Category Archive for: ‘VirtuCache’

PernixData’s FVP vs. Virtunet – Both VMware Kernel Write Caching Software

More similar than different Both us and PernixData differentiate from rest of the host side caching vendors in similar ways - that we are kernel mode software; both of us cache writes in addition to reads; have data protection strategies in place to prevent against data loss in case of multiple simultaneous hardware failure; do not require networking or storage to be reconfigured; and do not require agents per VM or VM per host. Below is how we compare on the most important criteria one...

How to Select SSDs for Host Side Caching for VMware – Type, Model, Size, Source and Raid Level ?

Go with enterprise grade and not consumer grade SSDs. And deploy the SSD behind a good Raid controller (queue depth > 128). Samsung SM863 and Intel S3710 are good choices. The SM863 is better value for money. Also, don't skimp on the Raid controller since you don't want it to choke before the SSD does. Though this article is in the context of using SSDs with VirtuCache (our Host Side Caching software for VMware that improves the performance of any SAN based storage appliance), these...