that's surprising. this review seems pretty good...
http://macperformanceguide.com/Reviews-OWC-EliteProDual-TB-USB3-Thunderbolt-vs-USB3.html
http://macperformanceguide.com/Reviews-OWC-EliteProDual-TB-USB3-Thunderbolt-vs-USB3.html
I got the same results with empty drives, then the throughput fell slightly (as can be expected) after I added data. However there was just something about that drive setup that I didn't like (the fan for one thing, and having to open the case to change drives). So I ordered a CalDigit 3TB T3 and it arrived today. So far I am extremely impressed with the overall feeling of quality. I got about 460MB/s when empty (RAID 0, 3 drives), but I have not tested it since. It uses software RAID (the OWC to its credit did have hardware RAID) and comes pre-configured for RAID 0 using all 3 drives.that's surprising. this review seems pretty good...
http://macperformanceguide.com/Reviews-OWC-EliteProDual-TB-USB3-Thunderbolt-vs-USB3.html
that's surprising. this review seems pretty good...
http://macperformanceguide.com/Reviews-OWC-EliteProDual-TB-USB3-Thunderbolt-vs-USB3.html
I got the same results with empty drives, then the throughput fell slightly (as can be expected) after I added data. However there was just something about that drive setup that I didn't like (the fan for one thing, and having to open the case to change drives). So I ordered a CalDigit 3TB T3 and it arrived today. So far I am extremely impressed with the overall feeling of quality. I got about 460MB/s when empty (RAID 0, 3 drives), but I have not tested it since. It uses software RAID (the OWC to its credit did have hardware RAID) and comes pre-configured for RAID 0 using all 3 drives.
The more I see these case results I conclude that the BM Multidock was an excellent purchase for my needs (JBOD only). 4 bays, silent, one IEC power cord. 392MB/s read and 350MB/s on 512G 840 Pro SSD. Not as fast as it could be but fast enough and on par with many other TB cases... Not cheap though...
http://www.gearspace.com/board/music-computers/901031-blackmagic-multidock-first-impressions.html
curious on the OWC TBIV numbers, but i'm betting they won't be overwhelming.
http://macperformanceguide.com/Reviews-OWC-Thunderbay.html
RAID 0 X 4: 720 / 753 write/read MB/sec
RAID 0 X 3: 553 / 564 write/read MB/sec
RAID 0 X 2: 368 / 375 write/read MB/sec
Single HDD: 185 / 185 write/read MB/sec
You may be correct (though I got close to 800MB/sec with my USB 3 RAID posted above), however I suspect that with the relatively inexpensive OWC TB enclosure (as compared to, say, the Promise R4), that's about all we're going to get until the price to top-performing TB chipsets comes down. Either that, or due to inefficiencies in the TB protocol we just can't expect more.My guess is that 4 SSDs in a RAID0 will be limited to the 700s, but I would love to see real data and be proven wrong.
You may be correct (though I got close to 800MB/sec with my USB 3 RAID posted above), however I suspect that with the relatively inexpensive OWC TB enclosure (as compared to, say, the Promise R4), that's about all we're going to get until the price to top-performing TB chipsets comes down. Either that, or due to inefficiencies in the TB protocol we just can't expect more.
Has anyone confirmed any real-life TB-based RAID getting over 1000MB/sec? I'm curious.
Not that I'm complaining. Personally, I think having a device capable of over 700MB/sec, on a consumer-grade machine like my iMac, is pretty amazing. Though it was still $620 for 500GB. ($180x2 for the SSDs and $260 for the case). An interesting experiment but still not practical enough for most people.
No, I was talking about the OWC ThunderBay. I was agreeing with you that likely it's not going to give you much more than 700MB/sec, even with 4 SSDs. I'd be thrilled if it did, but given it's (relatively) inexpensive cost, I suspect it won't.i know you're talking about the akitio; i was speaking of the stats on the thunderbay -- i'm skeptical of those until i see it tested with 2 and 4 SSDs, based on the lackluster performance with the mercury elite pro dual 2-drive enclosure.
the sonnet delivers notably faster performance with 2 SSDs in RAID0 vs the pegasus2 r4, and way, way faster than the OWC mercury elite pro dual.
i'd love for the thunderbolt to be a good performer but have a suspicion that it won't be all that is promised.
could be just fine for HDDs (as the elite pro dual is) but less so for SSDs. if someone is going to pay for SSDs in a 2- or 4-drive RAID, they should get the best performance.
OWC doesn't disclose that the elite pro dual is effectively limited in performance. if a 2-drive SSD can't even get 50% of the speed it should then there is a problem.
My Akitio 2.5" dual drive Thunderbolt enclosure was delivered today.
I installed my two 250GB Samsung 840 EVO drives in to the enclosure (pulled them out of the OWC Mercury mini USB 3.0 cases). The Akitio drive case came with an approximately 18" Thunderbolt cable.
...
So far, I give it two thumbs up.
Is this the "Cactus" unit from MonoPrice, or the "Neutrino Thunder Duo" from Akitio or Amazon? Is there a difference (different part numbers)?
The specs also indicate that it can be "bus powered". Did you try comparing transfer speeds when bus-powered vs. AC powered?
Thanks for your review ... this is a very interesting enclosure to me.
I wonder if it will boot Windows on one drive ... I would like a small enclosure to put a small Windows boot SSD along with a larger Windows data hard disk. I have tried the LaCie "Little Big Disk" which works nicely under OS X, but it won't boot Windows (although with their new driver it should work as a Windows data drive, even in RAID-0 with Windows raid driver).
-howard
You're correct in that this is the Akitio Neutrino Thunder Duo. It's the same as the Cactus Ridge (or whatever) from Monoprice. I bought from Monoprice. The box is came in was a white, unlabeled box but all documentation states Akitio Neutrino Duo.
Have not tried bus powering it, though I'm not sure it'll power two 250GB 840 EVOs without the AC adapter.
The unit is just a JBOD controller, so any RAID is done via software. I can partition any way supported by Apple's software.
Not sure if it'll boot Windows. I'm not able to test is because a) the array has data on it that I don't want to wipe and b) I don't have a copy of Windows I can easily use (my one copy is activated/registered to my Parallels installation).
If it's JBoD, why not using this:
http://www.datoptic.com/ec/thunderbolt-jbod-5x-sataiii-enclosure-for-mac-windows.html
Hot swap drive any time you ever need, why bother with trays - it's too 1990's
Well, I finally got around to setting up my OWC ThunderBay IV this evening. Currently have 3 drives in it. A 512GB Crucial M4 drive, and 2 4TB and 2TB WD Black drives. I'll buy a fourth 4TB HDD for an internal Time Machine backup later this week.
Since I'm coming from a MP 3,1 with its SATA II limitation, I expected to see increased performance on the SSD compared with my internal bays on the old MP. My new setup is a late 2013 rMBP model (11,3) running a 27" NEC PA271W on the other TB channel, so I'm not sure if these are sharing an internal TB connection. This might affect things compared to a nMP.
My Blackmagic numbers:
1. 512GB Crucial M4:
MP 3.1 internal - 240.8 Write / 267.3 Read
rMBP via TBay IV - 248.6 Write / 385.4 Read
2. 4TB WD Black (about 55% full):
MP 3.1 internal - 141.9 Write / 140.6 Read
rMBP via TBay IV - 140.6 Write / 142.2 Read
So it looks like the M4 performance is much better on Read and a bit better on Write, while the TB connection on the HDD (which never maxed out the old MP) is about the same.
A few other observations.
1. My assortment of drives all mounted without problem, so does not appear as fussy as the Pegasus2.
2. The fan is loud enough to be noticed, at least when on my desk.
3. I also tried sleeping and restarting a few times, and the drives seem to reappear fine.
4. The drive caddies appear to go in and out smoothly .
5. When I open Disk utilities in 10.9.1, the S.M.A.R.T. status is available.
It looks like it's a $140 option for a second (daisy-chain) Thunderbolt port...?
$600 for a no-name Asian OEM drive case? I'll pass. $350 and I'll bite.
This model bases on
http://www.amazon.com/Thunderbolt-trayless-driverless-enclosure-technology/dp/B00AJWJMRG/
It was $399.00 on Jan, 2014
$700 today.
Look under the Specs tab for each device and it will usually say. According to OWC the 12TB uses Toshiba DT01ACAxx drives and the 16TB uses HGST 7K4000 drives.Does anyone know what is the internal hdd on the 12tb and 16tb versions?