DOCS-1245: Improve backup strategy overview.

[michaeltwofish]

Both filesystem snapshots and mongodump can be point in time. Clean
up the language. Leave the details that will help people make a
decision as to their best options in the linked detail pages. Put
the links in the same order we've talked about the options.

[tychoish]

Hi Michael,

I've been trying to touch base with you on IRC, but the time difference hasn't been kind to my efforts. Thanks so much for your work here. To get larger non-trivial patches like this merged in, we'll need you to sign the MongoDB/10gen contributor agreement, which is located here:

http://www.10gen.com/legal/contributor-agreement

I'll continue discussion of this patch here:

https://jira.mongodb.org/browse/DOCS-1245

Cheers,
sam

[michaeltwofish]

Thanks, Sam, I've made a couple of efforts to catch you on IRC too, and I'll continue to do so. Is there a docs-specific channel?

I've signed the agreement and continued the patch discussion on the ticket.

[michaeltwofish]

I don't think adding pull requests sends notifications, so I guess this is a polite bump. Please forgive me if you've already seen it and you're just busy, say, working on a release.

[tychoish]

Thanks for the bump! I hadn't seen the revision, and I still need to get this in front of someone else just for sanity, but its definitely still on my radar.

[tychoish]

Just to keep you up to date, I've asked a couple of engineers who've worked on mongodump and backup strategies in the past to take a look at this, and I'll get back to you when I know more.

[kay-kim]

Hi Michael -- thanks for your time and patience with this. The backup strategy page has undergone significant rewrite, and as such, this pull request no longer applies. Apologies for the belated response, and thanks again for your time and efforts. Much appreciated.