Subject: Storage | September 10, 2015 - 03:30 PM | Jeremy Hellstrom
Tagged: usb 3.1, asus, BOT, UASP
[H]ard|OCP is taking a look at the new USB standard and how it functions on versions of Windows newer than Win7 which support the new transfer protocol. Gone are Bulk Only Transfers, modern OSes support USB Attached SCSI which offers much better transfer speeds. With a Rampage V Extreme USB 3.1 and a bundled PCIe 2.0 x2 USB 3.1 card (available with two USB 3.1 Type A or one of the new USB 3.1 Type C) they tested the difference in transfer speeds between BOT and UASP. Check out their results here.
"Recent changes to the USB spec claim to provide a brighter future for those dependent on USB storage. We have all heard about just how great USB has become, or should have become. We test some of these advances to see if the new USB can deliver the goods when it comes to moving data."
Here are some more Storage reviews from around the web:
- WD My Passport Ultra 2TB Portable 2.5-Inch Hard Drive Review @ Techgage
- Seagate Backup Plus Portable Drive 2TB USB 3.0 @ eTeknix
- SilverStone Teratrend TS432U 4 Bay 3.5" HDD Tower Enclosure Review @ NikKTech
- Synology DiskStation DS415play 4-bay NAS Review @ Techgage
- QNAP TVS-471-4G High Performance NAS with Intel Processor @ Bjorn3d
- QNAP TS-563 @ Legion Hardware
- PowerNAS Business Mini @ Kitguru
- VisionTek Go Drive SSD RAID 0 @ Bjorn3d
- OCZ Trion 100 480GB SSD Review @ NikKTech
- Intel SSD 750 Series Review @ Hardware Secrets
- Crucial BX100 250GB SSD Review @ Madshrimps
- ADATA Premier SP550 @ Benchmark Reviews
- Adata Premier SP550 @ The SSD Review
- Samsung SM863 & PM863 @ The SSD Review
Introduction, Specifications and Packaging
Today Samsung has lifted the review embargo on their new Portable SSD T1. This represents Samsung's first portable SSD, and aims to serve as another way to make their super speedy VNAND available. We first saw the Samsung T1 at CES, and I've been evaluating the performance if this little drive for the past week:
We'll dive more into the details as this review progresses.
The T1 comes well packaged, with a small instruction manual and a flat style short USB 3.0 cable. The drive itself is very light - ours weighed in right at 1 ounce.
Subject: Storage, Shows and Expos | January 5, 2015 - 05:00 PM | Allyn Malventano
Tagged: CES, usb 3.0, UASP, T1, SSD T1, ssd, Samsung, ces 2015
Today Samsung announced a new portable SSD - the SSD T1:
These are essentially 850 EVO's in very small portable packaging. They support USB 3.0 speeds as well as UASP, so random IO performance should be very respectable. We have not tested it ourselves, but something on the order of 8,000 4k random IOPS should be achievable.
Claimed speeds are up to 450 MB/sec, likely limited by the 5Gb/sec USB 3.0 interface being used. 256 bit hardware-based AES is also included, with the drive unlockable by the use of a small software app that is embedded on the drive. The included cable is impressively thin considering it is a full USB 3.0 spec cable. The release states the lowest capacity 250GB model will sell for $180. Based on other data we have, the 500GB and 1TB capacities should sell for ~$350 and $650, respectively. We will review the T1 just as soon as we get back from CES later this week.
Press blast after the break.
Follow all of our coverage of the show at http://pcper.com/ces!
Introduction and Internals
We've seen USB 3.0 in devices for a few years now, but it has only more recently started taking off since controllers, drivers, and Operating Systems have incorporated support for the USB Attached SCSI Protocol. UASP takes care of one of the big disadvantages seen when linking high speed storage devices. USB adds a relatively long and multi-step path for each and every transaction, and the initial spec did not allow for any sort of parallel queuing. The 'Bulk-Only Transport' method was actually carried forward all the way from USB 1.0, and it simply didn't scale well for very low latency devices. The end result was that a USB 3.0 connected SSD performed at a fraction of its capability. UASP fixes that by effectively layering the SCSI protocol over the USB 3.0 link. Perhaps its biggest contributor to the speed boost is SCSI's ability to queue commands. We saw big speed improvements with the Corsair Flash Voyager GTX and other newer UASP enabled flash drives, but it's time we look at some ways to link external SATA devices using this faster protocol. Our first piece will focus on a product from Inateck - their FE2005 2.5" SATA enclosure:
This is a very simple enclosure, with a sliding design and a flip open door at the front.
Introduction and Technical Specifications
Courtesy of Oyen Digital
Oyen Digital, a popular manufacturer of portable storage enclosures and devices, provided us with its MiniPro™ eSATA / USB 3.0 Portable Hard Drive enclosure for testing USB 3.0 enhanced mode on the ASUS P8Z77-I Deluxe motherboard. This enclosure offers support for USB 2.0, USB 3.0, and eSATA ports in conjunction with a 2.5" hard drive. We put this enclosure on the test bench with the ASUS P8Z77-I Deluxe board to test the performance limits of the device. The MiniPro™ enclosure can be found at your favorite e-tailer for $39.95.
The MiniPro™ SATA / USB 3.0 Portable Hard Drive enclosure is a simple aluminum enclosure supporting any 2.5" form factor hard drive up to SATA III speeds. The enclosure itself supports USB 2.0, USB 3.0, and eSATA connections. Because of its use of the ASMedia 1053e chipset for USB 3.0 support, the enclosure supports both USB 3.0 normal mode transfer speeds and UASP (USB Attached SCSI Protocol) mode transfer speeds. UASP mode is a method of bulk transfer for USB 3.0 connections that increases transfer speeds through the use of parallel simultaneous packet transfers. Per our sources at ASUS, UASP can be explained as follows:
The adoption of the SCSI Protocol in USB 3.0 provides its users with the advantage of having better data throughput than traditional BOT (Bulk-Only Transfer) protocol, all thanks to its streaming architecture as well as the improved queuing (NCQ support) and task management, which eliminated much of the round trip time between USB commands, so more commands can be sent simultaneously. Moreover, thanks to the multi-tasking aware architecture, the performance is further enhanced when multiple transfers occur.
The downside of UASP is that the receiving device (Flash drive/external hard drive etc) must also be UASP enabled for the protocol to work. This requires checking your peripherals before purchase. However since UASP is an industry standard, the device support for ASUS UASP implementation is not restricted to a particular controller manufacturer or device type, so the overall number of peripherals available should undoubtedly grow.
Technical Specifications (taken from the Oyen Digital website)
eSATA 6G (Up to 6.0 Gbps)
USB 3.0: (Up to 5.0 Gbps)
|SATA III (up to 15mm SATA 2.5" HDD/SSD)|
|Windows XP/Vista/7/8 & above; MAC OS 10.2 & above; Linux 2.4.22 & above|