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computers / comp.sys.raspberry-pi / Re: Pi as main storage and server.

SubjectAuthor
* Pi as main storage and server.The Natural Philosopher
+* Re: Pi as main storage and server.Theo
|+* Re: Pi as main storage and server.Andy Burns
||`- Re: Pi as main storage and server.Theo
|`* Re: Pi as main storage and server.The Natural Philosopher
| `* Re: Pi as main storage and server.Theo
|  +- Re: Pi as main storage and server.The Natural Philosopher
|  `* Re: Pi as main storage and server.Chris Elvidge
|   +- Re: Pi as main storage and server.The Natural Philosopher
|   +- Re: Pi as main storage and server.Ahem A Rivet's Shot
|   `- Re: Pi as main storage and server.Theo
+* Re: Pi as main storage and server.NY
|+* Re: Pi as main storage and server.NY
||`* Re: Pi as main storage and server.Jim Jackson
|| +- Re: Pi as main storage and server.NY
|| `* Re: Pi as main storage and server.The Natural Philosopher
||  `- Re: Pi as main storage and server.druck
|`- Re: Pi as main storage and server.The Natural Philosopher
+* Re: Pi as main storage and server.Pancho
|+* Re: Pi as main storage and server.The Natural Philosopher
||`* Re: Pi as main storage and server.Theo
|| `* Re: Pi as main storage and server.The Natural Philosopher
||  +* Re: Pi as main storage and server.Theo
||  |+- Re: Pi as main storage and server.The Natural Philosopher
||  |+* Re: Pi as main storage and server.Chris Green
||  ||`* Re: Pi as main storage and server.Jim Jackson
||  || `- Re: Pi as main storage and server.The Natural Philosopher
||  |+* Re: Pi as main storage and server.Michael Schwingen
||  ||`* Re: Pi as main storage and server.The Natural Philosopher
||  || `- Re: Pi as main storage and server.Michael Schwingen
||  |`* Re: Pi as main storage and server.druck
||  | +* Re: Pi as main storage and server.The Natural Philosopher
||  | |`* Re: Pi as main storage and server.druck
||  | | `- Re: Pi as main storage and server.The Natural Philosopher
||  | `* Re: Pi as main storage and server.Michael Schwingen
||  |  `- Re: Pi as main storage and server.The Natural Philosopher
||  `* Re: Pi as main storage and server.Pancho
||   `* Re: Pi as main storage and server.The Natural Philosopher
||    `* Re: Pi as main storage and server.Pancho
||     +- Re: Pi as main storage and server.TimS
||     `* Re: Pi as main storage and server.The Natural Philosopher
||      `* Re: Pi as main storage and server.Computer Nerd Kev
||       `* Re: Pi as main storage and server.Computer Nerd Kev
||        `- Re: Pi as main storage and server.Michael Schwingen
|`* Re: Pi as main storage and server.Jim Jackson
| `- Re: Pi as main storage and server.Pancho
`* Re: Pi as main storage and server.Chris Green
 `- Re: Pi as main storage and server.The Natural Philosopher

Pages:12
Re: Pi as main storage and server.

<3r3muj-gvoi1.ln1@esprimo.zbmc.eu>

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From: cl...@isbd.net (Chris Green)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sat, 30 Sep 2023 18:52:03 +0100
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 by: Chris Green - Sat, 30 Sep 2023 17:52 UTC

Theo <theom+news@chiark.greenend.org.uk> wrote:
> The Natural Philosopher <tnp@invalid.invalid> wrote:
> > Oh no, me mate and I wired the whole house to full CAT5/structured
> > cabling standards . BUT that isn't necessarily good enough for gigabit.
> > Cable might have too much attenuation.
>
> Many domestic installations don't get anywhere near the 305m that's the max
> in the ethernet spec. So you can get away with out of spec cabling because
> the spec expects the attenuation from 305m but you only have 30m.
>
> Try it and see? Patch a couple of ports together (without using a switch),
> put a machine at each end and see if a gigabit link will come up and stably
> pass traffic. You might be surprised.
>
Yes, my experience is that tens of metres of home made (by me) CAT5
UTP cable does gigabit quite happily.

--
Chris Green
·

Re: Pi as main storage and server.

<slrnuhh2do.840.jj@iridium.wf32df>

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From: jj...@franjam.org.uk (Jim Jackson)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sat, 30 Sep 2023 20:48:56 -0000 (UTC)
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 by: Jim Jackson - Sat, 30 Sep 2023 20:48 UTC

On 2023-09-29, Pancho <Pancho.Jones@proton.me> wrote:
>> 1/. How much power is used by the spinning rust, when most of the time
>> its idle? I find three figures quoted, active, idle and sleeping. Around
>> 6-7W active and a couple of watts spinning
>
> They require a lot of power to spin up. That pretty much dictates they
> cannot be powered from the rPi USB, even a 2.5" hdd requires a
> separately powered USB to SATA connector.

Not necessarily. I run USB powered 2.5in hard drives from raspberry
pi's. Some are the Western Digitial USB external drvies, and others are
run from USB powered USB-SATA converters.

I also run 3.5in sata drives - but then you do need powered USB <-> SATA.

Re: Pi as main storage and server.

<slrnuhh2h8.840.jj@iridium.wf32df>

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From: jj...@franjam.org.uk (Jim Jackson)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sat, 30 Sep 2023 20:50:48 -0000 (UTC)
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 by: Jim Jackson - Sat, 30 Sep 2023 20:50 UTC

On 2023-09-30, Chris Green <cl@isbd.net> wrote:
> Theo <theom+news@chiark.greenend.org.uk> wrote:
>> The Natural Philosopher <tnp@invalid.invalid> wrote:
>> > Oh no, me mate and I wired the whole house to full CAT5/structured
>> > cabling standards . BUT that isn't necessarily good enough for gigabit.
>> > Cable might have too much attenuation.
>>
>> Many domestic installations don't get anywhere near the 305m that's the max
>> in the ethernet spec. So you can get away with out of spec cabling because
>> the spec expects the attenuation from 305m but you only have 30m.
>>
>> Try it and see? Patch a couple of ports together (without using a switch),
>> put a machine at each end and see if a gigabit link will come up and stably
>> pass traffic. You might be surprised.
>>
> Yes, my experience is that tens of metres of home made (by me) CAT5
> UTP cable does gigabit quite happily.

And if it's cat5E then 100m or more works

Re: Pi as main storage and server.

<ufbbfk$1flpd$1@dont-email.me>

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 09:43:32 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Sun, 1 Oct 2023 08:43 UTC

On 30/09/2023 21:50, Jim Jackson wrote:
> On 2023-09-30, Chris Green <cl@isbd.net> wrote:
>> Theo <theom+news@chiark.greenend.org.uk> wrote:
>>> The Natural Philosopher <tnp@invalid.invalid> wrote:
>>>> Oh no, me mate and I wired the whole house to full CAT5/structured
>>>> cabling standards . BUT that isn't necessarily good enough for gigabit.
>>>> Cable might have too much attenuation.
>>>
>>> Many domestic installations don't get anywhere near the 305m that's the max
>>> in the ethernet spec. So you can get away with out of spec cabling because
>>> the spec expects the attenuation from 305m but you only have 30m.
>>>
>>> Try it and see? Patch a couple of ports together (without using a switch),
>>> put a machine at each end and see if a gigabit link will come up and stably
>>> pass traffic. You might be surprised.
>>>
>> Yes, my experience is that tens of metres of home made (by me) CAT5
>> UTP cable does gigabit quite happily.
>
> And if it's cat5E then 100m or more works

I am not sure what my longest run is. Could be around 50m
Anyway, 'fast enough and not power hungry enough' is my current feeling
on what I have

--
Ideas are more powerful than guns. We would not let our enemies have
guns, why should we let them have ideas?

Josef Stalin

Re: Pi as main storage and server.

<slrnuhictk.934.news-1513678000@a-tuin.ms.intern>

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From: news-151...@discworld.dascon.de (Michael Schwingen)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: 1 Oct 2023 08:54:12 GMT
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 by: Michael Schwingen - Sun, 1 Oct 2023 08:54 UTC

On 2023-09-30, Theo <theom+news@chiark.greenend.org.uk> wrote:
>> Oh no, me mate and I wired the whole house to full CAT5/structured
>> cabling standards . BUT that isn't necessarily good enough for gigabit.
>> Cable might have too much attenuation.
>
> Many domestic installations don't get anywhere near the 305m that's the max
> in the ethernet spec. So you can get away with out of spec cabling because
> the spec expects the attenuation from 305m but you only have 30m.

The limit is 100m for 100BaseT/1000BaseT. Cat5e is good enough for 100m
1000BaseT, and lower-quality cabling should work for shorter runs.

Standard 4-wire telephone cable (star quad) works for >30m 100BaseT,
although the standard requires Cat5, twisted pair cable.

cu
Michael
--
Some people have no respect of age unless it is bottled.

Re: Pi as main storage and server.

<ufbel2$1gdb0$1@dont-email.me>

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 10:37:37 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Sun, 1 Oct 2023 09:37 UTC

On 01/10/2023 09:54, Michael Schwingen wrote:
> On 2023-09-30, Theo <theom+news@chiark.greenend.org.uk> wrote:
>>> Oh no, me mate and I wired the whole house to full CAT5/structured
>>> cabling standards . BUT that isn't necessarily good enough for gigabit.
>>> Cable might have too much attenuation.
>>
>> Many domestic installations don't get anywhere near the 305m that's the max
>> in the ethernet spec. So you can get away with out of spec cabling because
>> the spec expects the attenuation from 305m but you only have 30m.
>
> The limit is 100m for 100BaseT/1000BaseT. Cat5e is good enough for 100m
> 1000BaseT, and lower-quality cabling should work for shorter runs.
>
I *think* 305m was 10baseT?
Mmm. no. it seems ALL twisted pair ethernet is characterised as 100m..it
must be a delay issue rather than attentuation when doing all nodes
traffic.

> Standard 4-wire telephone cable (star quad) works for >30m 100BaseT,
> although the standard requires Cat5, twisted pair cable.
>
Wash yer mouth out with soap...

--
In theory, there is no difference between theory and practice.
In practice, there is.
-- Yogi Berra

Re: Pi as main storage and server.

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From: Pancho.J...@proton.me (Pancho)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 10:49:16 +0100
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 by: Pancho - Sun, 1 Oct 2023 09:49 UTC

On 30/09/2023 15:03, The Natural Philosopher wrote:

>> Theo
> Oh no, me mate and I wired the whole house to full CAT5/structured
> cabling standards . BUT that isn't necessarily good enough for gigabit.
> Cable might have too much attenuation.
>

When I did mine, the problem I had was kinks in the wire, due to twist
from unrolling it badly, and the pulling it tight. Something about bend
radius. I found them and it is OK now.

Re: Pi as main storage and server.

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From: Pancho.J...@proton.me (Pancho)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 10:49:52 +0100
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 by: Pancho - Sun, 1 Oct 2023 09:49 UTC

On 30/09/2023 21:48, Jim Jackson wrote:
> On 2023-09-29, Pancho <Pancho.Jones@proton.me> wrote:
>>> 1/. How much power is used by the spinning rust, when most of the time
>>> its idle? I find three figures quoted, active, idle and sleeping. Around
>>> 6-7W active and a couple of watts spinning
>>
>> They require a lot of power to spin up. That pretty much dictates they
>> cannot be powered from the rPi USB, even a 2.5" hdd requires a
>> separately powered USB to SATA connector.
>
> Not necessarily. I run USB powered 2.5in hard drives from raspberry
> pi's. Some are the Western Digitial USB external drvies, and others are
> run from USB powered USB-SATA converters.
>
> I also run 3.5in sata drives - but then you do need powered USB <-> SATA.
>

Yes, sorry, I shouldn't have over generalized my own experience.

Nominally, the total power available from a rPi USB, for peripherals, is
enough. I couldn't get it to work, reliably, but others may have a
better power supply to the rPi and may have a lower power 2.5" HDD.

My HDD is old, taken out of a new laptop about 10 years ago. Back then
it was cheaper to buy a laptop with an HDD, and replace it with a SSD,
rather than just buy one with an SSD, for some bizarre reason?

So I had the HDD just lying around and repurposed it for the rPi, it's
been running for 4 years, as a NAS, which has exceeded my expectations.

Re: Pi as main storage and server.

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 11:17:08 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Sun, 1 Oct 2023 10:17 UTC

On 01/10/2023 10:49, Pancho wrote:
> On 30/09/2023 15:03, The Natural Philosopher wrote:
>
>>> Theo
>> Oh no, me mate and I wired the whole house to full CAT5/structured
>> cabling standards . BUT that isn't necessarily good enough for gigabit.
>> Cable might have too much attenuation.
>>
>
> When I did mine, the problem I had was kinks in the wire, due to twist
> from unrolling it badly, and the pulling it tight. Something about bend
> radius. I found them and it is OK now.
>
I got lots of that.
probably. But it all works at 100...

--
"A point of view can be a dangerous luxury when substituted for insight
and understanding".

Marshall McLuhan

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From: news-151...@discworld.dascon.de (Michael Schwingen)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: 1 Oct 2023 18:22:04 GMT
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 by: Michael Schwingen - Sun, 1 Oct 2023 18:22 UTC

On 2023-10-01, The Natural Philosopher <tnp@invalid.invalid> wrote:
>> The limit is 100m for 100BaseT/1000BaseT. Cat5e is good enough for 100m
>> 1000BaseT, and lower-quality cabling should work for shorter runs.
>>
> I *think* 305m was 10baseT?

No. For 10Base2, the limit was 185m, while 10Base5 (thick ethernet /
"yellow cable") could go up to 500m.

> Mmm. no. it seems ALL twisted pair ethernet is characterised as 100m..it
> must be a delay issue rather than attentuation when doing all nodes
> traffic.

There is both attenuation, as well as maximum round-trip time so that
collisions are properly detected everywhene on one segment.

>> Standard 4-wire telephone cable (star quad) works for >30m 100BaseT,
>> although the standard requires Cat5, twisted pair cable.
>>
> Wash yer mouth out with soap...

I would not install such an abomination, but if the wire is already in the
wall, it is worth a try. At my mother's house, it works just fine.

cu
Michael
--
Some people have no respect of age unless it is bottled.

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From: Pancho.J...@proton.me (Pancho)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 22:08:12 +0100
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 by: Pancho - Sun, 1 Oct 2023 21:08 UTC

On 01/10/2023 11:17, The Natural Philosopher wrote:
adius. I found them and it is OK now.
>>
> I got lots of that.
> probably. But it all works at 100...
>

Yeah, mine initially worked at 100 Mb/s, I untwisted the kinks, and then
it worked at 1Gb/s. Probably lesson 101 for professional cable layers,
but it confused me. I was thinking length, when it was just kinks.

Re: Pi as main storage and server.

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Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
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 by: TimS - Sun, 1 Oct 2023 21:46 UTC

On 01 Oct 2023 at 22:08:12 BST, "Pancho" <Pancho.Jones@proton.me> wrote:

> On 01/10/2023 11:17, The Natural Philosopher wrote:
> adius. I found them and it is OK now.
>>>
>> I got lots of that.
>> probably. But it all works at 100...
>
> Yeah, mine initially worked at 100 Mb/s, I untwisted the kinks, and then
> it worked at 1Gb/s. Probably lesson 101 for professional cable layers,
> but it confused me. I was thinking length, when it was just kinks.

You have to respect the bend radius. I said this to our Sparks and I think he
was impressed.

While I was a SLAC we were using some 10Base2, and one physics group managed
to screw up one of the segments. Their offices had been wired, but they
decided to extend the segment down to the experiment, without asking anyone.
And they used their quite thin 50-Ohm coax, which they normally used in patch
cords in their equipment. Well of course this was quite a long extension with
a consequent high DC impedance, which messed up the collision detection.

And this was not all. They had a quest to "tidy up". Now those who remember
10Base2 will recall that the cable would have a T-piece inserted in it at the
workstation location, and the T-piece was plugged into the ethernet socket on
the back of the w/s. These physicists didn't like this, as it meant the
segment entered their office and then left it again. So they moved the segment
and its T-piece out of the office, and connected a length of 50-ohm coax from
the T-piece, into the office and then connected that to the w/s. Much tidier.
This, it seems, messed up the cable impedance so they got lots of reflections
and packet loss.

--
Tim

Re: Pi as main storage and server.

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Sun, 1 Oct 2023 22:46:59 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Sun, 1 Oct 2023 21:46 UTC

On 01/10/2023 22:08, Pancho wrote:
> On 01/10/2023 11:17, The Natural Philosopher wrote:
> adius. I found them and it is OK now.
>>>
>> I got lots of that.
>> probably. But it all works at 100...
>>
>
> Yeah, mine initially worked at 100 Mb/s, I untwisted the kinks, and then
> it worked at 1Gb/s. Probably lesson 101 for professional cable layers,
> but it confused me. I was thinking length, when it was just kinks.

you do get reflections off kinks.

ANYWAY, no switch upgrade.

I have decided that a headless Pi4B with 1GB RAM and some powered SATA
cables will do the biz.

Big issue will be packaging, and Ive stretched the goodwill of the mate
with a 3D printer a bit far..I hate itzy bitsy usb wall warts, and stuff
in separate boxes...

--
Of what good are dead warriors? … Warriors are those who desire battle
more than peace. Those who seek battle despite peace. Those who thump
their spears on the ground and talk of honor. Those who leap high the
battle dance and dream of glory … The good of dead warriors, Mother, is
that they are dead.
Sheri S Tepper: The Awakeners.

Re: Pi as main storage and server.

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From: not...@telling.you.invalid (Computer Nerd Kev)
Subject: Re: Pi as main storage and server.
Newsgroups: comp.sys.raspberry-pi
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 by: Computer Nerd Kev - Mon, 2 Oct 2023 01:39 UTC

The Natural Philosopher <tnp@invalid.invalid> wrote:
> I have decided that a headless Pi4B with 1GB RAM and some powered SATA
> cables will do the biz.
>
> Big issue will be packaging, and Ive stretched the goodwill of the mate
> with a 3D printer a bit far..I hate itzy bitsy usb wall warts, and stuff
> in separate boxes...

So a case with room for two 3.5" HDDs, the Pi4B, and a built-in
PSU? 3D printing all that might stretch any friendship. Why
wouldn't you just bung it all in an old desktop PC case, with a PC
PSU left in to power the HDDs and manually wired up to power the
Pi4 (you'll need ground the standby signal wire to make the PSU
turn on)?

The powered aspect is what makes USB-SATA adapters more expensive.
Those that come without power supplies are dirt cheap on Ebay,
although the cheap ones might not be reliable (I can confirm that
they're Linux-friendly though).

--
__ __
#_ < |\| |< _#

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From: not...@telling.you.invalid (Computer Nerd Kev)
Subject: Re: Pi as main storage and server.
Newsgroups: comp.sys.raspberry-pi
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 by: Computer Nerd Kev - Mon, 2 Oct 2023 01:51 UTC

Computer Nerd Kev <not@telling.you.invalid> wrote:
> The powered aspect is what makes USB-SATA adapters more expensive.
> Those that come without power supplies are dirt cheap on Ebay,
> although the cheap ones might not be reliable (I can confirm that
> they're Linux-friendly though).

Well the USB2 ones are Linux-friendly anyway, I notice there are
now SATA-only USB3 ones. I was talking about the earlier 3-way
IDE/SATA ones, which are still available.
https://www.ebay.com.au/itm/374701594944

--
__ __
#_ < |\| |< _#

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From: news-151...@discworld.dascon.de (Michael Schwingen)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
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 by: Michael Schwingen - Mon, 2 Oct 2023 10:44 UTC

On 2023-10-02, Computer Nerd Kev <not@telling.you.invalid> wrote:
> Well the USB2 ones are Linux-friendly anyway, I notice there are
> now SATA-only USB3 ones. I was talking about the earlier 3-way
> IDE/SATA ones, which are still available.
> https://www.ebay.com.au/itm/374701594944

Be careful about size limits: some older adapters (and those supporting IDE
*may* use older chips) have limits regarding the disk size they support:

https://superuser.com/questions/308492/is-there-a-size-limit-on-external-usb-hard-drives

When buying new, I would recommend USB3 SATA-only.

I have not yet found any USB adapter that did not work under Linux.
However, some do support SMART and some do not.

cu
Michael
--
Some people have no respect of age unless it is bottled.

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Subject: Re: Pi as main storage and server.
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 by: druck - Mon, 2 Oct 2023 19:06 UTC

On 30/09/2023 11:25, The Natural Philosopher wrote:
> On 29/09/2023 22:21, Jim Jackson wrote:
>> Does 3 years and counting of 24/7 mean I've killed my Pi :-)
>> My Pi powers a USB connected 2.5 spinning disk just fine.
>
> I think the answer would be 'it depends on the drive and if linux is
> configured to spin down on idle' .
> You are in effect powering an electric motor and the more friction there
> is and the more rpms you want it to do. in general, the more power it
> will need

2.5 inch drives will spin themselves down automatically as they are
aimed at laptops, or I should say were, given everything has a SSD these
days.

I used to use my ASUS router which had a USB3 port to attach a drive to
work as a HOME NAS, but when the Pi 4B came out with gigabit Ethernet
and USB3, I moved it over to that as it was much faster and allowed
Linux friendly NFS as well as SMB.

The drives I've been using are Samsung M3 and later sold as Maxtor M3
USB3 drives, instead of being SATA drives in a USB caddy these just have
USB interfaces so are very low power and spin down quite quickly.

I've recently replaced it with a Samsung T7 portable USB SSD, which
eliminates the slight spin up delay every time you access the shared
drive. The Maxtor M3 is now on another Pi 4B as a nightly backup to the
SSD, and the original Samsung M3 on a Pi 3B is a weekly off site backup.

My Pi 4Bs are all in cases and I use 40mm rather than 30mm fans to keep
these cool and quiet.

---druck

Re: Pi as main storage and server.

<uff5bm$32fdh$2@dont-email.me>

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From: new...@druck.org.uk (druck)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Mon, 2 Oct 2023 20:23:34 +0100
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 by: druck - Mon, 2 Oct 2023 19:23 UTC

On 30/09/2023 17:22, Theo wrote:
> The Natural Philosopher <tnp@invalid.invalid> wrote:
>> Oh no, me mate and I wired the whole house to full CAT5/structured
>> cabling standards . BUT that isn't necessarily good enough for gigabit.
>> Cable might have too much attenuation.

Very old Cat5 is dodgy, but 5e is normally fine for short runs.

> Many domestic installations don't get anywhere near the 305m that's the max
> in the ethernet spec. So you can get away with out of spec cabling because
> the spec expects the attenuation from 305m but you only have 30m.
>
> Try it and see? Patch a couple of ports together (without using a switch),
> put a machine at each end and see if a gigabit link will come up and stably
> pass traffic. You might be surprised.

Good advice to check each segment individually, as I wasn't getting
gigabit across the house in both directions, but found it was due to one
cable that had been kinked too hard and lost a pair. Ironically was a
short bit of still shiny new cable, not the 30m segment of older very
much used looking wire which had been bent around lots of corners in my
old house. Replacing that 5m section gave me ~970mbs each way.

---druck

Re: Pi as main storage and server.

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Tue, 3 Oct 2023 09:11:19 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Tue, 3 Oct 2023 08:11 UTC

On 02/10/2023 20:23, druck wrote:
> Good advice to check each segment individually, as I wasn't getting
> gigabit across the house in both directions, but found it was due to one
> cable that had been kinked too hard and lost a pair. Ironically was a
> short bit of still shiny new cable, not the 30m segment of older very
> much used looking wire which had been bent around lots of corners in my
> old house. Replacing that 5m section gave me ~970mbs each way.

Many years ago, we had sent an engineer down to the London office of a
Prestigious Accountancy Firm that oddly enough ceased to exist
overnight* some years later, to install an ISDN router to Connect Them
To The Internet.

We got a furious call from a junior executive threatening legal action
if we didn't come down this minute and fix it, because it didn't fucking
work. In a big organisation if you have been tasked with something and
it stops working it's such a blot on your copybook that its career
threatening. One reason why I hate big companies personally.

As technical director, I went down with my best engineer to sort it out.
The BT engineer had already arrived, and we spoke to him 'stupid cunt'
he said. 'There's some sort of wiring fault inside the building, I've
checked it at the router and its fucked, but it's fine at the
termination point where it enters the building, so it's not my problem,
and its now chargeable'. And he wandered off to whatever dimensions BT
engineers go to when not active., I suspect like cats, they simply
inhabit a different universe...

The Junior Executive was still in a bad temper 'Its all right, you can
go now' (another hour and a half on tube and train) '*I* have found the
fault' (he couldn't find his own arse). 'And what was it? We enquired
sweetly. He took us to a steel cupboard where he had insisted the
router be installed, and pointed to the cable, practically sliced in
half by the person who have closed the door on a trailing ISDN lead
casually routed across the office floor.

A we left I asked my engineer, 'who laid that cable?' ' He did. The ONLY
thing he did do - I will never work in a place like that even if I would
get three times the money you pay me'.

Oh yes, wiring issues are no stranger...

*2002. Enron. Google it

--
For every complex problem there is an answer that is clear, simple, and
wrong.

H.L.Mencken

Re: Pi as main storage and server.

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From: new...@druck.org.uk (druck)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Tue, 3 Oct 2023 12:07:03 +0100
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 by: druck - Tue, 3 Oct 2023 11:07 UTC

On 03/10/2023 09:11, The Natural Philosopher wrote:
> On 02/10/2023 20:23, druck wrote:
> Many years ago, we had sent an engineer down to the London office of a
> Prestigious Accountancy Firm that oddly enough ceased to exist
> overnight* some years later, to install an ISDN router to Connect Them
> To The Internet.

[snip]

> *2002. Enron. Google it

That would be a _creative_ accountancy firm. :-)

---druck

Re: Pi as main storage and server.

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Tue, 3 Oct 2023 12:18:08 +0100
Organization: A little, after lunch
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 by: The Natural Philosop - Tue, 3 Oct 2023 11:18 UTC

On 03/10/2023 12:07, druck wrote:
> On 03/10/2023 09:11, The Natural Philosopher wrote:
>> On 02/10/2023 20:23, druck wrote:
>> Many years ago, we had sent an engineer down to the London office of a
>> Prestigious Accountancy Firm that oddly enough ceased to exist
>> overnight* some years later, to install an ISDN router to Connect Them
>> To The Internet.
>
> [snip]
>
>> *2002. Enron. Google it
>
> That would be a _creative_ accountancy firm. :-)
>
They were at one point my previous firms accountants. They told us how
to break the law and make a lot of money. By 'dressing' the company
accounts prior to flotation.

A bit like El Trump is accused of these days.

Really, if he was a democrat no one would have cared.

> ---druck
>

--
"The most difficult subjects can be explained to the most slow witted
man if he has not formed any idea of them already; but the simplest
thing cannot be made clear to the most intelligent man if he is firmly
persuaded that he knows already, without a shadow of doubt, what is laid
before him."

- Leo Tolstoy

Re: Pi as main storage and server.

<slrnuho6s1.934.news-1513678000@a-tuin.ms.intern>

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From: news-151...@discworld.dascon.de (Michael Schwingen)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
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 by: Michael Schwingen - Tue, 3 Oct 2023 13:47 UTC

On 2023-10-02, druck <news@druck.org.uk> wrote:
>
> Very old Cat5 is dodgy, but 5e is normally fine for short runs.

According to the standards, Cat5e is sufficient for 1000BaseT over the full
100m - if it is properly installed and not damaged.

cu
Michael
--
Some people have no respect of age unless it is bottled.

Re: Pi as main storage and server.

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From: tnp...@invalid.invalid (The Natural Philosopher)
Newsgroups: comp.sys.raspberry-pi
Subject: Re: Pi as main storage and server.
Date: Tue, 3 Oct 2023 17:18:53 +0100
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 by: The Natural Philosop - Tue, 3 Oct 2023 16:18 UTC

On 03/10/2023 14:47, Michael Schwingen wrote:
> On 2023-10-02, druck <news@druck.org.uk> wrote:
>>
>> Very old Cat5 is dodgy, but 5e is normally fine for short runs.
>
> According to the standards, Cat5e is sufficient for 1000BaseT over the full
> 100m - if it is properly installed and not damaged.
>
> cu
> Michael
I dunno what I installed back in the day. 2001? whatever was current then

Hmm on the cusp between 5 and 5e.

--
Canada is all right really, though not for the whole weekend.

"Saki"

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