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+--- Thread: Think carefully before installing Yosemite on a 3rd party SSD!! (/showthread.php?tid=172379)
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - davemchine - 10-19-2014
I bought the MiniPro Thunderbolt SSD to boot my iMac, http://www.amazon.com/gp/product/B00IFDLYO0/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 . So far it has worked well. After reading this thread I checked the System Information and I see TRIM is not enable. Is that an issue that I need to address?
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - sekker - 10-19-2014
Black wrote:
[quote=sekker]
OWC has some real-world data showing no significant speed reduction in their SSDs over a 3 year time-period.
But that data is a little old.
I'd like to see some recent data comparing these firmware and TRIM solutions.
TRIM happens in addition to firmware-based garbage collection-- it's not an either-or. If you don't understand how TRIM complements garbage collection, I'm guessing you may want to bone up on what the terms mean exactly. I'm not seeing why you would not want to have something enabled that can extend the life of your drive.
I believe all of you that say TRIM should be the better way to go. Apple has TRIM support for its SSDs.
I'd just like to see some real-world tests that support the supposition. Sometimes, there are other bottlenecks that end up being far more important.
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - Black - 10-19-2014
davemchine wrote:
I bought the MiniPro Thunderbolt SSD to boot my iMac, http://www.amazon.com/gp/product/B00IFDLYO0/ref=oh_aui_search_detailpage?ie=UTF8&psc=1 . So far it has worked well. After reading this thread I checked the System Information and I see TRIM is not enable. Is that an issue that I need to address?
You don't have to but you can.
http://www.cindori.org/software/trimenabler/
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - Chakravartin - 10-19-2014
sekker wrote:
[quote=Black]
[quote=sekker]
OWC has some real-world data showing no significant speed reduction in their SSDs over a 3 year time-period.
But that data is a little old.
I'd like to see some recent data comparing these firmware and TRIM solutions.
TRIM happens in addition to firmware-based garbage collection-- it's not an either-or. If you don't understand how TRIM complements garbage collection, I'm guessing you may want to bone up on what the terms mean exactly. I'm not seeing why you would not want to have something enabled that can extend the life of your drive.
I believe all of you that say TRIM should be the better way to go. Apple has TRIM support for its SSDs.
I'd just like to see some real-world tests that support the supposition. Sometimes, there are other bottlenecks that end up being far more important.
It's not just "bottlenecks" at issue. TRIM can certainly speed up access to your SSD by reducing overhead from unnecessary garbage collection and wear-leveling, but it also extends the life of an SSD.
Flash memory has a limited capacity for write-operations. Write-amplification from garbage-collection without TRIM will shorten the lifespan of your SSD.
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - davemchine - 10-19-2014
I installed the TRIM software linked above. Write speeds dropped slightly and read speed stayed the same.
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - GeneL - 10-19-2014
davemchine wrote:
I installed the TRIM software linked above. Write speeds dropped slightly and read speed stayed the same.
From this result, I'm wondering if I might be OK to pass on Trim for the Crucial SSD that I purchased recently?
I still haven't figured out which version I should use. There seems to be so many different ways to go and I don't have the know how to judge.
What's the best/easiest choice?
Inquiring minds want to know!
Thanks for guidance...
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - Fritz - 10-19-2014
trim had a very different meaning when i was youngish.
thanks, i guess i missed this completely. good to know
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - yeoman - 10-19-2014
FYI, yesterday new release with Yosemite compatibility:
http://www.macupdate.com/app/mac/37852/trim-enabler
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - Chakravartin - 10-19-2014
yeoman wrote:
FYI, yesterday new release with Yosemite compatibility:
http://www.macupdate.com/app/mac/37852/trim-enabler
Nononononononono.
That's the hack that I mentioned in the OP.
If you do that, it'll work for awhile and then one day you'll zap PRAM or let the battery run down on your laptop and your Mac will be unbootable.
http://www.cindori.org/trim-enabler-and-yosemite/
Important issues
The kext-signing setting is stored in your Mac’s NVRAM/PRAM, a sort of flash memory inside your Mac. This memory can be reset either by accident or by intention (usually by troubleshooting issues with your hardware), causing kext-signing setting to re-activate.
If you try to boot a Trim-enabled system with the kext-signing setting re-activated, you will be met by a gray screen with a stop sign:
This is your system telling you that a driver has been modified, and is not allowed to load.
Re: Think carefully before installing Yosemite on a 3rd party SSD!! - OWC Larry - 10-19-2014
It's frustrating to need any hack to use a drive... the TRIM hack makes the OS see a non-Apple drive like it's an Apple drive and enable TRIM as an Apple SSD. Everytime a new OS update comes out - this breaks the hack and have to redo. Regardless -
no - our drives do not need TRIM to operate optimally
http://blog.macsales.com/21641-with-an-owc-ssd-theres-no-need-for-trim
Under extreme corner case benchmark testing, yes - there are circumstances where even our drives can be shown to relatively momentary benefit from OS side trim - but they aren't real world/real app. Sandforce/LSI does a great job without needing TRIM. And about benchmarks - real world duty testing has shown that our drive design also gives consistently strong performance... we lose at peaks - but those are 'bathtub peaks' vs. a consistent performance above those outside of the peak ends.
I won't lie - it's frustrating to have had to endure the delays for being able to commercially provide the next generation Sandforce processor based solutions. They will be another leap... but that said, the current drives actually are already faster for many of the critical functions than the OS/systems they go into can benefit from. We want peaks too though - the pretty benchmark numbers that are easiest to show off and explain.
There is a reason though why our Extreme Pros are great for Black Magic cameras, for example, and most of the other drives simply can't provide the data throughput consistency required. Our drives we've been building for Mac first since day one and it is a true benefit that no TRIM hack is needed to get the most from them in your Mac.