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Compressing slow drive
My largest drive is an external USB2 4Tb array. Both because of the USB2, and the fact that it's an array, it is my slowest storage, so it's used mostly as backup.
Now I have a fast quad-core system, I decided to compress this drive; I can afford the CPU for the decompression, and I'm reducing the poor I/O times in exchange for CPU which I have in abundance. In theory, the overall I/O should be faster.
Does this sound a good idea? Are there any pitfalls that I should be aware of?
The compression has been running for about four days so far, and is perhaps 33% complete. My system rarely reboots, but Windows Update might request a reboot.
What happens to the compression of the entire drive if it is interrupted part way through?