MP 7,1 10 pin sata power max power limit?

[DrEGPU]

The Mac Pro 7,1 has a 10 pin socket that is used to power 2x sata drives. Does anyone know the power limit for this? I’d like to use it to power 4x drives with a custom cable of course. Hopefully it can handle ~90W?

 

[TzunamiOSX]

The Mac Pro 7,1 has a 10 pin socket that is used to power 2x sata drives. Does anyone know the power limit for this? I’d like to use it to power 4x drives with a custom cable of course. Hopefully it can handle ~90W?

If it can power this, I'm sure it can power 4 drives. But why do you think 4 drives needing 90 Watt?

In reality, 1,5 Ampere per line, 3 lines per SATA-connector = 4.5 amps at 5 Volt = 22.5 Watt

2x 22.5 Watt = 45 Watt.

But there is also 12 Volt available, perhaps it allows current like Molex (11 Amps)

EDIT:

10 Drives on the connector

 

[DrEGPU]

Interesting! I hadn’t heard of those. I’d like to put in 4x U.2 drives connected to an hba card.

 

[mattspace]

Anyone have a link to the type of PCI card needed to feed data to one of these arrays? most searches I've tried are just showing up M.2 cariers, or external eSATA cards.

 

[TzunamiOSX]

Anyone have a link to the type of PCI card needed to feed data to one of these arrays? most searches I've tried are just showing up M.2 cariers, or external eSATA cards.

Areca for example

https://www.areca.com.tw/products/sasadapters-1883.html

The test:

2019 Mac Pro - Pro Caddy V with HDDs

real world speed test results for performance minded Macintosh users

barefeats.com

 

[DrEGPU]

I’m going to use a highpoint rocket 1120. It doesn’t have hardware raid, but does use a plx chip (or whatever) so all drives/lanes can be “seen” by the Mac Pro.

Highpoint sells the SSD7120 which does have hardware raid. This is nice, since the drivers allow the partition to be seen under windows and MacOS, assuming you format it to be seen by both.

 

[mattspace]

Again, newb questions, but looking for a card to feed one of these arrays if you wanted to make full use of the 10 drive capacity, your criteria are...

• 10? SATA ports
• PCI3 x8? or x16?

Hardware RAID makes it more turnkey and handles the processing overhead, but means the data is bound to the RAID card, so changing card requires wiping and recreating RAID?