Hi Carl, Thanks for the information about TRIM. I investigated a little and found a few reports that said TRIM was a good thing, but also at least one that said it might actually cause problems.
One person said that TRIM is SATA-only and if an SSD is attached via PCIe (or USB-3 or Firewire or Thunderbolt), then it cannot receive TRIM commands. That person also said that enabling TRIM (on some SSDs) could increase wear and tear by adding unnecessary writes. Clearly I am not highly technical in this area. My SSD (Crucial M4) is mounted on a PCIe card that supposedly provides SATA-III access. So, if this other person is correct, is my SSD considered to be SATA or PCIe? If you have other thoughts on this matter, I’d appreciate hearing them. In your opinion, is there any risk of making things worse by enabling TRIM with the Trim Enabler software? Thanks, Gregg On Jan 14, 2014, at 9:52 PM, Carl Hoefs <[email protected]> wrote: > In a nutshell, TRIM spatially distributes writes across an SSD's memory so no > particular spot of memory gets unduly utilized by writes and consequently > "dies" or becomes slow due to soft (correctable) errors, which indicates the > beginning of memory death. > > Apple enables TRIM for all of its own SSD drives. For 3rd-party drives, you > have to do it yourself. There are free apps like Trim Enabler that are very > easy to use. > > -Carl > > On Jan 14, 2014, at 7:43 PM, "Dinse, Gregg (NIH/NIEHS) [V]" > <[email protected]> wrote: > >> Thanks for the suggestion, though I don’t know what TRIM is or which disk >> utilization patterns would indicate that I should enable it. Can you >> provide any details? >> >> Thanks, >> >> Gregg >> >> On Jan 14, 2014, at 9:37 PM, Carl Hoefs <[email protected]> >> wrote: >> >>> On Jan 14, 2014, at 7:30 PM, "Dinse, Gregg (NIH/NIEHS) [V]" >>> <[email protected]> wrote: >>> >>>> And although the system does not feel slower with the SSD than with my old >>>> HDD, it also does not feel remarkably faster either, though I’m sure some >>>> things are at least somewhat faster. >>> >>> Depending on your disk utilisation patterns, you might want to enable TRIM >>> on the SSD. >>> >>> -Carl _______________________________________________ MacOSX-talk mailing list [email protected] http://www.omnigroup.com/mailman/listinfo/macosx-talk
