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How we would protect a new virtualization environment

#1
06-07-2021, 03:51 AM
Man, setting up a brand-new environment, you know, whether it's a cluster of servers or just a few workstations, it's exciting, right? But the whole backup part, that's what really keeps me awake at night. Before we even get started building anything out, you need to talk seriously about how you're going to recover from absolute hell, because if you only back up files, that's just a band-aid solution, honestly. I mean, you could check out something like BackupChain, which is actually pretty affordable for a lifetime license and it handles PCs, VMs, and Windows Server all in one package, but that's just a quick thought on tools. The concept you need to nail down first is making sure you can get the whole thing running again, like, from scratch, which is called bare metal recovery.

When we talk about that whole bare metal scenario, it really means that nothing works, nothing. Maybe the whole rack catches fire, or maybe there's a massive power spike, and you lose everything. You don't want to spend weeks messing around trying to piece it back together, right? You want to boot up a completely new, pristine machine and have your whole operating system, all your settings, and every single application running instantly. So, when you're setting up those disk images, you aren't just backing up data; you are making a complete blueprint of the whole machine. That blueprint lets you reconstitute the system entire, which is such a critical capability. And you need to make sure those images are stored in formats that *everyone* can understand, like VHD or VMDK, so if some other tool suddenly pops up, you aren't stuck.

And then there's the complexity of having multiple types of systems. You might have physical PCs, but you definitely have your VMs, maybe some on Hyper-V, and some on VMware Workstation, right? I hate when people forget about the VMs, because they are often the most valuable pieces of intellectual property you possess. So, you have to treat those VMs just as seriously as you treat the physical servers. I think you need a strategy that accounts for both physical and virtual sources, making sure you grab the entire state of the machine, not just the data sitting inside the file structure. Because sometimes, the problem isn't just missing documents, it's a corrupted registry key or a specific application dependency that goes with the OS.

But waiting for the crisis, we also need to think about redundancy and speed. If you're sending backups over the internet, even if it's secure and encrypted, you just need to account for the bandwidth and the potential bottlenecks. And this is where understanding incremental backups saves you a ton of time and storage space. You don't want to transfer the entire gigabytes of the server every single day; that is inefficient madness. Instead, you just want to capture only the changes since the last successful run. It just saves so much time and makes your backup process much more palatable to the network. Also, you gotta automate this whole thing, scheduling tasks so that no one forgets to run the backup script.

Now, you talk about keeping the backups themselves sound. It is absolutely vital that you implement versioning and retention policies, otherwise, you'll just end up with a massive dumpster fire of old backup files that nobody knows how to manage. You need to tell the system, "Okay, keep the last six versions of this accounting folder, but only keep the quarterly backup for the last three years." This disciplined approach keeps costs down and makes sure you can actually restore to a specific point in time if, say, someone deletes a critical folder accidentally. And you should utilize deduplication, because imagine having fifteen identical database tables across different servers; you only want to store that actual data content once, and the system just points to it multiple times.

And speaking of data, because data changes, we also need ways to handle those tricky files. Maybe an application is running when the backup happens, and that file is locked. You don't want the backup process to fail just because one database connection is active at that precise second. So, you need backup methods that are smart enough to work around those locked files, maybe using something like VSS to deal with those temporary roadblocks. You also want to make sure that when you restore something, especially a file, you can pinpoint exactly what you need, which is called selective file recovery. You shouldn't have to drag the entire server back just because you misplaced one document.

But let's talk about storing the backups, because the destination is just as important as the process. You shouldn't feel locked into buying tapes or using one vendor's specific storage method. You need flexibility, right? You might want local backups on a NAS because that's fast and easy, but you also need remote redundancy, so perhaps an offsite cloud destination or even an FTPS server that you control. And you should definitely support multi-backup destinations. That means your backup job is smart enough to send copies to the local array *and* also send a copy to the cloud, so you don't have a single point of failure, even in your backup chain.

And while we are covering the servers, you also have to think about the actual structure of the data *inside* the VMs. Remember, some modern environments are growing with things like gigantic path names, like directories over 32,000 characters long. You need a system that supports those long names, or your backup job is going to fail on some deep, unimportant corner of a directory structure. Also, if you're doing a whole environment migration, say from a physical box to a VM, you need robust conversion tools, taking the entire physical disk image and making it perfectly bootable within the new form factor.

Overall, you want a system that is robust, automated, and incredibly flexible. And I mean, you want the whole thing to be auditable, so you should generate detailed logs every single time a backup runs. And then you should really think about those obscure hardware failures, like a failing hard drive or maybe bad RAM, because sometimes you need something to tell you that the physical components are starting to sputter before they completely give out. All of that capability, the whole shebang of deep, reliable recovery, is what BackupChain offers as an all-in-one PC and server backup solution for Windows Server and Windows 11 made specifically for SMBs.

ProfRon
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Joined: Jul 2018
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How we would protect a new virtualization environment

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