Dell PowerVault MD3000 Manuel d'utilisateur

ARRAY TUNING BEST PRACTICES dell.com/PowerVault POWERVAULT MD3000 AND MD3000i

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page10 traffic virtual disks share a disk group, even

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page11 first 128KiB of an I/O is written to the first

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page12 4.6 Cache Settings Read-ahead cache can be con

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page13 4.6.3 Setting the Storage Array Cache Block S

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page14 4.7 Tuning Using Array Performance Data 4.7.1

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page15 4.7.3 I/O Distribution I/O can be charact

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page16 to how tightly the variance of sequential or r

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page17 In the first generation of firmware (see Figur

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page18 In addition, the stateCaptureData.txt file pro

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page19 4.7.5 Write Algorithm Data It is important

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page2 D

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page20 RMW, or Read-Modify-Write, is the second-best

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page21 4.8 Using the CLI Performance Monitor The C

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page22 For a complete list of commands and instructio

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page23 5 Considering the Host Server(s) 5.1 Host Ha

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page24 Figure 11: MD3000i Advanced IPv4 Settings: VLA

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page25 used at certain times, providing a point-to-po

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page26 Microsoft provides the diskpar.exe utility as

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page27 Appendix A: Obtaining Additional Performance T

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page28 Appendix B: System Troubleshooting For info

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page29 Appendix C: References Dell™ PowerVault™ Mod

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page3 Table of Contents 1 AUDIENCEANDSCOPE ...

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page30 Appendix D: Glossary of Terms Term Definitio

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page31 Term Definition directly on the drive in lieu

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page32 Term Definition by t10.org Segment A segment i

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page4 1 Audience and Scope This document is intended

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page5 The answers include: • “It depends…” There ar

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page6 • Profile of mean I/O direction; this is usual

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page7 Physical disk cost is not the only factor that

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page8 4.1.1 Selecting a RAID Level - High Write Mix S

Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices December2008–RevisionA01 Page9 • To optimize for data transfer rate, multiply