I'm going to give my post de facto thoughts on this appeal. If me posting in someone else's ban appeal is impolite or against policy (I don't recall seeing one), then I welcome staff to remove this post with haste.

I never haven't any other trouble with the people but only one its about "Guard" i cant get him i hate him i dont like him and i dont respect him

As of now, the SentinelCraft community is fairly small and very tightly knit. If you can't get along with just one person and hate on that one person, it has the potential to leave an impact on a lot more people than just you and that person. What was it that caused you to disagree with this one guy? Something had to have happened. You can't just hate on someone without any real reason to (well, you can but it'd be stupid and pointless and mindlessly destructive). So why do you hate on each other and what can you do to settle your differences?

i  griefed because i have a chance to get carpets i have needed carpets too much

And why was griefing someone the first thing that came to mind as opposed to setting up a sheep farm? What would you have done after you ran out of carpet? Grief someone else? Seems very unreasonable to me that THAT was your first course of action.

lets drop this

No. No one, not even non staff, can drop anything. Everything you say and everything you do will leave an impression on everyone that sees it. No resets. No do overs. Ask yourself, "What impression have I left?". And then ask "What can I do to change this impression for the better?". I am fairly sure that no one wants to be viewed as a carpet thief. Your goal was to atone for that and give clear indication as to why you would never do such a thing again.

To summarize: Get along with everyone and don't steal resources from other people. Also, nothing will ever be dropped by anyone.

You missed something fairly big. The achievement command for scoreboards. Using TAB completion results in it exceeding the maximum chat history. There's also the summon command. These'll be useful to map makers and will bring about some really really neat stuff. Not too useful for the average player but I'd hardly consider it a "small" thing. (Sorry, I was kinda offended by the fact that the map making tools weren't listed and then was dismissed as a small addition)

Fishing Mechanics have also been overhauled. Water breathing potions will also be brewable with a special fish.

My opinion on upgrading: When we upgrade to 1.7 people that wish to see the new terrain can go out further in the world (personal recommendation: use the nether for quicker traveling). I really don't find a map reset that necessary since no mechanics or anything were changed. Any contraption built in 1.6 (and 1.5, for that matter) will work in 1.7. No real point in restarting since nothing will be broken by the update. Would just be unnecessary tears for what would be gone over a terrain update that, again, can be experienced by simply travelling outward.

It's not exactly intended to be used for THAT much storage. If you are at the point where a large quantity of minecart chests like that would be necessary for any sort of item, I would recommend actually using those items to achieve something or give them away to someone else who will use them to achieve something.

If you're THAT paranoid about people stealing from this sort of thing (joke's on them, they just took a ton of what is likely to be a cheap and abundant resource that to you should be able to easily replenish) then surround the thing in blocks and use signs to ensure that no one can even break in and access the minecart chests, let alone destroy them.

Also, I posted this in the "Everything Else" section for a specific reason. It's not really intended for the server but for MC gameplay in general. If it were server specific, I'd post it in a server specific section.

Lag can certainly be an issue so I am going to assume that people are smart enough to know what is and isn't reasonable with using this. I just posted the idea. If someone abuses it, the damage they do is their fault, not mine.