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You really don't need almost any of this stuff. If you have small on-prem needs just grab a couple fiber links, try for diversity on paths for them (good luck)

by phil21 5y ago

You really don't need almost any of this stuff. If you have small on-prem needs just grab a couple fiber links, try for diversity on paths for them (good luck), add some power backup if it fits your needs, and be done. If you are going to the level of the above, you go with co-location in purpose built centers at a wholesale level. The "layer1" is all done to the specs you state and you don't have to worry about it. On-prem rarely actually means physically on-prem at any scale beyond a small IT office room. It means co-locating in purpose built datacenters. I'm sure examples exist, but the days of large corporate datacenters are pretty much long over - just inertia keeping the old ones going before they move to somewhere like Equinix or DRT. With the wholesalers you can basically design things to spec, and they build out 10ksqft 2MW critical load room for you a few months later. A few organizations will find it worthwhile to continue to build at this scale (e.g. Visa, the government) but it's exceptionally small.

laumars 5y ago
> You really don't need almost any of this stuff. If you have small on-prem needs just grab a couple fiber links, try for diversity on paths for them (good luck), add some power backup if it fits your needs, and be done. Then you’re not running HA and thus the argument about cloud downtime being “worse” than on prem is moot. Obviously if your SLA is basically “we will do our best” then there are all sorts of short cuts one can take. ;)
- phil21 5y ago
  My (late) point is that when people speak about "on-prem" these days, they are not talking about building corporate datacenters on campus. 30 years ago when you talked on-prem that's what this meant. It's now shifted to on-prem meaning your own hardware in massive shared facilities that handle all that "hard stuff" like redundant power and cooling for you. Bespoke datacenter builds for true-on prem certainly exist, but it's not what that term typically means any longer - at least in my line of business. When I'm selling racks of colo now, my customers are calling that their on-prem facilities. In fact a large part of my previous business was dismantling true "on-prem" facilities to move to such large shared wholesalers.

by phil21 5y ago

laumars 5y ago

> You really don't need almost any of this stuff. If you have small on-prem needs just grab a couple fiber links, try for diversity on paths for them (good luck), add some power backup if it fits your needs, and be done. Then you’re not running HA and thus the argument about cloud downtime being “worse” than on prem is moot. Obviously if your SLA is basically “we will do our best” then there are all sorts of short cuts one can take. ;)

phil21 5y ago
My (late) point is that when people speak about "on-prem" these days, they are not talking about building corporate datacenters on campus. 30 years ago when you talked on-prem that's what this meant. It's now shifted to on-prem meaning your own hardware in massive shared facilities that handle all that "hard stuff" like redundant power and cooling for you. Bespoke datacenter builds for true-on prem certainly exist, but it's not what that term typically means any longer - at least in my line of business. When I'm selling racks of colo now, my customers are calling that their on-prem facilities. In fact a large part of my previous business was dismantling true "on-prem" facilities to move to such large shared wholesalers.