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  #21  
Old 11-07-2017, 05:33 AM
Sardi Sardi is offline
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Default ssd in drive sled or on pcie card - MacPro

Yep.

I guess I wasn't clear. That's what I meant. It also hides it from the finder window, not just the desktop.

Not being able to access the contents of a drive without unhiding it isn't really ideal IMO. I'd just hide all mounted drives from the desktop and just have them sit in the side of the finder window.


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Last edited by Sardi; 11-07-2017 at 05:53 AM.
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  #22  
Old 11-07-2017, 05:48 AM
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Default Re: ssd in drive sled or on pcie card - MacPro

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I'd just hide all mounted drives from the desktop and just have them sit in the side of the finder window.
This!

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  #23  
Old 11-07-2017, 05:49 AM
musicman691 musicman691 is online now
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Default Re: ssd in drive sled or on pcie card - MacPro

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So try those. In the last example you obviously need to replace "hideme" with the name of your drive you wish to be hidden
Thanks for the amplification on that - wasn't sure as I didn't see a drive name
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Originally Posted by Sardi View Post
To confirm - you just want the drive icon hidden from your desktop yeah? Do you want the other ext. drive icons visible on the desktop? If not, just do what was mentioned above and then access the drives via a finder window.

Also, I believe the chflags command mentioned will hide them from the finder window as well. Essentially, the drive will be mounted but hidden and therefore inaccessible. Not sure that's the best idea for a system drive.

I used to leave my drive icons on the desktop in the past as well, but then realised I NEVER clicked on them. I always accessed the drives via finder windows. Much cleaner desktop.


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Yes - I just want the system drive icon hidden from the desktop. I don't mind the other drives showing the times I want them showing. There are times I'd rather deal with the drives when they show on the desktop and not the sidebar in a Finder window.
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  #24  
Old 11-07-2017, 05:52 AM
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Default Re: ssd in drive sled or on pcie card - MacPro

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This!

EDIT: my 15000th post, yay :)
Congratulations Janne

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  #25  
Old 11-07-2017, 05:52 AM
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Default Re: ssd in drive sled or on pcie card - MacPro

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This!

EDIT: my 15000th post, yay :)
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  #26  
Old 11-12-2017, 07:06 AM
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Default Re: ssd in drive sled or on pcie card - MacPro

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Mid 2012 5,1 MacPro with 3.46 GHz hexcore cpu. Going to add a 960 gig Samsung 850 Evo as system drive to replace the 1 TB drive currently there. I know the 850 will be way faster than the old spinner with both in their respective drive sleds. My question is: will I see any appreciable improvement in performance between that same drive in the drive sled or via an OWC Mercury Acelsior S in one of the pcie slots? I know the pcie card position will be faster but with the drive in question will it be enough to make it worthwhile to get the Acelsior card?
I purchased two Samsung 850 Pro SSDs (512GB each) to put into two Mac Pro towers. I installed one on a drive sled in a 2010 2.66 GHz 12-core and the other in a 2009 5,1 firmware 3.47 GHz hex-core on an OWC Accelsior PCIe card.

I posted some results in an earlier thread titled "Latest thoughts on 500 GB SSD for Mac Pro."

2009 Mac Pro 6-core 3.47 (4,1 flashed to 5,1):

Seagate Constellation 1TB spinner: Write 169.4, read 153.3
Hitachi 1TB spinner: Write 128.1, 132 read
Vertex 4 128 GB SATA III 6Gbs (in a SATA II drive bay): Write 258.2, read 262.1
Samsung 850 Pro 512 GB in a PCIe slot (in an OWC Accelsior adapter): Write 501.6, read 516.4

2010 Mac Pro 12-core 2.66 (stock 5,1):

Seagate "Hybrid" spinner 2TB 7200 rpm (larger than normal cache, see below*): Write 180, read 208
Western Digital "Black" 1TB 7200 rpm: Write 171.9, read 173.7
Apple SSD 512GB (original boot drive) Write 155.4, read 217.2
Samsung 850 Pro 512 GB (in a SATA II drive bay) Write 257.1, read 270.0

The Accelsior PCIe card is pretty much twice as fast. It is a combination of both the PCIe bus and the fact the Accelsior enables SATA III.

Still slow compared to the MBP on-board drives:

Early 2015 MacBook Pro i5 dual core 2.7 GHz has PCIe 2.0 4-lane technology: Write: 1,359, read 1,381.7. The late 2013 and mid 2014 MBPs shipped as PCIe 2.0 2-lane, but will recognize a PCIe 2.0 4-lane from a black cylinder Mac if swapped out (per everymac.com).

The Accelsior setup outperforms these external drives connected by either TB2 or USB3 to the MBP:

external drives on the MBP:

Seagate BU+ 4TB connected to USB 3.0 (spinner): Write 143.5, read 158.0
G-Technology G-Raid Studio 6TB connected to Thunderbolt: (2) 7200 spinners configured in RAID "0" Write 287.7, read 291.9
G-Technology G-Drive SSD ev512 GB connected to USB 3.0: Write 404.6, read 417.4

Tests were with the Blackmagic Design drive test.

The 2016 and 2017 MBPs have PCIe 3.0 and are even faster (have one on the way).

Even with the SATA II sled, you will get performance almost equal to a 7200 rpm RAID 0 TB2 external drive setup.
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  #27  
Old 11-12-2017, 08:13 AM
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Default Re: ssd in drive sled or on pcie card - MacPro

panamajack:
Thanks for the numbers on the tests - this is what I was looking for when I started this thread - some numbers I could look at to see whether the performance uptick was worth the extra bucks for the Acelsior card. I've seen far too many 'snake oil' claims for things that make a computer faster that I've come not to trust said claims and seek the data & experiences from multiple sources. As you've seen in this thread I'm using the EVO version and not the Pro but the performance gain should be about the same percentage wise.
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  #28  
Old 11-12-2017, 12:35 PM
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Default Re: ssd in drive sled or on pcie card - MacPro

Difference between Pro and EVO is the warranty, their specs are similar.

Sonnet also makes an SSD PCIe card, the Tempo SSD. Costs $99 and ships with an expansion board so you can install two SSDs. The Tempo supports both RAID and boot.

Another recent Sonnet PCIe card is the Allegro USB-C. What interests me is it is a PCIe 3.0 card, but if you put it into a Mac Pro tower (PCIe 2.0), it will auto-negotiate to two-lane performance. Sonnet states this ensures 10Gbps performance. I just ordered a USB-C external SSD which would be interesting to test with the Sonnet Allegro USB-C card. I bought it for a MBP with TB3 but am curious to know how it would compare to the Samsung 850 in the MP tower.

The technology is changing faster than ever. There is now an external Sonnet TB3 box that can house a single HDX card...costs $349. And can connect to a TB3 MBP.

Just read that a fully loaded upcoming iMac will likely cost $17,400. Will take a rain check on that one.
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