Yeah... Wire cutters.
People that open exe attachments on hospital computers shouldn't be allowed on the Internet.
ZFS now has triple parity, as well as actively checksumming every disk block.
You can also store multiple copies of blocks, however there is a caveat on this. From the #zfs channel on Freenode:
[2009-09-12 09:24:03] [kjetilho] in ZFS, you need to add multiple disks at a time to get redundancy
[2009-09-12 09:24:49] [kjetilho] you can specify "copies=2" which means all data will be stored twice, but you're not guaranteed the copies will be on different disks
So you can store multiple copies of blocks, but you can't guarantee the copies will be on different drives? I don't know whether to laugh or cry.
Good advice I've gotten for a presentation:
1) Have a point. What is the goal of your presentation? e.g., "I want everyone to walk out of the room knowing that..." try to keep this relatively short, like 3 major, related points. Then focus everything in your presentation around getting across those points. Depending on the type of presentation, I may work the points in to the introduction and the conclusion; but they have to be there implicitly, otherwise your talk will likely just be a bunch of random information, and your audience won't remember much.
2) Consider where your audience is coming from. You can keep an audience's attention in several ways, but one simple straightforward way is to start with something from the audience's perspective, and keep coming back to the audience's perspective. If you start with a story that connects with them, and then every time you finish some new piece of information you say, "Now, you may be thinking X. Well,
3) People remember pictures about 1000x more easily than words, and stories about 100x more easily than plain prose points. Use pictures and stories, but make sure your pictures and stories actually support your point from #1. If you just tell a good joke, or share a crazy-looking picture, everyone will laugh and enjoy the presentation; but if it doesn't have anything to do with your points, they'll remember the picture or the story but not your points. In that case, you might as well have given them a stand-up comedy routine.
For God's sake, stop researching for a while and begin to think!