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Improving Console Performance with Fast Disks & User Roles

Improving Console Performance with Fast Disks & User Roles. Session Objectives. Maximizing Performance – Why is the disk subsystem crucial to console performance and what’s the best disk configuration.

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Improving Console Performance with Fast Disks & User Roles

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  1. Improving Console Performance with Fast Disks & User Roles

  2. Session Objectives • Maximizing Performance – Why is the disk subsystem crucial to console performance and what’s the best disk configuration. • Extending Performance – How to further improve console performance by implementing User Roles.

  3. Performance • Native Performance (NP) • Sequential IO • Interactive Performance (IP) • Random IO • Track to Track Seek Time

  4. Resources - The Big Four • Memory – Quantity • Processor – Speed • Network* – Quantity & Speed • Bandwidth & Latency • Disk - Multiple Variables • Redundancy • Quantity (Capacity) • I/O • Speed

  5. Disk Subsystems • Disk subsystems performance influenced by multiple variables: • Storage tuning very complex due to many variables. Disk Subsystems RAID Level 10 I/O Rates n+1000 Transaction Times < 20ms Capacity 36, 72, 144, 300+

  6. RAID 10 • Minimum Disks: 4 • Advantages: Combines read performance of RAID 0 w/ the fault-tolerance of RAID 1 • Fault-Tolerance: Excellent • Application: High performance applications requiring data protection and maximum read performance

  7. The ChallengeCapacity vs. Performance • SAN Optimized for Capacity. • High Capacity Disks Reduces Spindle Count – Impedes I/O. • Excess Capacity Shared Out. • Cost per GB

  8. Scenairo • 5000 Agents / 7 Day Retention • Primary Database = 170GB • Single Disk: • 15,000K RPM, SCSI/Fiber Channel • 125-225 IO at 80% • Greater than 100% - IO Requests Queued Thus Increasing Latency – Over Size • IO Requirements • Avg. Disk Sec/Read < 20ms / No Spikes* • Max. Disk Reads/Sec = 6000 (Size for this, not the average)

  9. Building the Disk Subsystem • 6000 IO = 26 Disks (6000 IO / 225 IO) • RAID 10 : • 36 GB Disk = 936GB Raw / 468 Usable (36%) • 72 GB Disk = 1872GB Raw / 936 Usable (18%) • 144 GB Disk = 3744 Raw / 1872 Usable (9%) • 300 GB Disk = 7800 Raw / 3900 Usable (04%) • Extra space makes for a terrific parking lot, just minimize traffic.

  10. Best Practices • What the customer needs to know: • Required Database Size • Avg. disk sec/read < 20 ms – maximum value • Provide IO – Average & Maximum (n+1000) • Information above necessary to design an appropriate disk subsystem. • Let the SAN and Disk folks figure it out! • Observed vs. Theoretical Capacity

  11. Extending PerformanceThe Operations Console • Operations Console introduces load on OperationsManager database. Resource Intensive • RMS influences performance too. All operations consoles connect to RMS. • Unusually High Activity • Disk Persistence Queue • Large Number of Monitors • Config Files – Large & Frequently Modified • Solution: 64-Bit, Fast Disk & Physical Memory

  12. Extending Performancewith User Roles • Typical add more and more resources to get performance. Maximize what you have by reducing the overhead: • Implement User Roles to control views. • Why update objects not needed? Overhead. • Considerably improves user experience in console. • Deploy Web Console • Limit Desktop Consoles • Challenge – Requires Planning and Maintenance

  13. Resources • RAID Calculator: http://www.dnfdefense.com/resources.asp/section/Reading~Room/category/Technical~Information/options/RAID~Calculator • OpsManJam Web Site: http://www.opsmanjam.com

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