Penta SATA HAT is now available

#21

In general I would better look than speculate and that’s what atop and /proc/interrupts are for :slight_smile:

IRQ affinity with RPi kernels is broken and as such cpu0 might be the bottleneck. That combined with ondemand w/o io_is_busy=1 and cpu0 while serving all interrupts might not even clock at 2400 MHz. And writes may generate twice as much IRQs compared to reads. But that’s speculation and it’s really easy to check for this with the aforementioned methods.

Also switching to performance governor might result in better throughput numbers since this masquerades parts of the problem (clockspeeds not ramping up quickly enough).

#22

It doesn’t seem like that’s the problem (testing with atop, monitoring cpu freq with vcgencmd, and also setting force_turbo—see my ongoing testing at https://github.com/geerlingguy/raspberry-pi-pcie-devices/issues/615).

#23

I have an extra Top Board if you want it. I watch your videos all the time and would be happy to send it along as a means of support.

The official case for the ROCK 4 works really well because the CPUs on those boards are on the undersides and the bottom of the case is essentially a big aluminum heatsink. Mine didn’t quite touch, so I bought some copper shims of various sizes to make up the difference. As a result, I have never seen the temperature of my CPU go above the high 30s.

Matt

#24

It seems the resellers are all out of stock of the Penta SATA HAT for Raspberry Pi 5.
Is there any ETA on stock?
Are there resellers in Australia?

1 Like
#25

@JohnC just saw them in stock on Arace Tech

1 Like
#26

@setq
Is there a way to get only the FPC PCI cable for the Pi?
I just got mine hat in, and Arace sent me the ROCK version, assuming these boards are the same…

#27

Thanks I have ordered.

1 Like
#28

Hi @seang,

You can get cable from here https://arace.tech/products/m-2-e-key-to-ipex-board

It is currently out of stock and should be in stock soon.

#29

Hi @setq would like to check on whether it is possible to set HDD sleep via firmware like the previous quad SATA hat model, or the only way to set sleep is via HDPARM command? Asking this because i’m still using spinning disk for long term backup…

#30

Hi! Looks like the hat is out of stock on Arace.tech (much cheaper than Allnet) and Amazon, does anyone have an idea on future availability (@hipboi @setq)? Thank you!

Edit: Why not also ask for any expected date on the OLED/fan extension and case :slight_smile:

1 Like
#31

I can’t get my SSD’s to show up under ubuntu server 24.04, I added the parameter dtparam=pciex1, rebooted… no luck. Anyone has any idea what might help me?

#32

Wrong topic, watch the headline please.

#33

Seems like it is out of stock everywhere. Any ideas, when it will come back?

#34

I would also love to know when there will be more stock! I have 4 SATA drives sitting here looking at me all accusatory.

1 Like
#35

Hi, I have bought ST5000LM000 2.5" drives which are 15mm thick.

Will these fit in this hat?

I can’t find the maximum drive thickness allowed anywhere (without needing extension cables). Thanks

#36

Hi @MadeinJack,

Sorry for missing the description of maximum thickness in our document.

The Penta SATA HAT supports a maximum thickness of 9.5mm 2.5-inch hard disk, but with a 9.5mm hard disk, the space between the hard disks is too small, which will affect heat dissipation.

1 Like
#37

Greets folks.

I’ve just got a Rock 5C, and some advertisements indicate that I can use the same Penta SATA HAT as for Pi 5. By mistake, I bought a Rock 3C hat version, with the IPEX cable.

Despite the bundle differences, are the hat boards actually the same? Can I use the board I got if I just buy an FPC cable?

Also, I noticed my hat board is revision 1.1, but some photos around the internet show a 1.2 revision. Does anyone know what are the differences between the revisions?

Thanks in advance!!

#38

Arace Tech just let me order one for the Pi5… at least I hope it is for the Pi5 :smiley:

And I hope they actually have it in stock and are not just pretending.

#39

Anyone tried booting RPi5 from one of the SATA drives? 4 HDDs on the SATA slots and a SATA SSD on the eSATA for boot would be cool… no more SD cards.

I tried but seems not working…

@geerlingguy have you tested this? Any suggestions?

@setq Any suggestions?

#40

Hello, could we please have some details on the fan connector below the HAT? What connector is that? I’d like to find a fan off-the-shelf that can directly connect to it (I don’t have any soldering gear) to cool the disks. The RPi connector is already used for a CPU fan.