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Thin-Client Server Solutions Citrix MetaFrame Presentation Server Microsoft Terminal Server Server-based computing, by definition, places the entire responsibility for data retrieval, processing, and storage on the server. While this method of leveraging hardware and software resources can be very cost-effective, it also places demands on resources that can degrade client performance. The performance of storage- and memory-intensive user applications is especially sensitive to this model of computing. Heavy loads can result in unacceptable client performance Under moderate to heavy server loads, users of Citrix MetaFrame Presentation Server and Microsoft Terminal Server may experience poor response times, extended log-in periods, protracted screen-refreshes, and very slow print queues. During very heavy load periods, application startup times can increase to minutes instead of seconds, SQL queries and other compute- and data-intensive operations can lengthen to the point where processes must be killed for lack of responsiveness. As increased demands are placed on system resources - particularly storage resources - context switching rates can quickly rise above healthy levels. At very high rates, the system is actually realizing less work. This is because threads and processes are increasingly unable to access the resources they require, so the operating system must switch many times from one waiting thread or process to another until it finds one with available resources. This condition is frequently accompanied with high levels of disk thrashing. Use DataCore's UpTempo to boost Disk I/O performance When disk I/O bottlenecks limit system performance, other system resources wait idly by. By putting these resources to work, system performance is improved. UpTempo's powerful disk cache help optimize system resource utilization by applying processor and memory resources to the I/O bottleneck problem. The UpTempo block-level cache assesses your workload I/O patterns and optimizes the flow of I/O traffic between memory and disk locations. Inserted into the path of the I/O subsystem, it learns to cache the most active read/write disk I/O. With UpTempo enabled the cache technology reduces context switching, enhances server response and results in a much more satisfying and productive user experience. Is your disk light blinking? Try UpTempo Now! 
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