I can swap easily and fast the spinpoints. I really like the system, I've got 2 1TB Samsung EVO's SSD's in RAID0 for fast work and 2 2TB Samsung spinpoint's for backups in there. Overeengekomen verbindingssnelheid: 6 gigabitīeschrijving: AHCI Version 1.20 Supported I use them in RAID0, so with up to 700 speeds it's not a really big deal for me, but I am still curious why I can't get any higher speeds. I've got a BlackMagic MultiDock 2 as well and am curious as hell why my 840/850 EVO 1TB's won't get the speeds I expected. If I do not get support I will entertain opening the device and reading the part numbers off the controllers and seeing if they are to spec. independent SATA 3 disk interface chip per disk slot so you never get slowdowns because of SATA bandwidth issues. I do suspect the listing of SATA 3 is false, despite how many times I have seen it. 382 MB/s is near the nominal SATA 2 spec of 3 Gb/s. The Samsung SSD 850 EVO is specified at a sequential write speed of 520 MB/s and a sequential read speed of 550 MB/s. I don't know why the MultiDock single drive interface is remarkably slower. Lastly, an internal speed test (Note, AJA System Test will not write to the system drive). Here are the results of my test on the Blackmagic MultiDock Ver. So 30MB/s = 50 tracks in record and 50 tracks in playback - or 100 tracks in PB and one in record at 10% bandwidth of the drive. For Audio 96kHz/24bit =~ 300KB/s per track. Booting from it feels fast and responsive and 350MB/s R/W is still no slouch.
#Blackmagic multidock 2 update
I fear that BM will most certainly update these with 2 TB ports and SATA III internal chopping any resale in half - but at the same time - using this unit as a JBOD with just SATA II speeds is working really well. It completly solves my local storage needs (3 drives - 2TB of SSD storage and 1TB of 7200rpm back up - drive usually unmounted and off). Hopefully I will never be pulling them in and out so often that I ever find that point. I realized after putting the drives in and out a few times that this tight fit has to degrade somewhat over time. It worried me at first with the one 7200rpm spinner I put in (as if the spindle would rest on something) but it hasn't turned out to be an issue. The bay can easily fit thicker drives (most of mine are 9mm). Where it is a little looser is in the up down fit. No way a casual brush will disconnect the drive.
The SSDs press into place but the fit is nice and snug - nothing like a cheap USB case where the slightest nudge looses connection. Partition Map Type: GPT (GUID Partition Table) This is just like having my four bays in the old MacPro back (though 2.5" drives only which is just fine with me).Īnd I booted a clone from it with no issues as well These are way at the upper end of theoretical SATAII speed but way less than the published 500MB/s+ speeds this drive can do. With the EVO 1TB 840 drive I get 340/385 W/R.
#Blackmagic multidock 2 pro
Will test with 512G 840 Pro drive tomorrow.
#Blackmagic multidock 2 full
I am unsure if the BM MD can do full SATA III speeds (nothing looking that good so far) - BUT - in the Apple system Information I see 6 Gbps negotiated speed. ~650MB/s writing to them both at the same time (8GB test file) In the limited testing I have done I am getting Write /Read speeds ofģ07/345 for an older Samsung 830 256G (trim enable through TB worked fine) I removed all my recording and sample drives from USB3 and put them in the BM MD. SATA II controllers (per email from Blackmagic)īut for the ProAudio work I do (ProTools 11HD, Avid HD Native Thunderbolt on a late 2013 i7 imac.) this has solved all of my performance issues (was having CPU overload errors with many plug ins recording and working at 96kHz 64 buffer). So far able to get 650MB/s writing to two drives at onceįour independent SATA controllers (one per drive bay)
Seems to be SATA II after all (I see 6Gbps in "System Information" as the negotiated speed on my Samsung 830 and 840 non pro and 840 EVO drives)
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