Mac
OS X is one of the most popular operating systems among tech people.
It is very demandable and trustworthy for its unique integrated
features and performance. One of the popular utility is 'Time
Machine'. It is a data back-up utility developed by Apple for the Mac
OS X. It was introduced with the release of Mac OS X 10.5.
The
need of backup was felt a long before the launch of Time Machine in
Mac. Mac users used to backup their data using CD/DVD or writing data
in some external drive. But, it was lengthy and expensive process.
The process was not widely accepted because whenever changes were
made in original data the respective changes were not updated in
respective backup.
Time
Machine creates incremental backups of files, which can be restored
at later date. So, if you delete any files mistakenly, you can
recover easily with time machine. It works with iLife, iWork and
several other compatible programs. Time Machine saves hourly
backups for the past 24 hours, daily backups for the past month, and
weekly backups for everything older than a month until the volume
runs out of space.
How
Time Machine works?
It
copies the files on your computer to a destination hard drive as a
back up to protect you in case of any disaster or data loss. It keeps
Incremental backup and works with Time Capsule.
What
is Time Capsule?
The
backup device used by time machine is called Time capsule. An
external drive is used for keeping Backup data in Mac OS X and it is
called Time capsule.
Incremental
backup- An incremental backup is a type
of backup that only copies files that have changed since the last
backup. It
saves time and money both. But, Mac user can face some limitations or
drawback of Time Machine .
Problems
related to Time Machine in Mountain Lion:-
1.
Backup is not bootable:-
Even though Time Machine backs up every file on your disk but if your
internal HD fails, you can't boot directly from your Time Machine
backups.
However,
if you're using Lion 10.7.2 or above, and backing-up to a
directly-connected external HD, there's probably a copy of your
Recovery HD on the Time Machine drive, so if your internal HD fails,
you can restore from that.
2.
It doesn't keep data forever
:- Time Machine doesn't keep its copies of changed/deleted items
forever, and you're usually not notified when it deletes them(hourly
backups combine and expire after a day).
3.
It doesn't give you much control:- You
can tell Time Machine to ignore particular files or folders by adding
them to its Do Not Back Up list, But, you can’t exclude files based
on certain criteria e.g all movie files over 2GB in size.
4.
Doesn't compress files:- It
doesn’t store duplicate copies of identical files, so it doesn’t
compress your files.
5.
Encryption:- By
physical access of your Time Machine backup disk anyone can read all
your files because It doesn't encrypt them.
6.
Not compatible with
FileVault:-
Time Machine backs up FileVault-encrypted user folders only after
logged out session—and does not permit file-by-file restoration of
your FileVault data using the Time Machine program.
7.
Doesn’t Use Optical Discs
:- Time Machine can store its data only on a hard disk, not on CDs or
DVDs
Keep backup with Stellar Drive
ToolBox:-
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