PernixData RAMs in yet more speed to FVP

PernixData, the clusterable VMware IO cacher, has added compression to its RAM caching, meaning more effective data in RAM and more caching with its FVP software.

V2.5 FVP has Distributed Fault-Tolerant Memory with LZ4 compression algorithms (DFTM-Z). These algorithms are fast and lossless and DFTM-Z checks data to see if it should be applied; it’s adaptive.

The compressed part of a physical host server’s RAM is limited in size to around 25 per cent of the total.

Total RAM capacity can have an effective fourfold increase with DFTM-Z, according to PernixData, thus speeding up a host’s ability to service its VMs faster, and to house more of them, maybe.

It asserts “compression is adaptive based on traffic characteristics, dynamic, and transparent to the workload. This ensures compression overhead never adversely impacts VM performance.”

The software also offers Intelligent IO profiles. FVP v2.5, according to the marketing spiel, “dynamically detects in real-time which workloads are suitable for server-side acceleration and which are not (e.g. large sequential reads and writes). In the latter environment, reads and writes are automatically sent right to shared storage, bypassing local server media.”

This avoids FVP’s host server flash and RAM resource pools being used up with non-cache-worthy data.

Role-based access controls (RBAC) have also been added to FVP with access levels for "none", "read-only" and "read-and-write". This feature suits multi-tenant environments which can have different levels of users.

The Intelligent IO Profiling and RBAC features are available now with all editions of FVP v2.5 (Standard, Enterprise, Subscription, VDI and Essentials Plus). DFTM-Z is available now in version 2.5 of FVP but not in the Essentials Plus edition. ®