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Samsung Portable SSD T5 revealed

dannys1 said:
Yeah I think so, the 4k video files are large single files which the Sandisk excels at. Its thousands of tiny files the T5 should be quicker with (and what i'll be benchmarking on it when it arrives)
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Many thanks, just ordered a new Sandisk. 🙂
 
MrX8503 said:
Any way to support TRIM on macOS or force trim on Windows?
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macOS at this point does not seem to be able to TRIM over USB. Windows can do it using the below command in Powershell (from Anandtech).

What is appears to be doing is sending a SCSI command which the UASP chip in some of these drives can run.

Use the PowerShell command Optimize-Volume -DriveLetter Z -ReTrim -Verbose (assuming that the drive connected to the storage bridge is mounted with the drive letter Z)
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I bought a 500GB T5 and am very happy with the performance. This is my first Samsung product; I'm using it as storage for my iTunes library. I will certainly buy a 1TB T5 as well; I'm very impressed with spot-on transfer rates and small form factor. Mine barely gets warm, even after sustained transfers. Nice product.
 
jmoore wrote:
"I bought a 500GB T5 and am very happy with the performance."

Could you tell us if TRIM is enabled?
You should be able to see this using the "System Information" app.

Another thing to try:
- Open Disk Utility
- "aim it" at the T5
- run the "repair disk" function
- expand the "disclosure arrow" and observe
- do you see a line that says "trimming unused blocks"?
 
TRIM Support shows here in Mac mini Fusion drive with macOS 10.12.6 (16G29) Sierra:

Apple - About This Mac - System Report - Hardware - SATA/SATA Express - APPLE SSD SM128E - TRIM Support - Yes
 
There's no indication in 10.12.6 that TRIM is enabled, either via Disk Utility or the Storage tab in System Report.
 
Just received a Samsung T5. MacOS recognized it immediately. I'm trying to use Carbon Copy Cloner to make a bootable disk. But CCC gives me errors:
  • You may have difficulty booting from this destination volume, the underlying disk is not partitioned with a partitioning scheme that Apple recommends for Intel Macs.
  • This destination cannot support a backup of your OS X system files.
  • "Samsung_T5" does not provide support for Access Control Lists. Access Control lists that are associated with files and folders on "Macintosh HD" will not be preserved.
  • "Samsung_T5" does not provide support for hard links. Hard links between files on "Macintosh HD" will not be preserved, each link referent will be copied as a standalone file.
  • "Samsung_T5" does not provide support for file and folder ownership. Any ownership settings that are associated with files and folder on "Macintosh HD" will not be preserved.
So even though it backed up the Macintosh HD (internal 500GB) on the late 2016 Touchbar 15" MBP, it doesn't give the option to boot from it. Also when I open Disk Utility "Partition" is grayed out for the Samsung.

I purchased the drive to clone and boot from the Samsung. Would anyone know how I fix the drive to make it happen? Thank you.
 
You need to use Disk Utility to reformat the T5 as "MacOS Extended (Journaled)" before running CCC to clone your system drive to it.
 
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RE Lisse's post 112 above:

matreya is correct.
The T5 drive probably comes out of the box in a non-Mac format.
ALSO -- the drive -may- have a proprietary, "unremovable" partition on it with specialized software (for encryption, etc.).
If this is the case, you may have trouble getting CCC to work with it (CCC wants an HFS+ drive, and it may not be able to deal with hidden partitions).

Try re-initializing the entire drive using Disk Utility to HFS+ with journaling enabled.
Does that work?
If so, try CCC again.
Any better?
If not, tell us about what happens next.
 
Not only do you need to format it correctly, you also need to change partition table to GUID in Disc utility. I'm not at my computer right now so I can't give clear instructions, but it should be under erase or partition as an option.

Edit: I assume it comes standard as MBR partition table, but it may already be GUID. Just check so you don't have to do everything all over again 🙂. The default file system from the factory is ExFAT if I recall correctly.
 
user1234 said:
Not only do you need to format it correctly, you also need to change partition table to GUID in Disc utility. I'm not at my computer right now so I can't give clear instructions, but it should be under erase or partition as an option.

Edit: I assume it comes standard as MBR partition table, but it may already be GUID. Just check so you don't have to do everything all over again 🙂. The default file system from the factory is ExFAT if I recall correctly.
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sounds right - unless you need a pc type format, reformat for mac. The security BS is not something most people need in an external. Ditch it and move on. It was a sales point item not needed by 99% of anyone with a scheme already in mind. Format to suit your platform and be done with it.
 
BEWARE encryption. If you absolutely need it, use it at your own risk, but be aware that if disk problems arise, it may be impossible to recover with utilities like DiskWarrior, etc. Encryption? No thanks! Not even for free!
 
ulfertg said:
Apparently Angelbirds SSD2GOPKT supports it: https://www.angelbird.com/prod/ssd2go-pkt-1031/?category=2
I have this drive
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Someone linked that earlier. That does not use the macOS TRIM command, but rather come proprietary utility they made. I suspect what they have done is made that utility send the SCSI UNMAP command to do the same thing as TRIM. So you get the same end result as TRIM, but not using the TRIM command.
 
Weaselboy wrote:
"That does not use the macOS TRIM command, but rather come proprietary utility they made. I suspect what they have done is made that utility send the SCSI UNMAP command to do the same thing as TRIM. So you get the same end result as TRIM, but not using the TRIM command."

Is there any way to send SCSI UNMAP via the terminal?
 
Fishrrman said:
Weaselboy wrote:
"That does not use the macOS TRIM command, but rather come proprietary utility they made. I suspect what they have done is made that utility send the SCSI UNMAP command to do the same thing as TRIM. So you get the same end result as TRIM, but not using the TRIM command."

Is there any way to send SCSI UNMAP via the terminal?
Click to expand...
Not in macOS unfortunately. Windows can do it with the Powershell command Optimize-Volume and appropriate switches.
 
Samsung T5 1 TB HFS+ Sierra, on 2017 iMac 27" i5 7600 with 1 TB SSD:

SamsungT5.jpg
 
imaginex20 said:
I have the T3, I get roughly 400 MB/s read and write. So not much of an upgrade?
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Well, I wouldn't upgrade from a T3 to a T5, but my benches are roughly 20-25% faster than yours. Not insignificant. So for me, the extra bit of money spent to get the T5 instead of the T3, and the extra included cable, makes it worth it. The case is all metal too.
 
imaginex20 said:
I have the T3, I get roughly 400 MB/s read and write. So not much of an upgrade?
Click to expand...

Probably not for you.

But remember... it's still an mSATA drive inside... with a SATA-to-USB controller and all of its overhead. There are limits and it looks like they're approaching them.

Also... larger capacities are usually faster due to an increased number of chips inside. What size do you have?

Notice the comment above... they're hitting 474MB/s and 505MB/s on a 1TB model.
 
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