Advantages of storage data caching

Server-side caching of storage data can increase virtualization density, especially when the storage subsystem is congested.

Storage data caching has the following advantages:

Latency

Analytical and transactional workloads have reduced query-response time because the solid-state drive (SSD) storage has lower latencies. If you use server-side caching, the average latency for a transactional workload can be reduced by half.

Throughput

Online transaction processing (OLTP) workloads have higher transaction rates because the SSD storage provides better throughput.

Write throughput

In environments where the storage area network (SAN) is congested, the flash device, which is used as a cache, can offload a significant percentage of read requests. When read requests are offloaded, the SAN can have better write throughput, and can effectively serve a larger number of clients and hosts.

Smaller memory footprint

If a flash cache device is configured, some workloads can perform even with a lower memory footprint.