Enable TRIM on Samsung SSD 840, is it necessary?

This type of question has been asked a lot of times, I know, but I would like to receive some advice from experts.
Few weeks ago I installed my Samsung SSD 840. People say that it's not necessary to enable TRIM for such type of SSD. Others say that it allows to maintain the life of the SSD. So, what do you think about? What way to follow?
Note that in this case TRIM would be enabled by third part apps (TRIM enabler or Chameleon) and not by Apple.
Thank you in adavnce.

TRIM does not improve performance. Do a google search for TRIM and read up on it. Is it necessary and a good thing to have enbled? I say yes it is even if the drive does some garbage collection. If TIRM was not needed or not good for the drive apple would not auto enable it on ssd's that are branded by apple. Neither would windows 7 auto enable trim when windows sees a ssd installed.
mac_giabber wrote:
Kappy,
Thank you for yur reply.
If I enable the TRIM, what about the performance? Will it improve or not? IMHO, this would put an overhead on the SSD. What do you think about?
Thank you again.

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Does anybody have experiences with a Samsung SSD 840 Evo for a MacBook Pro?

I heard that the Samsung SSDs 840 Basic and Pro have problems with MacBook Pros and die after a few weeks. I bought my MacBook Pro 13 in April 2011 and want to upgrade it with a SSD now.

Partitioning makes no sense. You have a drawer full of stuff. Split it into two smaller drawers and you have two smaller drawers full of stuff.
Decide what you can store on external storage - your iPhoto/Aperture/Lightroom libraries can all be stored on externals, as can your iTunes Libraries and so on. Do you need to carry 30 gigs of movies with you all the time? You can get portable drives the size of an iPhone these days.

MacBook hard drive is full again. Replaced original hard drive with a Samsung SSD 840 Pro Series 256GB hard drive about 18 mo. ago, but my MacBook is now already saying that my hard drive is full again. 13in. Alum. Late 2008 MacBook

My MacBook hard drive is full again. I have a 13in. Aluminum, Late 2008 MacBook, and about 18 months ago (in October 2013), I replaced the original hard drive with a Samsung SSD 840 Pro Series 256GB hard drive. However, my MacBook is now already saying that my hard drive is full again. When I check "System Information," under "Storage," it states the following: Audio 52.02 GB; Movies 33.68GB; Photos 43.13GB; Apps 14.76 GB; Backups 174.4 MB; and Other 96.39GB.
Also, at home, I have an Apple Time Capsule 4th Generation 2TB that I use as my wireless router, and I also use it for automatic backup via Time Machine. And when I first purchased Time Capsule, the first time I connected Time Capsule, Time Machine asked if I would like to use it to back up my files, and I clicked, "Use as Backup Disk." And that's really all I've ever done with Time Capsule.
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Does anyone have any suggestions? Obviously the Audio, Movies, Photos, and Apps are taking up a lot of space... Any suggestions re: what I can do with Audio, Movies, Photos, and Apps? And what about the Other? Other is taking up 96.39 GB. What is Other, and what can I do about it?
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13in. Aluminum, Late 2008 MacBook, 250 GB (with upgraded Samsung SSD 840 Pro Series 256GB hard drive)
Processor 2.4 GHz Intel Core 2 Duo
Memory 2 GB 1067 MHz DDR3
OS X 10.9.5
plus
Apple Time Capsule 4th Generation 2TB
LaCie Porsche Design P'9223 1TB external hard drive
Thank you for your help.

Partitioning makes no sense. You have a drawer full of stuff. Split it into two smaller drawers and you have two smaller drawers full of stuff.
Decide what you can store on external storage - your iPhoto/Aperture/Lightroom libraries can all be stored on externals, as can your iTunes Libraries and so on. Do you need to carry 30 gigs of movies with you all the time? You can get portable drives the size of an iPhone these days.

Dell PERC H710P and Samsung SSD 840 Pro RAID performance

Hi. I have some questions about Dell PERC H710P.
I have a Dell PERC H710P RAID controller and 8 Samsung SSD 840 Pros.
I created virtual drive on 8x256GB Samsung SSD 840 Pro in RAID10.
And tried DD test (bs=512kb, count=20000) in CentOS 6.3.
But I had just around 370MB/sec.
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Thanks.

ive also had trouble with the Samsung 840 pro (256 GB) and my Dell Perc card. i have the smaller one the H310 though.
sent the drive back to samsung (their tech sup is horrid) and got it back. still an issue.
i think that it just a Dell mobo issue. we are waiting on ours to be replaced.

Samsung SSD 840 EVO not detected in MacBook Pro 2012.

Hello,
In January I had a problem with my computer where it would overheat, the battery would die quickly, and the overall computer speed was slower than a turtle for even the most basic functions. I brought my computer to a MacMan retailer and they fixed the issue. I then got my MBP back and it worked fine for about a month. It then repeated the same symptoms it had before I got it fixed. I talked to my roommate and did some research and ended up purchasing the Samsung SSD 840 EVO 250gb to replace my Hard Drive.
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I have tried a number of fixes I thought would surely work. I reformatted the SSD to the appropriate Mac format that every forum and website recommend: Mac OS Extended (Journaled) and that does not work. I have reinstalled OS X Yosemite, I have tried updating the SSD Firmware through USB. Nothing has worked yet. I have tried using Apple's internet recovery system and neither drive is recognized when inside the computer. My best assumption but least favorable is the Cable within the MacBook Pro that connects to the Hard Drive/SSD is faulty. I fear that it may be faulty since now neither the SSD or Hard Drive is detected when they are installed in the MacBook Pro, only when external.
Can anyone please help me figure out what could be wrong? If you need more information just ask and I will do my best to answer them to your satisfaction. Anyone input, conclusion, or direction would be greatly appreciated!
Thank You for your time and knowledge!

You have already defined the probable cause, the internal SATA cable. For verification, take the MBP to an Apple store genius bar for a FREE evaluation. It is not an expensive repair, even if done by Apple.
Ciao.

Block level backup engine Samsung SSD 840 EVO partition labeled "data"

Replaced the hard drive in my Dell 1545 laptop with a Samsung SSD 840 EVO.
Everything beautiful.
Am running Windows 8.1 - again everything beautiful.
Thought I would run "System Image Backup" (off the File History page).
failed - Microsoft error code 0x80780119
because Samsung Migration tool created a first partition labeled "data"
(don't know whose data this might be suspect it has nothing to do with the OS but is required for the SSD, perhaps for MBR boot purposed.)
This "data" partition is very small and 99% full: no room for the VSS backup requires.
Bypassed that problem with:
PS C:\> wbAdmin start backup -backupTarget:H: -include:C:\
which runs perfectly, except for the warning,
" Note: the list of volumes included for backup does not include all the volumes that contain operating system components. This backup cannot be used to perform a system recovery. However. you can recover other items if the destination media type Supports
it."

Hi,
Glad to hear that you've found a workground to backup the data and thanks for sharing the experience here. Regarding to the Samsung "data" partition, yes, as you mentioned, it is related with Samsung Migration software, so I think members working
on Samsung will be familiar with this partition.
http://www.samsung.com/in/support/category/storage/solidstatedrive/
NOTE
This response contains a reference to a third party World Wide Web site.
Microsoft is providing this information as a convenience to you. Microsoft does not control
these sites and has not tested any software or information found on these sites.
Yolanda Zhu
TechNet Community Support

T500 and Samsung SSD 840 ATA Password: ERROR 0200

Hi,
I upgraded my T500 with a Samsung SSD 840. Works great until I set a harddisk password. My password is accepted but this I get an error message from bios:
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Pressing ESC clears this error and boot continues. Any idea how to fix this? Bios is already upgraded to the latest version, the ssd firmware too.

I the bios order makes no difference. I went from a working password protected Intel X25-M (120gb) that worked with password to a Samsung 840 Pro that didn't. The same setup, just different drive in my x200s before starting to experiment. I think there is an interaction in the x200/t400 generation bios and the Samsung 840 pro's firmware that requires Lenovo to fix. The Samsung will work with disk bios password in a X60s but not X61, which is consistent with the problems also in the T61's.
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Enable Trim Command for SSD

How can I enable Trim Command for SSD in my Windows 7 O/S?

Unfortunately, using "fsutil behavior set disabledeletenotify 0" will not tell you if TRIM is actually working.
How do you know it is not already working?
You can try using this tool to check
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Copy the exe you download to a folder on the drive you wish to test (eg c:\test) and double click it. Follow the instructions.

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there sre omly sata vonnevtors, there never is a change, just the supported features and of course backward compatible.
So yes they are fine.
https://discussions.apple.com/thread/4550651?tstart=0

Enable TRIM on SSD Mac OS X Mountain Lion

I recently purchased and installed a Samsung SSD 840 Pro series on my MacBook Pro. I was reading up on SSDs and I heard something about enabling TRIM and how it makes the SSD last longer. How can I enable TRIM on my SSD on my MacBook Pro that's running Mac OS X Mountain Lion?

TRIM is necessary as SSD have limited writes, so the new written data has to go to a less frequently used spot on the SSD.
It's a real shame Apple doesn't automatically enable TRIM on non-Apple SSD's, it knows when it formats it that it's one as it won't enable scrubbing.
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Secure erase data on a Solid State Drive?

[solved] enable trim on ssd

this link from the wiki says i should edit my /etc/fstab in order to enable trim on my ssd.
this is my /etc/fstab
# /etc/fstab: static file system information
# <file system> <dir> <type> <options> <dump> <pass>
# UUID=6b44daaa-610c-4f23-a632-569d091e4d43
/dev/sda1 / ext4 rw,relatime,data=ordered 0 1
should i replace 'rw,relatime,data=ordered' with 'defaults,noatime,discard' or appent 'discard' to the options?
Last edited by aldoiljazi (2013-09-18 19:42:05)

@ploub, thanks!
another thing i want to make sure is trim support for my ssd. i have this one. the 64gb version.
i don't seem to find a certain source online, even the sandisk's page doesn't mention anything.
is there a test i can run?
edit: it does support trim, just for reference i used "hdparm -I /dev/yourssd" as root and i got:
Data Set Management TRIM supported (limit 8 blocks)
somewhere in the output.
Last edited by aldoiljazi (2013-09-18 19:41:42)

Mac Pro slow write speed on Samsung SSD drive

Hi,
I am wondering why I get very slow write speeds on my Samsung SSD 840 Series 250 GB system startup drive in my Mac Pro (early 2008).
I get an average write speed of approx. 35 MB/s and not much more for top speed. I tested it by transfering a large file (8GB, .m4v) from my Mac Pro internal Raid 0 (4x 2TB Stripe Set) delivering up to 550 MB/s. The read speed of the SSD is around 270 MB/s which I consider to be OK for that I have just the 3 Gb/s internal SATA interfaces in my pretty outdated Mac Pro.
I don't see any Memory or CPU overruns or consuming system tasks while doing the tests and no other user programs except Activity Monitor is running. The following screen shots from the Activity Monitor should proove my findings:
Setup:
Samsung SSD 840 Series 250 GB (SATA 6Gb/s and 3Gb/s compatible) system startup drive. Free Space left on SSD is around 100GB of 250GB.
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Samsung sais there should be 540 MB/s for Seq. Read and 250 MB/s for Seq. Write for their SSD drive.
Any hints what could be done to increase especially that low write speed of around 35 MB/s (average) on the SSD in my Mac Pro?

Really great 'The hatter' !!!
Thanks a lot for your exceptional support.
Next to my 4x discs in the 4 SATA II drive bays I have installed a additional OWC drive kit that allows me to have another 2 disks sitting in the empty bay below the CD/DVD drive and those are connected to the motherboard. So there is a lot to handle for that controller you mentionned ;-)
I will follow your guidance and boot from my 'maintenance' system on direct attached external drive, install the TRIM Enabler there as well and do the DU repair run. I always have a separate system available that gives me the chance to boot my Mac from there. And in addition I regularly use ONYX to keep my OS X clean and do the maintenance.
Anyway, you're the man of the day!
PS; I am looking forward to finally receive my new Mac Pro (late 2013) ordered on the 18th of December one of these days and then I hope that I can fly ;-)

Samsung ssd for macbook pro

Hello All,
I am trying to use the Samsung SSD 840 250 GB for my macbook pro, 2011 mid year model. Initially I used superduper for cloning, everything went smooth but then my SSD crashed, mac will not recognize it. I got a replacement disk, used superduper same thing happened, it crashed. Yesterday I used carbon copy cloner, everything worked fine, but then it crashed again. When I put the SSD to the USB, mac recognizes it, but when I install it in hard drive bin, it does not recognize it. Disk utility says that disk is verified and working fine.
I failed to understand why it is happening, I did not update the firmware or the TRIM.
Any suggestion and help.
I called samsung and they did not had any answer.
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Ah the basic. That's odd as I've never heard of any issues with one in a mac.
It could be that your Sata cable is bad, as many users have issues with them. They seem fairly weak and unless really careful when installing they can get damaged. This may be worth replacing for the relatively low cost to rule out.
The samsung drives (840 and pro) are proven to work reliably in macs, mine is also a 2011 model and I have no issues.
The steps you could take are as follows.
Clean install on the SSD. As you have a clone of your original I would try this first. Just to rule out and issues with th cloned install.
If still the same I would replace the Sata cable, taking great care when replacing it.
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I advise to run Trim, but not running it wouldn't cause these issues.

Enable TRIM on Samsung SSD 840, is it necessary?

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