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jshbckr

macrumors 6502
Original poster
Apr 20, 2007
421
1
Minneapolis, MN
Or should I bump up to 7200RPM? I bought the data doubler kit. I have some older drives laying around. Pretty sure I have a 500GB 7200 somewhere. I'll be using a 90GB SSD + HDD. I don't really want to buy a whole new hard drive for it, but maybe it will come down to it.

Anyone using their mini as a media server have some advice?
 
There's more to drive performance than rotation speed. Some 5400 rpm drives are faster than some 7200 rpm drives, due to higher density. 5400 should be fine for streaming movies and music.
 
The 5400 rpm drive in my MacBook Pro 2009 only reaches 55 MB/s read/write, while newer drives can get up to 80 MB/s, so rpm is not everything.
 
You tend to find with media servers that its rarely the hard disc speed thats the issue, as the throughput needed for even a full HD movie is much less than the read/write speed of the drive its on. Issues are more likely to arise from network bandwidth.

my brand new Mac Mini arrived yesterday (with a 5400rpm drive) it performs no slower with media server type work than my old 2009 iMac with a 7200rpm drive.
 
is that really so ?

Average access time will be slower on the 5400rpm drive, because once the heads locate the right track it needs to wait for the sector to come on 'round, which is a longer wait when the platter spins more slowly.

So the net result is that 7200 rpm drives will usually perform better for non-sequential data transfers (i.e. small chunks of data scattered all over the drive), but they won't necessarily perform better for sequential transfers, which is a function of data density and rotation speed. A newer 5400 drive with very high data density will have more bits per second going under the head than a 7200 rpm drive with much lower data density.
 
The speed of my 2012 mini's HD tests nearly twice as fast as my 2010 mini's.


Mike
 
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Imho the downside of any spinning HD in a media server is that you either have the HDD spinning 24/7 (wear and power consumption) or have to wait for the media server until the HDD spun up from energy saving mode.

Personal perception of the "spin up waiting time" plays a big role here, though it's something to keep in mind.
 
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