Only read performance is improved by HP MSA's internal caching and tiering features.1 In comparison, VirtuCache improves the performance of reads and writes for MSA, and it does so by caching to in-VMware host SSD or RAM. There are other differences as well.
CEPH is a popular open source storage software. However its write latencies are high. VirtuCache caches CEPH volumes to in-host SSDs and by doing so reduces VM level latencies considerably.
As it relates to storage, genome sequencing workflow has two requirements.
Need for cheap ($/GB) Petabyte scale storage.
Need for faster processing of Genome files under analysis , many of which are a few hundred GB in size.
Dell's PowerEdge VRTX hyper-converged appliance can either have all hard drive datastores or all SSD datastores, but you can't have SSDs act as tiering or caching media for VRTX volumes. That's where VirtuCache comes in.
By caching hot data to in-VMware host NVME SSD and RAM, VirtuCache was able to improve the performance of Jenkins based Continuous Integration(CI) process, which in turn resulted in quicker build-test cycles.
Microsoft Dynamics AX transaction processing is write intensive and its reporting is read intensive, thus putting pressure on customer's existing storage infrastructure. By caching frequently used data from customer's existing storage to in-host SSDs, VirtuCache was able to reduce read and write latencies for AX running within VMware VMs.