Compressing drives and data
When you format a drive for NTFS, Windows Server 2012 R2 allows you to turn on the built-in compression feature. With compression, all files and directories stored on a drive are automatically compressed when they’re created. Because this compression is transparent to users, compressed data can be accessed just like regular data. The difference is that you can store more information on a compressed drive than you can on an uncompressed drive.
IMPORTANT File explorer shows the names of compressed resources in blue. It’s also important to point out that ReFS does not support NTFS compression.
REAL WORLD Although compression is certainly a useful feature when you want to save disk space, you can’t encrypt compressed data. Compression and encryption are mutually exclusive alternatives for NTFS volumes, which means you have the choice of using compression or using encryption. You can’t use both techniques. For more information on encryption, see “Encrypting drives and data” later in this chapter. If you try to compress encrypted data, Windows Server 2012 R2 automatically decrypts the data, and then compresses it. Likewise, if you try to encrypt compressed data, Windows Server 2012 R2 uncompresses the data, and then encrypts it.
- Expanding compressed drives
- Expanding compressed directories and files
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