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Spending Wisely on Performance
Published in Hubbert Smith, Data Center Storage, 2016
IOPS, the number of input/output operations per second; measured in I/O per second. Typically, published IOPS are for lab or tradeshow workloads: 512 Byte I/O size, read-only, and sequential. That’s a useful corner case in the lab, but there are no real-world workloads which are 100% small, 100% read, 100% sequential. That’s not the real world. Real world workloads have a mix of large and small transactions, a mix of random and sequential transactions, a mix of read and write transactions. This book’s appendix includes instructions for a free, simple, and commonly used tool called IOmeter. If you are dealing with a performance issue, insist on profiling the real-world workload and using that profile as a baseline, then using that profile to establish a metric for acceptable performance.
The Impact of Flash on Data Protection
Published in Preston de Guise, Data Protection, 2020
Particularly in enterprise use, a performance characteristic we often focus on with storage is the IOPS—the number of input/output operations per second the drive can process. A 7,200 RPM SATA drive—of the variety commonly used in end-user computers—will provide somewhere between 75 and 100 IOPS, while those high performance 15,000 RPM SAS drives are considered to offer anywhere between 175 and 210 IOPS—which is frequently averaged to around the 190–192 IOPS mark.
The Impact of Flash on Data Protection
Published in Preston de Guise, Data Protection, 2017
Particularly in enterprise use, a performance characteristic we often focus on with storage is the IOPS—the number of Input/Output operations Per Second the drive can process. A 7200 RPM SATA drive—of the variety commonly used in end-user computers—will provide somewhere between 75 and 100 IOPS, while those high performance 15,000 RPM SAS drives are considered to offer anywhere between 175 and 210 IOPS—which is frequently averaged to around the 190–192 IOPS mark.
Efficient resource management techniques in cloud computing environment: a review and discussion
Published in International Journal of Computers and Applications, 2019
Frederic Nzanywayingoma, Yang Yang
SmartQoS function intelligently schedules storage resources based on the priority of services, optimizing system resource allocation. It dynamically allocates resources of storage systems, meeting specific performance requirements on the IOPS, bandwidth, or latency. SmartMotion function dynamically relocates data based on the service changes to balance loads of storage systems. SmartPartition function sets cache partition requirements for critical services, dynamically allocates cache resources to services based on the requirements, and isolates the cache resources between services, preventing unnecessary cache competition and ensuring performance of critical services. Resource Performance Tuning: View and manage resource optimization features including SmartTier, SmartQoS, SmartPartition, SmartMigration, and SmartCache.