Mac OS X Lion Adds TRIM Support for SSD's

iPhone1 · Feb 25, 2011

TRIM Support : YES!!!!!!!

ct2k7 · Feb 25, 2011

Confirmed on MBA (Late 2010)! (x 100)

Hellhammer · Feb 25, 2011

This is good news.

LoganT · Feb 25, 2011

So what is TRIM support and why is it a good thing to have?

saving107 · Feb 25, 2011

LoganT said:
So what is TRIM support and why is it a good thing to have?

Whats the big deal with TRIM support? To put it simply, operating systems like Snow Leopard that dont have TRIM support will treat solid state drives as regular, spinning drives when writing and deleting blocks of data. Snow Leopard doesnt exactly know its dealing with an SSD, and while youll notice incredible performance improvements in daily usage, the same performances will slowly degrade over time without TRIM support. TRIM correctly tells the operating system which blocks of data are no longer in use in the solid state unit, and the OS passes the information along to the SSD controller so it can wipe blocks internally.

Basically: this is great news for SSD aficionados and, looking forward, a smart move from Apple as the move to solid state drives in all Mac computers seems inevitable.

http://www.macstories.net/news/os-x-lion-adds-trim-support-for-ssds/

Stratus Fear · Feb 25, 2011

Apparently not all SSDs. At least my OCZ Vertex 2 doesn't appear to have it enabled in Lion, although it works fine in Windows.

LoganT · Feb 25, 2011

I've also heard that TRIM is good for cheaper quality SSD drives.

iPhone1 · Feb 25, 2011

Stratus Fear said:
Apparently not all SSDs. At least my OCZ Vertex 2 doesn't appear to have it enabled in Lion, although it works fine in Windows.

That would suck if Apple made Lion to support TRIM only on Apple branded SSD's. Let's hope this is not the case.

Stratus Fear · Feb 25, 2011

iPhone1 said:
That would suck if Apple made Lion to support TRIM only on Apple branded SSD's. Let's hope this is not the case.

Well if that ends up being the case, I'm sure some smart people will find a way to make it work

mrblack927 · Feb 25, 2011

Stratus Fear said:
Apparently not all SSDs. At least my OCZ Vertex 2 doesn't appear to have it enabled in Lion, although it works fine in Windows.

Indeed. My Intel X25-M G2 SSD is not supported either.

axu539 · Feb 25, 2011

mrblack927 said:
Indeed. My Intel X25-M G2 SSD is not supported either.

Hmm this is very bad news. I wonder if I should order an Apple SSD with the new MBP then, and just sell my own G2. Anyone have any thoughts?

Hellhammer · Feb 25, 2011

axu539 said:
Hmm this is very bad news. I wonder if I should order an Apple SSD with the new MBP then, and just sell my own G2. Anyone have any thoughts?

That is the first beta of Lion. TRIM support may still be taking its baby steps so don't make decisions based on what Lion currently supports.

ufkdo · Feb 25, 2011

It was one of the good news I was waiting for.

axu539 · Feb 25, 2011

Hellhammer said:
That is the first beta of Lion. TRIM support may still be taking its baby steps so don't make decisions based on what Lion currently supports.

Definitely definitely. However, I will cancel my order for now, since I should probably wait on some reviews anyway. I'd also like to see what SSDs they're actually using this time around.

Hellhammer · Feb 25, 2011

axu539 said:
Definitely definitely. However, I will cancel my order for now, since I should probably wait on some reviews anyway. I'd also like to see what SSDs they're actually using this time around.

That is always a good choice. Anand is already working on review and IMO AT's reviews are one of the best in the Internet.

57004 · Feb 25, 2011

What I said before: Knowing that it's a shame though that Apple didn't pick TRIM-capable SSD's for the current generation MacBook Airs. There's 2 suppliers in there currently, Toshiba and Samsung but neither support TRIM, according to the System Profiler

Sorry, I stand corrected

Hellhammer · Feb 25, 2011

GekkePrutser said:
Knowing that it's a shame though that Apple didn't pick TRIM-capable SSD's for the current generation MacBook Airs. There's 2 suppliers in there currently, Toshiba and Samsung but neither support TRIM, according to the System Profiler

It shows no TRIM support because OS X does not support it. See above, Intel X-25M supports TRIM but in OS X the TRIM support is stated as no. The second post also says that TRIM support has been confirmed with 2010 MBAs.

luggles · Jul 21, 2011

Any new information on whether the final release of Lion, allows for Trim support on non-apple branded SSDs?

I'm holding off purchase on a Intel 320 because it doesn't have garbage collection, and unsure about TRIM enabler.

Cougarcat · Jul 21, 2011

It doesn't.

rmwebs · Jul 21, 2011

Confirmed, trim not working at all on my OCZ-Vertex2

I guess this is another one of those moments where Apple are being *******s, forcing people to buy majorly overpriced SSD's from them. Hopefully someone can come up with a way to enable this.

EDIT: Just found this

http://www.machrome.com/2011-07/enable-trim-support-for-third-party-ssd-on-lion.mac

Mac OS X Lion Adds TRIM Support for SSD's

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