-
new 5k config
-
I’m hoping that when Thunderbolt 3/USB-C MacPro comes out that using the iMac 5K in target disc mode will be an option to save $2000+ on a 5k monitor. Was hoping the new MacPro would be here by now.
When you mention saving $2000+ on a 5k monitor that suggests you are thinking of using the iMac in Target Display mode as a monitor. Am I correct? Target Disk mode is different as you may know.
The 27″ 5k iMac does not support Target Display mode.
-
Right Display mode. Sorry.
My understanding is that the 5K could support it but
that there’s no port that can properly drive the 5K … yet.
I read somewhere that
should become possible with Thunderbolt 3.
Mac Pro, macbook pro, Imacs (i7); Canon 5D Mark III/70D, Panasonic AG-HPX170/AG-HPX250P, Canon HV40, Sony Z7U/VX2000/PD170; FCP 6 certified; FCP X write professionally for a variety of media; teach video production in L.A.
-
Then aren’t we an agreement
Thunderbolt 3 and DisplayPort 1.3 could support the data rates, etc required but the current 5k iMacs have neither of those.
Maybe I have misunderstood and you are considering buying an iMac later when those connections will supported
-
Yes we are on the same page. I had hoped that it would be supported before I invested in my next Mac.
Just feeling that based on the release of Intel’s latest chips that it might be a short time before the next gen of iMacs/MacPros are released with significant improvements.
https://www.macrumors.com/2015/08/19/intel-skylake-three-4k-monitors-60hz-details/
Mac Pro, macbook pro, Imacs (i7); Canon 5D Mark III/70D, Panasonic AG-HPX170/AG-HPX250P, Canon HV40, Sony Z7U/VX2000/PD170; FCP 6 certified; FCP X write professionally for a variety of media; teach video production in L.A.
-
[Craig Alan] “I was talking to OWC support and the only thing he added to the picture is that all drives within a raid need to be the same firmware. He said the enclosure does not determine what firmware to use but just that the internal drives match.”
Well, you’d think OWC would know, but I asked Lloyd Chambers who wrote this review and has extensive experience in system-level I/O. He said you can mix and match freely in the Thunderbay 4: https://macperformanceguide.com/Reviews-OWC-Thunderbay.html
[Craig Alan] “I assume stripe size is an option when you configure the raid using Promise utility?
If so what stripe size do you recommend?…So unless there is a real reason to create a new raid 5 using a different raid format and copying over from the one with stripe 128K, I’ll leave this as is and consider your suggestion as I reformat the rest of them.”The main implication of my tests were the R4 was very slow to format using a 128KB stripe size. To a lesser degree this can also effect your I/O efficiency since you ideally want the average I/O size to match the stripe size.
In general a larger stripe size is better for images and video. You can crudely approximate I/O size on a given workload by running those tasks while watching Activity Monitor. In Activity Monitor select “Disk” and divide “Data read/sec” by “Reads in/sec”. E.g, 100 megabytes/sec divided by 100 reads/sec = 1 megabyte I/O size. It fluctuates a lot — you just want a rough number. Ditto for writes, but typically reads predominate so are more important. In general it’s not that critical so I wouldn’t worry about it. Maybe next time you reformat (if ever) use 256KB or 512KB stripe size.
-
[Craig Alan] “I was told the firmware on each drive within the unit must match. How could you tell what will match?”
I just bought what I thought was a good drive and put it in. It’s been flawless.
Jason Jenkins
Flowmotion Media
Video production… with style!Check out my Mormon.org profile.
-
[Joe Marler] “Well, you’d think OWC would know, but I asked Lloyd Chambers who wrote this review and has extensive experience in system-level I/O. He said you can mix and match freely in the Thunderbay 4:”
Yeah but my drive is a Mercury which is a 2 drive hard raid not soft. And my Pegasus is a hard raid as well. I’ve heard this before that the drives need to be the same in these.
Mac Pro, macbook pro, Imacs (i7); Canon 5D Mark III/70D, Panasonic AG-HPX170/AG-HPX250P, Canon HV40, Sony Z7U/VX2000/PD170; FCP 6 certified; FCP X write professionally for a variety of media; teach video production in L.A.
Reply to this Discussion! Login or Sign Up