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NNTP-Posting-Date: Tue, 21 Jan 2025 23:22:57 +0000
Subject: Re: News : ARM Trying to Buy AmperComputing
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From: "186282@ud0s4.net" <186283@ud0s4.net>
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Date: Tue, 21 Jan 2025 18:22:56 -0500
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On 1/21/25 4:12 AM, D wrote:
> 
> 
> On Mon, 20 Jan 2025, 186282@ud0s4.net wrote:
> 
>> On 1/20/25 3:53 PM, D wrote:
>>>
>>>
>>> On Mon, 20 Jan 2025, The Natural Philosopher wrote:
>>>
>>>> On 20/01/2025 09:30, D wrote:
>>>>>>
>>>>>>  The Pi hat or OMV ?
>>>>>
>>>>> The pi, with directly connected spinning disks. Does the hat have 
>>>>> its own extra power supply?
>>>>
>>>> I've managed to get a P4 I think to run one spinning rust disk 
>>>> without extra power.
>>>> Strictly it depends on the disk.
>>>> The pi hat for 5 drives has an external 60W PSU
>>>
>>> Ahh, if it has an external PSU then there is no problem. Ideally, if 
>>> the pi hat for 5 drives is intended to accomodate 5 spinning drives, 
>>> it would be nice if it did so at full speeds.
>>
>>
>>  One review said the WRITEs were a little pokey,
>>  but not TOO bad. READs were apparently snappy.
>>
>>  This is OK ... most stuff on HDDs is "write once /
>>  read more often".
> 
> Hmm, do you have a link? What does "a little pokey" mean in terms of 
> writes? If it is only performance and latency related, then it is ok, 
> since the software will take care of a lot of that for me.
> 
>>> Given that the server manufacturers seem to no longer want to produce 
>>> smaller, cheaper nodes, but only want to sell huge GPU machines, I'm 
>>> contemplating if it actually might not be possible to build a nice 
>>> archive solution on pi:s, spinning disks and a few cards at a good 
>>> price.
>>>
>>> To be continued... as the saying goes.
>>
>>  Yep ... lemme get in and fool with my 5-drive unit
>>  a bit and I'll write a hands-on report. The price
>>  is good enough (the DRIVES are $$$ alas)
> 
> Great! =)
> 
>>  Even without the SATA hat ... you CAN run a number
>>  of external USB 3.x drives from a Pi. Won't be as
>>  quick, but it works OK.
> 
> My plan, if it works, is to pitch this to a company, so I think the USB 
> way, although ok for home use, would not be accepted. =(
> 
>>  And yea, I know what you mean about everybody trending
>>  towards "overkill" boxes/systems. Better $ margin I guess.
>>  Still no shortage of motherboards - so you can build
>>  your own "appropriate" boxes.
> 
> This is the truth! I wonder if it would be possible to 3d print boxes 
> for custom components at a good price? If the pi-road works, I could 
> imagine a nice custom printed part of the chassi to enable nice plug and 
> pray replacement of pi:s! Just pull out a pi module, replace, and go! =)
> 
>>  For an NAS, it's the drive speeds that are kinda the
>>  limiting factor, so even a 'slow' motherboard won't
>>  hurt anything. It's all I/O-bound.
> 
> As long as the reads and writes are taken care of I'm planning on using 
> some software defined storage solution to help me handle that. Maybe the 
> solution is to add a ssd as a cache or something, or split the data to 
> be written across several spinning disks. What worries me with flaky 
> storage is massive rebuilds.
> 
> Hmm, is there a way to get Pi:s on a 10 Gb network? Or are they limited 
> to 1 Gb only?
> 
>>  The popular Sinology canned NAS units - 4/6/8/12 drive
>>  units with multiple network plugs - all use basically
>>  laptop-grade 'Celeron' grade processors.
> 
> Synology are trying to enter the enterprise market! I encountered them 
> in a discussion with a university where they proposed to store 1 PB on 
> their biggest product. Since they use some kind of linux inside, they 
> had all kinds of weird limitations on the nr of files in the same 
> directory etc. Very strange, but it was enough to point at the 
> limitations to get the university to drop them like a hot potato! In the 
> end I did not win, because my customer references where too honest (it's 
> a great solution) vs the competition who obviously orchestrated their 
> customers (it's like having a friend who does everything for you, I 
> never touch the storage, the vendor does anything I ask). =( Well, let's 
> see how happy they are once the signature is on the dotted line.

   I had good luck with Sinology units. Enough features
   plus some perks. Software updates maybe every two or
   three months. Fair selection of software add-ons.

   They DO use some kind of Linux ... had to write a few
   little scripts and Python bits. Do NOT put those in
   the system parts of the drive or they'll be overwritten
   on your next update. I just made a share and kept my
   little system tweaks there. The GUI supports setting up
   on-boot/timed/conditional calls to scripts and stuff.

   Attached an external USB to the unit and ran a pgm to
   do backups of the Most Important stuff every night.
   For extra security I had it attach the USB drive
   just before starting and then disconnect it a little
   bit later - nothing for Vlad to see. The USB ports
   were like /dev/bus/040 or something - took a little
   while to FIND them. Python had enough to emulate
   plugging-in the drive and then un-plugging it.
   Not sure I have that code anymore alas ... I'm
   gonna dump a lot of backup sticks to my Pi NAS
   when it's ready so maybe I'll find it.