Can it be true when the company (I have seen it with simplehelix.com) provides 100% Uptime SLA?
What else companies provide it?
Do you believe in that?

It's complete rubbish. I'd much rather a company has been running for 5 years with 95% uptime than 3 months with 100% uptime. If they say they've got 100% uptime then they're either:

• a) Lying
• b) Haven't been running for very long.

That would be true gorda, if they were saying they have 100% uptime... which they're not. They say they provide a 100% uptime service level agreement.

You don't require any special technical magic to do that, it's certainly not impossible, and you can be running for 10 years and still have a 100% uptime SLA!

More interesting than the percentage uptime guaranteed under an SLA is what they give you if they don't meet that (which is almost inevitable at 100%). Since that number is absurd, presumably they're not offering much. My guess is credit for your next payment cycle amounting to the downtime (which isn't going to be much, in the grand scheme of things).

So my advice is, don't look at the percentage in an SLA, look at the terms of the SLA itself: what are they willing to offer if they don't meet the uptime, or, are they willing to put their money where their mouth is?

I didn't actually read the site, I was replying to the post

It says SLA in the post and in the thread title. I didn't look at the site either.

I didn't actually read the post either. I was replying to the uh first two words of the title.

In any case if Simplehelix.com guarantees that it must be true, to know that for sure you have to sign up with them and see how they provide it.

That guarantee that simplehelix.com offers isn't something unusual, some other companies provide it as well.
That feature is quite possible and having it from your web hosting company is always pleasant.