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MP 7,1 Received my Promise 2Ji today

Hopefully an AASP service manual will enter the wild soon enough and we can get the max watts on that port. Nice call on the spare pins. I think I’ll wait to build a cable until I make sure it can safely fire all my SSD; else put a voltage adapter on the PCIe power header. I want it to look as clean as possible, despite not running open frame. Thanks for all the great info and cable sourcing; I’ll link here for others asking for an easy premade solution.
 
bxs said:
The best feature for SoftRAID is that it can manage RAID set beyond what Apple provides with it Disk Utility. DU can manage/setup RAID-0 and RAID-1 only, whereas SoftRAID manages RAID septs up to 10.
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I know this is a little late (and not quite on topic) but FYI you can achieve RAID10 (aka RAID 1+0, which gives a hint as to how it's achieved in Disk Utility).

With your, say 4 drives, you create two RAID1 sets, with 2 drives each. This produces two new "devices", each one a RAID set. You then setup a new RAID0 set, choosing the two previously created RAID1 sets as the members.

The GUI will set it up fine (well certainly did under Mojave), and mostly reports about it OK, but occasionally the DU GUI will say a member is missing. A quick trip to the terminal and `diskutil AppleRAID list` will report the true status more reliably.
 
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Stephen.R said:
I know this is a little late (and not quite on topic) but FYI you can achieve RAID10 (aka RAID 1+0, which gives a hint as to how it's achieved in Disk Utility).

With your, say 4 drives, you create two RAID1 sets, with 2 drives each. This produces two new "devices", each one a RAID set. You then setup a new RAID0 set, choosing the two previously created RAID1 sets as the members.

The GUI will set it up fine (well certainly did under Mojave), and mostly reports about it OK, but occasionally the DU GUI will say a member is missing. A quick trip to the terminal and `diskutil AppleRAID list` will report the true status more reliably.
Click to expand...
Interesting approach to configuring RAID 10. Thanks.... :) 👍
 
bxs said:
That is an interesting approach. Would this unit get data/power from the three sockets that Apple provides for the Promise Pegasus J2i HDDs ?
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You could power the unit from the 10Pin to two SATA power connectors. You would need to get a Highpoint SSD7120 NVMe controller for data. But that's 16X of PCIe NVMe drives and the capacities on u.2 are much higher and better priced that m.2. You can get used stuff on eBay for $1/GB.

U.2 Non-Bootable - Gen3 | HighPoint-tech.com

HighPoint high port count (HPC) SSD7180 & SSD7184 & SSD7120 NVMe RAID controllers are ideal for professional applications that require a small-footprint, mass-storage NVMe solution that can take full advantage of the PCIe 3.0 x16 transfer bandwidth. This performance-focused NVMe RAID...
highpoint-tech.com highpoint-tech.com
 
bxs said:
Interesting approach to configuring RAID 10. Thanks.... :) 👍
Click to expand...
Just to clarify: anything doing RAID10 is doing the same thing - it’s likely just hiding the intermediary steps from you.
A stripe over mirrors is literally what RAID 10 is. If you made two of them and made another stripe (across the stripes) you’d have RAID 100 (seriously).
 
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