Currently Being ModeratedJun 16, 2013 3:05 AM (in response to moritzhberg)
Did the testing on the Fusion Drive, adn it gave me a disappointing 100MB/s read and write. The write even went to 40MB/s at one point. I will be breaking it apart, and using a dual disk setup.
Currently Being ModeratedJun 16, 2013 3:22 AM (in response to moritzhberg)
My understanding on how the fusion drive system works is the os and software controlling the fusion drive desides what files go on what disk. To start fusion places most if not all os files on the ssd part of the fusion combo. It continues to place files on the ssd part until it is near full then puts files on the rotating part. It looks at how you use your computer and will move files to the ssd part if you use those files often. Those could be app files or documents and moves les used files from the ssd to the rotating drive.
Not sure how you are testing but I doubt that program you posted a screen shot of will work properly with the fusion setup. Only after a period of time will the system settle down, moving files around to a near final arrangement based on how you use those files, and maybe then the test might return better results. But then if you are manually copying files to any external drive that too will have an affect on the speed.
Currently Being ModeratedJun 16, 2013 1:00 PM (in response to LowLuster)
After noticing the speed hit with the Fusion drive, I broke apart the fusion drive, and installed OS X on the standalone SSD. I'm currently copying files to the HDD, so I can't enable Trim, as that requires a reboot. I did however run a speed test on the SSD, and got 100MB/s and lower. Did I mess up my SSD with 3 installs? When I enable Trim, will the speeds be back to what they were in the screenshot, which I posted above?
Thanks for your help!
Currently Being ModeratedJun 16, 2013 1:48 PM (in response to moritzhberg)
TRIM does nothing for speed of the ssd. That is not the function of the TRIM system.
Did you mess up the ssd with the multiple installs? No you didn't.
You might consider doing a secure erase of the ssd and then reinstalling os x on it. Use this to do the erasing.
This works even if you don't have a corsair ssd.
They both point to the same tool, parted magic.
But in the end stop running speed tests and start using your system.
Currently Being ModeratedAug 4, 2013 10:17 AM (in response to LowLuster)
Thanks for your info. After running the Fusion Drive flawlessly for about a month, I have noticed some slowdowns. After running a speedtest, I saw a shocking result of 100MB/s for read and write. Anyone know what happened? I broke apart the fusion drive, and ran a test on the pure SSD, and also got 100MB/s read/write.
I will be contacting Samsung, to see what they have to say, but I hope to hear back from you guys.
BTW, my Firmware version is DXM04B0Q if that helps.
Thanks everyone! Your help is greatly appreciated.