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SSD's - Optimum Settings for a Mac

A

aaphid

Junior Member
I'm about to put an X25 into my Mac and want to make sure I've got everything setup correctly from the start. Suggestions I've read are as follows:-

1. check to make sure you don't have TRIM firmware installed on the SSD.
2. disable sudden motion sensor
3. enable don't sleep
4. no safe sleep
5. apply noatime
6. disable spotlight
7. don't defragment

Does that sound about right or are there other opinions? Even better is there a wiki or how to out there somewhere?

I'm not sure why someone suggested disable sleep. I don't think this takes too much disk activity.

And why would you disable spotlight? I know that it spends a fair amount of time accessing the drive to do indexing but it needs to do that to work properly doesn't it?
 
Why would you want a firmeware without TRIM support?

And why would you want to disable sleep? Sleep shouldn't affect the disk unless you're talking about hibernation/hybrid sleep.
 
Nothinman said:
Why would you want a firmeware without TRIM support?
Click to expand...
Because apparently running an SSD with TRIM enabled firmware on an OS that doesn't support it may actually slow the SSD down.

Nothinman said:
And why would you want to disable sleep? Sleep shouldn't affect the disk unless you're talking about hibernation/hybrid sleep.
Click to expand...

I agree. These are only some suggestions that I've read elsewhere, not my own recommendations. I'm really wanting to find out how others have setup their SSD's in a Mac to get the best performance possible.
 
Nothinman said:
Why would you want a firmeware without TRIM support?
Click to expand...

From this link
http://forums.macrumors.com/showthread.php?t=808178&page=10
about half way down the page it says

"In terms of performance, the pre TRIM Intel G2 drives have about 36MB/s for small file random writes both used and new. Once the TRIM firmware is installed, the drive assumes you are using TRIM which is not supported in OS X, so after moderate use your performance of small file size random writes will drop down from about 38MB/s new to around 17MB/s used. This is still much much faster than any HDD and most SSDs in fact, but obviously you want to get as much performance out of it as possible."

Another related question...
Does anyone know of a reliable speed tester for Macs similar to CrystalDiskMark for Windows?
 
aaphid said:
I'm about to put an X25 into my Mac and want to make sure I've got everything setup correctly from the start. Suggestions I've read are as follows:-

1. check to make sure you don't have TRIM firmware installed on the SSD.
2. disable sudden motion sensor
3. enable don't sleep
4. no safe sleep
5. apply noatime
6. disable spotlight
7. don't defragment

Does that sound about right or are there other opinions? Even better is there a wiki or how to out there somewhere?

I'm not sure why someone suggested disable sleep. I don't think this takes too much disk activity.

And why would you disable spotlight? I know that it spends a fair amount of time accessing the drive to do indexing but it needs to do that to work properly doesn't it?
Click to expand...

1: Mac OS X does not support TRIM.
2: The sudden motion head parking is initiated when the system is subject to sudden G accelerations. Don't think it should matter in normal usages.
3, 4: I see your point of disabling sleep (to prevent the system from writing to the sleep file all the time). I would rather investigate how to disable safe sleep only.

6: spotlight is fine.
7: there is no auto defragment on Mac OS X
 
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