Hello to all community, This topic is to know what kind of experience you had with a Synology NAS and it hosting many Time Machine backups, so as to know if I am the only one having a disastrous experience. I aimed to keep all first-line backups in the same place, namely the Synology NAS, so as to avoid the hassle of manually connecting a FireWire drive to the Macs knowing these have well-known issues with external hard drive standby. Mine is an up-to-date Syno NAS hosting a TM backup, exactly like explained there. It is cabled with a single LAN cable to a Gigabit switch, no wifi, itself connecting 5 computers, 4 NASes (inc. Syno, but all running some Linux flavor), one IP phone, the switch just relaying what the DHCP server in the modem is telling it to do. Nothing unusual, and this setup works pretty well. Doesn't run any fancy software, just AFP. The Syno NAS usually works for weeks at a time without a hitch, but recently, during heavy use (was gobbling up data from one computer, another NAS while undertaking TM backups from two Macs at the same time), it started repeatedly disconnecting itself from all computers, to the point TM backups couldn't complete, and were then declared "corrupted" by one Mac, while the other simply refused to complete verification, let alone do an incremental backup. I managed to restart the backups, but losing all previous ones in the process as they couldn't be repaired. Obviously, I can't be checking the TM backups every day, can I? According to Synology's tech service, my network is unstable and may well have caused the corruption. They ignored the fact that this is probably a bad assumption as the IP phone has not seen a single glitch like it should if the LAN was really unstable, plus the fact no other server on the network posed any issue even with sustained transfers. Their so-called "solution" is to attempt a direct connection to a Mac completely insulated from the Internet (and therefore, unusable), and see if the problem reappears. The problems are, first, this defeat the very purpose of a NAS, second, even with a normal configuration, it takes week to appear - but when it happens, it's not recoverable. I don't know how to reproduce the issue exactly, and at the same time, having to manually switch on a regular external HDD on each machine defeats the whole pupose of having a centralized (and expensive!) storage device. A long post leading me to some questions: 1- Is Time Machine on a NAS prone to issues so severe they result in losing all backups? 2- Is Synology's NAS box too "sensitive" on a busy LAN? Do something the other NASes don't? 3- Is Time Machine inherently intolerant to problems that can happen on a LAN such as lost/late packets? 4- What other protocol would allow versioned backups on the LAN and "repair" itself in case of problems? Teh good ol rsync? Other, non-proprietary ones? 5- Should I try to make the Syno crash and capture what's going on with, say, Wireshark, although I don't know what I would be looking for? - What is your experience with Synology NASes and Macs, overall? I feel ripped-off at the moment, but considering their overall good reputation, maybe it's just a case of "holding it wrong"