... - Page 18 16 | Miscellaneous Sizing Information Dell PowerConnect W AirWave 7.2 | Sizing Guide...