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crocket
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 Posted: Mon Jan 06, 2020 12:07 am Post subject: An interesting ARM single board computer for NAS |
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Helios64 Official Announcement ! - Kobol Blog.
It is also suitable as an ARM build machine because it has RK3399 SoC with 4GB ECC RAM. If 4GB RAM is not enough for compilation, utilize swap on HDDs. |
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pjp
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| Posted: Mon Jan 06, 2020 3:15 am Post subject: |
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Soldered RAM? Is footprint the only technical reason to not have more?
Price seems OK, but not compelling (it'd have to win in a features / capabilities evaluation against competiors rather than being an easy yes).
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crocket
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| Posted: Mon Jan 06, 2020 3:59 am Post subject: |
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It's cheaper than many competitor NAS products with 4GB ECC RAM. It is also more flexible than ready-made NAS products. It consumes little power. I think price is the reason that it doesn't have more RAM. No affordable ARM single board computer has 8GB RAM, yet.
If you want more ECC RAM, you will have to look for other products for now. |
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pjp
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| Posted: Mon Jan 06, 2020 5:36 am Post subject: |
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$300 isn't that cheap, so at least for me, that's close enough to require a comparison. RAM sockets aren't a new technology (which is why I wondered about size vs. technical limitations).
The cost is tempting, especially with 1Gb and 2.5Gb Ethernet. But I'm thinking for more general use than a dedicated NAS. 4GB doesn't seem sufficient for ZFS.
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crocket
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| Posted: Mon Jan 06, 2020 6:04 am Post subject: |
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| If you limit the size of ZFS ARC and do not use ZFS deduplication, 4GB can be enough. Smaller ZFS ARC means slower performance. |
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erm67
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| Posted: Mon Jan 06, 2020 1:56 pm Post subject: |
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| pjp wrote: | Soldered RAM? Is footprint the only technical reason to not have more?
Price seems OK, but not compelling (it'd have to win in a features / capabilities evaluation against competiors rather than being an easy yes). |
4GB is the max supported ram, there would be little use for dimm sockets.
| Quote: | Memory
Dynamic Memory Interface (DDR3/DDR3L/LPDDR3/LPDDR4)： Compatible with JEDEC standard DDR3-1866 /DDR3L-1866 /LPDDR3-1866 /LPDDR4 SDRAM. Support 2 channels, each channel is 16 or 32bits data width. Support up to 2 ranks (chip selects) for each channel; totally 4GB(max) address space. Maximum address space of one rank in a channel is also 4GB, which is software-configurable |
According to some news they switched from Marvell SoC to Rockchip RK3399, A Marvell SoC would be a lot better ....
Also the RK339 has only one 4 lanes PCI-E 2.1 slot, the max theoretical speed should be 2 GB/s (If I am not wrong) and they connected 1 2.5Gbit/s ethernet and 5 sata controllers to this slot. I 'd wait for some benchmarks .... at least they did not use an onboard gigabit-usb adapter 
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erm67
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| Posted: Mon Jan 06, 2020 2:28 pm Post subject: |
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| crocket wrote: | | If you limit the size of ZFS ARC and do not use ZFS deduplication, 4GB can be enough. Smaller ZFS ARC means slower performance. |
You mean the problem was a too smaller ARC?
https://www.phoronix.com/scan.php?page=article&item=ubuntu1910-ext4-zfs&num=2
In fact the only good benchmark used 1000 1MB files i.e. was entirely in RAM/ARC....
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pjp
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| Posted: Mon Jan 06, 2020 6:54 pm Post subject: |
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| erm67 wrote: | | Quote: | Memory
Dynamic Memory Interface (DDR3/DDR3L/LPDDR3/LPDDR4)： Compatible with JEDEC standard DDR3-1866 /DDR3L-1866 /LPDDR3-1866 /LPDDR4 SDRAM. Support 2 channels, each channel is 16 or 32bits data width. Support up to 2 ranks (chip selects) for each channel; totally 4GB(max) address space. Maximum address space of one rank in a channel is also 4GB, which is software-configurable |
According to some news they switched from Marvell SoC to Rockchip RK3399, A Marvell SoC would be a lot better ....
Also the RK339 has only one 4 lanes PCI-E 2.1 slot, the max theoretical speed should be 2 GB/s (If I am not wrong) and they connected 1 2.5Gbit/s ethernet and 5 sata controllers to this slot. I 'd wait for some benchmarks .... at least they did not use an onboard gigabit-usb adapter ;-) |
Thanks. I don't believe I've ever noticed a reference to channels and bits. I'll try to remember when I look at other solutions. This definitely looks like a pass (for me).
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erm67
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| Posted: Mon Jan 06, 2020 9:19 pm Post subject: |
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I was wrong, according to rockchip the theoretical max speed of the pcie slot is 5GTransfer/s, it might be enough for 5 rotational disks, and nobody owns a 2.5Gbit/s switch anyway ..... I still wait for benchmarks.
test posted on the forum for the rockpro64, a board that uses the same RK3399 SoC show a 1.5Gbytes/s speed in practice.
https://forum.pine64.org/showthread.php?tid=6513&pid=40714#pid40714
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xaviermiller
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| Posted: Fri Jan 10, 2020 12:33 pm Post subject: |
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Hello,
Pre-orders are open!
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crocket
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| Posted: Tue Feb 04, 2020 10:24 pm Post subject: |
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| Compared to NAS options with 2~4GB non-ECC RAM in my local market, this one is better and cheaper. If I wanted to buy a NAS, there are good reasons to buy this one. Helios64 can also serve as an ARM build machine with swap on HDDs. |
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Gentoo on ARM
