Mac Hardware forum

Question

Why are my SATA Drives so slow on a macpro?

by ripupthehwy / February 26, 2013 1:54 AM PST

With my PC computer I'm getting 85-95 mb/s read & write speeds on internal SATA drives that are 80% full.
Working on a 2yr old MacPro Tower (12gb ram, Xeon 2.8 quad core) I am reading only 65-68 mb/s on drives less than 50% full. Same type of Seagate barracuda 2TB drives in each computer. Is there a setting or bottleneck issue? Also plugged in a Graid 4TB drive (Raid 0) using firewire ports and speed tests with it are only about 10mb/s faster.

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All Answers

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Answer
Does look a little on the pokey side.
by R. Proffitt Forum moderator / February 26, 2013 2:15 AM PST

But there are many reasons for this. From folk that install an antivirus on their Apple Mac OS X to a bum cable, drive or board.

The firewire port speed test should be almost ignored as the firewire speed even if it was 800 would only get you 80'ish megabytes per second with everything working in top form.
Bob

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no anti virus or cable
by ripupthehwy / February 26, 2013 2:30 AM PST

The SATA drives are plugged directly into the motherboard without cables and there's no antivirus software. Yeah I believe you're right about firewire not being any faster. I've got to get an adapter so I can plug the Graid via eSATA and test that but the internal SATA drives have got me stumped.

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About the Mac Pro tower.
by R. Proffitt Forum moderator / February 26, 2013 2:34 AM PST
In reply to: no anti virus or cable
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