UASP makes TRIM support possible, but it still depends on support from all the controllers and bridge chips and the operating system. The big complication is that UASP enables USB drives to use the SCSI command set, but the controllers going into portable SSDs use the ATA command set. So the OS needs to support not just UASP but the SCSI UNMAP command (counterpart to ATA TRIM) and the USB-SATA bridge needs to be able to translate a SCSI UNMAP to ATA TRIM properly.
TRIM support won't make or break performance for a spacious drive like this that is intended for the lighter workload of a removable device, but we will try to confirm whether it works.
Here is a test for TRIM support on various devices. Basically most UASP -> SATA controllers do not support SCSI UNMAP -> TRIM translation. The lone exception are devices which use the JMicron JMS587 controller.
The ballpark estimate would be that it'll probably be close to Portable SSD T1 prices since the products sound pretty similar. I'm not going to bother speculating more precisely when I'll be meeting with Samsung later this week; we'll see if they have anything else to share.
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11 Comments
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Laxaa - Monday, January 4, 2016 - link
It's great that we're finally getting USB-C drives. I hope we'll see more this coming year, from high to low-end.dabotsonline - Monday, January 4, 2016 - link
It's a shame that the T3 is still only USB 3.1 Gen 1 (5Gbps):http://www.samsung.com/global/business/semiconduct...
Flunk - Monday, January 4, 2016 - link
Max transfer speed of 450MB/sec (as per your link) so 5Gbps (625MB/sec) should be more than sufficient.jasonelmore - Tuesday, January 5, 2016 - link
plenty fast for the sata controller it usesneo_1221 - Monday, January 4, 2016 - link
Just a note, since the article didn't specify - this is USB 3.0 (or USB 3.1 5Gbps, whichever you prefer).LarsBars - Monday, January 4, 2016 - link
Any word if USB 3.1 supports TRIM? Last I heard, USB didn't support trim which seemed like it could hinder portable drive performance.Billy Tallis - Monday, January 4, 2016 - link
UASP makes TRIM support possible, but it still depends on support from all the controllers and bridge chips and the operating system. The big complication is that UASP enables USB drives to use the SCSI command set, but the controllers going into portable SSDs use the ATA command set. So the OS needs to support not just UASP but the SCSI UNMAP command (counterpart to ATA TRIM) and the USB-SATA bridge needs to be able to translate a SCSI UNMAP to ATA TRIM properly.TRIM support won't make or break performance for a spacious drive like this that is intended for the lighter workload of a removable device, but we will try to confirm whether it works.
LocutusEstBorg - Sunday, March 20, 2016 - link
Here is a test for TRIM support on various devices. Basically most UASP -> SATA controllers do not support SCSI UNMAP -> TRIM translation. The lone exception are devices which use the JMicron JMS587 controller.https://translate.google.com/translate?hl=en&s...
JohnHardkiss - Monday, January 4, 2016 - link
So, uhm... Whats your ballpark estimate price for these units? Totally oblivious.Billy Tallis - Monday, January 4, 2016 - link
The ballpark estimate would be that it'll probably be close to Portable SSD T1 prices since the products sound pretty similar. I'm not going to bother speculating more precisely when I'll be meeting with Samsung later this week; we'll see if they have anything else to share.KoolAidMan1 - Monday, January 4, 2016 - link
Probably pretty close to the T1, so ~$900 looks like a safe bet for the 2TB version.I'll definately get the 1TB