Re the ebay part linked above,the description says;
2:The product only support read data and write data in SSD,don not support as the system startup disk.
Which seems to suggest no booting available?
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SATA Express meets the '09 Mac Pro - Bootable NGFF PCIE SSD
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Re the ebay part linked above,the description says;
2:The product only support read data and write data in SSD,don not support as the system startup disk.
Which seems to suggest no booting available?
With the cMP, it seems that the SM951 in RAID 0 is not doubling the speeds of a single card. The SM951's on-chip controller cannot negotiate a full-speed link in the cMP x16 slot, only in the x4 slot, whereas the XP941 can negotiate a full-speed link in any slot. So the fantastic speeds BareFeats reported by putting the XP941 in slots 2 and 3 cannot be improved upon with an SM951 in slots 2 and 3, and moving the SM951 to slots 3 and 4 is going to be slower for the same reason the XP941 is slower: the two drives share the same x4 uplink to the CPU. Consequently, the best two SM951s in RAID 0 can do is around 1500 MB/s, which is about what a single SM951 can do in PCIe 2.0.
I also went into the fine print AFTER having ordered the adapter and jolted in my chair.
Anyway, the keyword here is that it is in fact an adapter, not a controller that needs additional OS support to boot. This cheap piece of gold simply acts as a link between the SSD and the Mac Pro and then works as a normal hard drive.
That has to be my conclusion at least, after having installed it with zero work or issues. Being a PCIe hard drive it shows up in OS X as an 'external' drive by default. If you don't like the orange icon it's easy to swap it to whatever else you like.
I boot from mine (and many others do too)
I have seen other such adapters and the fine print was for a PC that does not have support in BIOS or is not X99 or Z97 so it cannot be used as a boot drive or device, such as the XP941 I have in an older Z87 and being used as a data-only volume.
Maybe something in the translation? as English is not native language it seems given all the spelling and syntax errors.
From what I learned on www.Ramcity.com I was amazed that every Mac Pro can use an XP941 as a boot drive using an adapter, and nice to see they are not controllers that a) cost more, b) require firmware to be enabled as boot drive, c) driver.
Yes. But then again, PCIe remains our limit. Will NVMe bring other benefits to our old machines?
Loa
Well, this is interesting. I was thinking the SSUBX would be at 2.5 in slot 2. So, at least in some cases, the MZ-KPV1T00/0A2 works at 5.0, but perhaps the MZ-KPV1T0R/0A2 never will. Thoughts?
The MZ-KPV1T00/0A2 has the controller of the SM953, and this model is very rare.
On eBay only the MZ-KPV1T0R/0A2 aka SM951 are available these days, so you can generally say SSUBX are at 2.5 in slot 2.
The term 'SSUBX' includes two models, the older MZ-KPV1T00/0A2, and the newer MZ-KPV1T0R/0A2.
Maybe we see the MZ-KPV1T00/0A2 in the next Mac Pro again.
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Thanks for clearing that up for me. It would be nice to have a current Apple-branded drive that could run in Slot 2 of the 2009 Mac Pro. I will be fortunate to just find a MZ-KPV1T0R/0A2!
Does anyone know if the SSUBX MA-JPV512R/0A2 is a 2x part or a 4x part? Seller says "Apple" told him that it's a 4x part but he's not sure.
Thanks, made the buy. I really don't need 1TB on the system drive, but didn't want to buy a 2X part. What kind of speed do you get from the 512GB stick?
All the SSUBX benchmarks I've posted are from the 512GB part. Expect 1500-1600+ read/writes in Quickbench. Less in BlackMagic.
The SM951/ssubx in slot 2 is initialized directly on the PCIe bus VS a PCIe bridge in slots 3 & 4. If an active PCIe bridge were plugged into slot 2, the subsequent slots may be properly initialized. Finding the proper bridge at a reasonable cost is the issue.
The only active bridge I've been able to track down at a reasonable cost is this one from SuperMicro:
Whether the PCIe bridge on this card is supported in OS X on the MacPro is the question. FWIW.. this bridge can easily be extended into a position to work within the 4,1/5,1 case.
Attachments
AFAIK a new controller chip on the motherboard is necessary for NVMExpress. So there will be no NVMExpress on the cMP and on nMP 2013.
I wonder if the next generation (built in the Mac Book 2015, the "H' series) using NVMExpress will still be compatible with AHCI?
And last but not least: Anyone knows if the "H" series has the same form factor as previous SSUBX blades? Or is it soldered on the board? Is there already an iFixit teardown of the MacBook 2015?
I highly doubt that (new chip neccessary on the MLB). where did you get this info?
AFAIK, MacBook 2015 (12" retina) has the SSD soldered to the MLB. MacBook Pro and Air 2015 are equipped with SSUBX blades.
I read this once, but cannot find the source anymore. I would be glad if I'm wrong.
From my memory: At least on the PC side, the UEFI on the boards need an update to support NVME. I doubt that Apple will give us new firmware updates...
So we have two wait for newer Mac Book Pro's/Air's to know it the 'H' Generation is compatible with AHCI, or gives us even MVME.
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And yet... support for XP941 and adapter was there pretty much all along with Mac Pro 1,1 on, with its EFI 1.x that dates back to a year before the Mac Pro was released.
Whereas with my PC, yes I would need BIOs update, have to use UEFI to boot from M.2. But my lycom adapter does work with an XP941, but only as a storage drive and not to boot from, using Windows 10 TP.
AnandTech about the NVMe SSD in the 12" MacBook (2015)
http://www.anandtech.com/show/9136/the-2015-macbook-review/8
http://www.anandtech.com/show/9136/the-2015-macbook-review/8
This ad says "active."
http://www.acmemicro.com/Product/13...E16-A-LHS-Active-PCI-E-2U-Riser-Card?c_id=356
This ad says "passive."
http://www.compsource.com/pn/RSCR2UGA2E16A/Supermicro-428/?src=F
However, SuperMicro site says "active."
http://www.supermicro.com/ResourceApps/Riser.aspx
No returns on this product if it doesn't help, though.
usually, these PCIe bridge/switch chips do their thing on their own. no KEXT needed AFAIK. OS X doesn't have to "know" anything about it. for example: the HighPoint RocketU 1144C USB 3.0 controller card has a PLX PCIe bridge. it shows up in the OS X System Profiler but with "Driver Installed: No".
