Dell EqualLogic FS7500 Technical Manual
Equallogic best practices series network attached storage
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Summary of Contents for Dell EqualLogic FS7500
- Page 1 Dell EqualLogic Best Practices Series Integrating the Dell EqualLogic FS7500 into an Existing SAN A Dell Technical Whitepaper Storage Infrastructure and Solutions Engineering Dell Product Group February 2012...
- Page 2 ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND. © 2011 Dell Inc. All rights reserved. Reproduction of this material in any manner whatsoever without the express written permission of Dell Inc. is strictly forbidden. For more information, contact Dell.
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Page 3: Table Of Contents
Network ports ............................11 IP addresses ............................... 11 Pool configuration ...........................12 Volume configuration ..........................13 Monitoring an existing SAN ........................13 Summary ................................15 Appendix A Vdbench scripts ........................... 16 Related publications ..............................17 BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... - Page 4 2011 and August 2011 at the Dell Labs facility in Round Rock, Texas. The team that created this whitepaper: Michael Kosacek, Arun Rajan, and Margaret Boeneke We would like to thank the following Dell team members for providing significant support during development and review: Tony Ansley, Richard Golasky, and Chris Almond...
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Page 5: Introduction
Dell EqualLogic FS7500 into an existing EqualLogic PS Series iSCSI SAN. Readers should be familiar with general concepts of the Dell EqualLogic PS Series iSCSI storage as well as Ethernet Local Area Network (LAN) and basic NAS concepts. -
Page 6: Terminology
Unstructured Data Describes data that does not have a predefined structure such as user files on a share. Note: For additional details and definitions see the following document: Dell EqualLogic Configuration Guide , available at: http://www.equallogic.com/resourcecenter/assetview.aspx?id=9831 BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... -
Page 7: Dell Equallogic Fs7500
The FS7500 is a dual active/active architecture that consists of a redundant pair of appliance-like controller nodes with a backup power supply. The large onboard cache gives the EqualLogic FS7500 the ability to scale performance. Each system provides 48GB of RAM (24GB in each controller node) that is used for the operating system and the mirrored, battery protected cache memory. - Page 8 NAS volumes and file systems can also be expanded without interruption or downtime. With support for CIFS connectivity from Windows systems and NFS connectivity from UNIX/Linux systems, the FS7500 and PS Series arrays represent a unified and scalable storage solution. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN...
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Page 9: Test Topology And Architecture
16 clients for file tests. Figure 1: Test topology diagram Our ESX servers consisted of two Dell PowerEdge R610 servers and two Dell PowerEdge R710 servers. Each had 48GB of RAM and two quad-core processors. We used the onboard 1 Gigabit network ports for management connectivity, and each server also had a pair of dual-port 10 Gigabit network cards. - Page 10 A Vdbench script was created that would generate I/O at the desired block size (or I/O request size) and run for a specific amount of time. After the test was run, we collected the results and analyzed them. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN...
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Page 11: Test Methodology
For all of our tests we monitored the response time as measured by Vdbench. We established a criteria to keep client response time to under 20ms, and in all of our tests never exceeded this. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... -
Page 12: Test Results And Analysis
In the case of I/O writes, the caching ability of the FS7500 allows it to more efficiently commit data to the back-end SAN either by coalescing adjacent writes or absorbing bursts of I/O requests from network clients. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... - Page 13 The first NAS volume is on the first 3 arrays, and the second NAS volume is on the remaining three arrays. This is expected behavior for the SAN as long as adequate free space is available in the pool. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN...
- Page 14 I/O exhibiting better performance. When a new FS7500 is added to an existing SAN, configuring the FS7500 to use a separate pool prevents it from impacting the performance of the existing pool. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN...
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Page 15: Planning And Design Considerations
NAS service IP addresses to allow for proper load balancing across multiple client subnets. The total number of NAS service IP addresses required will depend on the bonding mode used for the NAS service: BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... -
Page 16: Pool Configuration
If there is not enough free space, then additional arrays must be added to the pool. If there is not adequate I/O capacity to support the new file BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... -
Page 17: Volume Configuration
SAN HQ user interface and some of the many statistics that it can provide. Prior to adding a FS7500 to an existing SAN, Dell recommends using SAN HQ to collect statistics about the existing SAN. Administrators should carefully monitor historical disk capacity usage and trends to ensure that there will be sufficient free pool space to integrate the FS7500. - Page 18 However it is also expected that larger block sizes, such as from backup and restore, may result in slightly higher latencies. Figure 5 - SAN HQ data BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN...
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Page 19: Summary
7 Summary The Dell EqualLogic FS7500 can be deployed as part of a new installation or into an existing EqualLogic PS Series iSCSI SAN. When deploying into an existing SAN, administrators should monitor the existing SAN to understand the availability of not only data storage capacity, but also of I/O capacity. -
Page 20: Appendix A Vdbench Scripts
The “anchor” directory must be unique for each node. Example 2 – Vdbench script used for NFS file client * 100% random 8K, 70% read file I/O test. hd=default fsd=default,files=16,depth=2,width=3,size=50m fsd=fsd1,anchor=/nas/n1 fwd=fwd1,fsd=fsd*,fileio=random,xfersizes=8k,rdpct=70,thread=8 rd=rd1,fwd=fwd1,elapsed=600,interval=30,fwdrate=max,format=yes BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN... -
Page 21: Related Publications
Related publications The following Dell publications are referenced in this document or are recommended sources for additional information. Dell EqualLogic PS Series iSCSI SAN http://www.dell.com/equallogic Dell EqualLogic FS7500 Unified Storage Solution http://www.dell.com/fs7500 Dell EqualLogic Configuration Guide http://www.equallogic.com/resourcecenter/assetview.aspx?id=9831 ... - Page 22 THIS WHITE PAPER IS FOR INFORMATIONAL PURPOSES ONLY, AND MAY CONTAIN TYPOGRAPHICAL ERRORS AND TECHNICAL INACCURACIES. THE CONTENT IS PROVIDED AS IS, WITHOUT EXPRESS OR IMPLIED WARRANTIES OF ANY KIND. BP1016 Integrating the Dell EqualLogic FS7500 into an Existing SAN...