Pingdom - With website monitoring from Pingdom you will be the first to know when your website is down. No installation required. 30-day free trial.
PetaSAN - PetaSAN is an open source Scale-Out SAN solution offering massive scalability and performance.
StatusCake - Website Uptime Monitoring & Alerts – Free Unlimited Downtime Monitoring
Dell EMC UnityVSA - dell-emc-unityvsa-overview-deployment
Better Uptime - We call you when your website goes down
Open-E Data Storage Software SOHO - Get Open-E DSS V7 SOHO (Small Office Home Office), a free version of Open-E DSS V7 with basic functionalities of NAS/SAN software platform.