@scottalanmiller said in Backups - how much does backup performance matter to you?:
All comes down to your speed needs. Is the extra $100 a good price for the extra speed? What does the extra speed mean to your business?
I comes down to what you are backing up, and as you said, the needs of the business.
If you are backing up a lot of data, and it goes too slow, the run time may leak into business hours, and it'll put some burden on your network and productions servers, slowing it down and causing a mess for the users who need to work. It could also delay "domino effect" backups, causing too many to happen at once, or for backups to be skipped entirely... but that depends on the backup software too.
On the other hand, if you are backing up something that requires a lot of retention, snapshots, frequency, etc... you'll need to have available space for that, and also I can see how speed fits in.
It's always going to depend heavily on the businesses needs, and it will be very different from place to place. Some larger businesses may have lighter requirements than a much smaller one.
If the extra speed of the backup process has no effect at all on the business, then is it really worth the extra money? If the extra speed will have actual positive impact on the business, then it may be worth it.
You also need to consider future growth, at least near-future growth. And, what happens if you fill it up?