- Restoring with differential backups is easy. You need just use two tapes. First restore last full backup. Then restore last differential backup.

A differential backup doesn't reset archive attribute. The next time you perform a differential backup, it will again save all files that have changed since last full backup. So each night, differential backup will get progressively larger until next you perfrom a full backup.

If your company has a great amount of data that changes every day, it would be too time consuming to perform a differential backup every night. Instead, you might perform a full backup on Friday nights, and an "incremental" backup on other weekday night.

- An incremental backup saves only files that have changed since last full or incremental backup.

An incremental backup checks archive attribute to determine if file has changed and needs to be backed up. Then it resets archive attribute. An incremental backup stays small because it includes only files that have changed since last full or incremental backup.

- Restoring with incremental backups is more time consuming. First, restore last full backup. Then restore all incremental backups made since full backup, in order they were made. The only reason to use an incremental backup scheme is if differential backups become too large, requiring more than one tape.

Many company networks continue to opperate on Saturday and even Sunday. In this case, you would need to add required additional tapes to plan.

If during day your company creates a large volume of data, or a small amount of data that is too critical to wait for standard night time backup, you can perform a copy backup. To do this, you just copy selected files to a backup media.

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If you have too many passwords to keep track of then consider using a password manager program. There are a lot of them on market but be careful: some of them contain "adware" which will pop up ads every time you are online. Most of free password managers contain some degree of adware. Here's one that doesn't: http://www.roboform.com/

7. Never share your password with anyone else. If you have to, then change it immediately afterwards.

8. Avoid using "dictionary" words. There are password-cracking programs that will check every word in dictionary. If you want to use words then break them up with non-word characters. For example: BuIlT*99$APPlE is difficult for anything other than most sophisticated password-cracking program to guess because it is combined with non-alphabet characters and it is in mixed case.

9. Don't use "password" or "none" as your password! Don't even use "PaSsWoRd"!

10. If someone calls or sends you e-mail claiming that they are from your bank, or credit card company, or anywhere else that you have a password with, NEVER give them your password or PIN no matter what story they tell you. It's a scam. No one will ever ask for your password. Legitimate administrators of your password-protected accounts do not need your password to access your files during normal course of their business dealings with you.