I find myself agreeing with Diego!
In this discussion I read about backing up to various things be that NFS and FTP and 'IP Services'. I also note that some of the backups are parked on Windows. And I get the heebie jeebies!! Why?
Backups aren't just done to check off the box: "Do you have a backup?" Backups are done for one reason only: To be able to recover. WHAT you recover varies dramatically from a few rows accidentally deleted a day ago, to data from a month or year ago, to all IFS data due to a ransomware attack, to the entire system due to fire, flood, tornado, hurricane, etc.
Most have never needed to recover an entire system, and that's a good thing, but you absolutely must know how and must practice. It's a bad time to learn that you have no bootable device on your server when all your data needs to be restored. It's a bad time to learn that your backups have themselves been compromised because they were also flooded, burned, blown away, or they were encrypted by ransomware since they sat on an NFS share or an FTP server or on a Windows server.
Additionally the extra steps required to build out a server, FTP back a ton of save files or catalog entries, then recover the system both add complications as well as time! Time that is likely excruciatingly critical just then.
Yes tape itself is un-sexy for sure. But it's easily stored 'far far away' and cannot be ransomware encrypted, and cheaply stores for a very long time. And it CAN be encrypted by you for secure storage.
Before you say: "Oh Larry, Tape is so 20th Century" let me head that of with: "Yep you are correct!" thus, we don't use it as primary backup in any new design. We focus on the the key questions required in case of disaster.
1) Can I IPL from this backup device and re-install the system?
2) Can I use IBM i Native save and restore commands to read and write to this device?
3) Is the location where my backups live susceptible to vulnerabilities such as, encryption, theft, alteration, etc?
4) Can my backups automatically end up 'far far away' upon completion of the backup with no human intervention?
5) Is the device holding my backups well supported, easily maintained, expandable and will it properly notify me if a drive or other component fails?
6) Is the device efficient with its storage and power use? Remember tapes stored on a shelf use zero power every month in a row, forever. A massive NAS or server spinning hundreds of drives holding backups going back 5 or 10 years consumes a lot of electricity and makes a lot of heat. Often this is for data that is never read even once after being written. Piling on more drives due to inefficient compression just makes this problem worse.
7) In an emergency where I need to recover, how many things will I need to get working correctly before I can being rebuilding my i? With tape it's 1: The tape drive. Simple, load it and make with the restore! Compare that to some of the setups being discussed where it may take longer to get all that running and available than it takes to recover the i! In a disaster time is critical, the backup solution CANNOT add time frustration or vulnerabilities to the recovery process!
In our cloud at iInTheCloud all of our IBM i backups go to fiber attached VTLs with off site replication capability. They use native IBM i save and restore commands and happily function with BRMS or native commands. Physical tape is available for import and export as the customer requests or requires.
My point here is your backup is only as good as the ability to recover from it.
------------------------------Larry BolhuisIBM Champion for Power SystemsChief i-entistFrankeni Technology Consulting, LLCMiddleville MI6162604746------------------------------