By Rich Wellner
Dan Kusnetzky has a good article about why people use virtualization. He distills things down to the following six goals:
- Higher Performance
- Increased Scalability
- Increased Reliability or Availability
- Workload Consolidation
- Application Agility
- Unified Management Domain
I'd probably add a couple that have some overlap, but are worth calling out independently:
- Reduction of Vendor Lock-in
- Disaster Recovery
You got me on missing the avoidance of vendor lock-in on the list. Disaster recovery, on the other hand, is just the extreme case within HA/failover.
ReplyDeleteThanks for the post!
Dan K
Yeah, disaster recovery is definitely related. It's worth calling out separately because when I talk to people about HA, most think about power supplies, multiple racks and those kinds of things. Only a minority think about "my DC just got hit by a tornado" so how will the rest of the organization get by.
ReplyDeleteBut, yes, absolutely from an objective standpoint there is significant overlap.
Anyone who has lived with tornadoes, hurricanes and housekeeping crews who unplug systems to plug in their buffers is sure to think a bit differently about that topic.
ReplyDeleteI appreciate the pointer to my blog!
Dan K
Or worse yet, cleaning crews who plug stuff in. Back in the beginning of Virtual Reality research, someone I knew had 200K worth of Sun graphics workstations, of which 3 out of 4 got smoked (literally) thanks to someone plugging them into the wrong (and much higher) voltage at a trade show.
ReplyDelete