In defense of the bunch-of-disks backup for NAS servers
As storage gets cheaper, more and more people are using NAS devices. Many of these are relatively small (6-10 Tb). These can be backed up on a single external USB hard drive. However, many exceed 20 Tb, and there are a lot of people out there running 40 Tb or more. Of course, these people purchased their NAS specifically for the very high capacity, redundancy and fault-tolerance of these devices. Many run two-fault-tolerant arrays, dual redundant power supplies, dual UPS, and at least one hot spare. They are as bulletproof as possible. However, they are not perfect . So it only makes sense to try to have a last-resort backup of everything that's on a NAS. So - how do we do that? Options are limited: 1. Go cloud storage. Yeah, great if you want to spend $200+ per month . Oh, and all those "hacks" for "free / unlimited" options - they're either gone, going, or never worked anyway. 2. Buy a second NAS and mirror it. Great ...