PowerVault⢠MD3200 and MD3200i: Array Tuning Best Practices. Page ii ..... 1/10 provides the best overall performance for redundant disk groups. RAID 1/10 .... It is imperative that the stripe size be correctly selected so that the host operating system is always ..... iSCSI - Internet Small Computer Systems Interface.
PowerVault™ MD3200 and MD3200i: Array Tuning Best Practices
Contents Audience and Scope .................................................................................................... 2 Performance Tuning Overview ....................................................................................... 2 Components That Influence Storage Performance ............................................................. 2 Basic Approach to Performance Tuning .......................................................................... 2 Application Software Considerations ............................................................................. 3 Configuring the PowerVault™ MD3200 and MD3200i Series of Arrays .......................................... 3 Determining the Best Raid Level .................................................................................. 3 Choosing the Number of Drives in a Disk Group ................................................................ 5 Virtual Disk Location and Capacity ............................................................................... 6 Virtual Disk Ownership .............................................................................................. 6 Calculating Optimal Segment and Stripe Size .................................................................. 6 Cache Settings ........................................................................................................ 7 Tuning Using Array Performance Data ........................................................................... 9 Using the Performance Monitor ................................................................................. 13 Other Array Considerations ...................................................................................... 14 Premium Feature Performance .................................................................................. 15 Considering the Host Server(s) .................................................................................. 15 Sharing Bandwidth with Multiple SAS HBAs.................................................................... 15 Considering the System Software ............................................................................... 16 Appendix ............................................................................................................... 18 Appendix A: Obtaining Additional Performance Tools ...................................................... 18 Appendix B: Glossary of Terms .................................................................................. 18
Tables Table 1. Table 2. Table 3.
I/O Size and Optimal Raid Level......................................................................... 4 Storage Array Standard Configuration Specifications ................................................ 9 Performance Tools ....................................................................................... 18
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