Now for the Hard Drives. We have had a few drive failures on the 600/CS Platform since the first one was installed in Dec. of 2007. We have had several X-Class drive failures. None of these systems are more than 4 years old.
The most memorable drive failure was on a 600 about this time last year. It was one of our larger customers. (Approx. 165 phones). The system started having numerous intermittent issues. Calls dropping mid conversation, voice mail problems, ETC, ETC. System did not come back up after reboot. After several attempts of booting up the system with and without the M3, trying one or the other drive without the M3, the system came back up. They were still experiencing some strange problems but they were small in comparison to having no dial tone at all. We backed up the programming and waited for the new drives to arrive. When we sent the defective equipment back to ESI they were quick to blame us for the problem because we didn't put the nylon washers back on the M3 when we assembled it for defective return. Nice piece of engineering on their part. Lets make it extremely difficult to properly install the redundancy for the main piece of equipment that runs the entire system.
