I have a few ex server ST9500530NS hdd's here but they won't power up via USB.
Been told that they will work in a direct PC computer situation as they need both 5v & 12v rails.

Apples for Apples, how would they compare to other std mechanical 2.5" sata hdd's for performance/ reliability etc.
Even comparing them to 3.5" Sata hdds'

mrfxit - 2021-02-02 16:07:00

badly compared to ssds, its on the 'low end' page

https://www.harddrivebenchmark.net/hdd.php?hdd=Seagate%20ST9
500530NS&id=8632

king1 - 2021-02-02 16:13:00

Mechanical drives just can't compete with ssd for read/write/seek speeds.

Ps: nice benchmark page

Edited by nice_lady at 4:23 pm, Tue 2 Feb

nice_lady - 2021-02-02 16:20:00

With the SSD drived rating at 24-33000 and that ST9500530NS under 700....... Probably a respectable mechanical drive tho....

Edited by nice_lady at 4:28 pm, Tue 2 Feb

nice_lady - 2021-02-02 16:27:00

You might have to start a Vintage Computing Club.

Kinda like the Vintage Car Club but you tinker away with old tech that is nearly useless in the modern world.

sw20 - 2021-02-02 16:32:00

Duh well of course they can't compare to SSDs, thats a totally different technology.

I was asking about where this model would sit compared to std 2.5" sata hdds

I would presume for a start that they would have a potentially far longer lifespan.

mrfxit - 2021-02-02 16:37:00

king1 wrote:

badly compared to ssds, its on the 'low end' page

https://www.harddrivebenchmark.net/hdd.php?hdd=Seagate%20ST9
500530NS&id=8632

Thanks, thats a good start but needs to include std sata hdd's
All those in the list are SSD which is a pretty poor comparison

Edited by mrfxit at 4:40 pm, Tue 2 Feb

mrfxit - 2021-02-02 16:38:00

Ok, bit more digging on the passmark site shows they are comparable to most others of the same type & size, so whats the advantage of 12v rail +5v rail compare to just a 5v rail as per most of the 2.5" sata hdd's

mrfxit - 2021-02-02 16:48:00

Did you try one of these usb hdd adapters below?

https://www.trademe.co.nz/computers/cables-adaptors/usb/list
ing-2961433004.htm?rsqid=8650f4449ccf48408fc2e81336481166-00
1

Apparently if you need more power you plug both usb plugs in.

" * Double USB connectors for no need of external power to support HDD
==> NOTE: When lack of power, please plug the additional USB connector to the computer."

muppet_slayer - 2021-02-02 16:51:00

Apparently won't work on any std usb.
They need both 5v AND 12v supplies.
Std USB is strictly 5v

mrfxit - 2021-02-02 16:53:00

mrfxit wrote:

Apparently won't work on any std usb.
They need both 5v AND 12v supplies.
Std USB is strictly 5v

The adapter I have shown you has 2 usb plugs. You plug the fat lead usb in and if that is not enough power you plug the 2nd usb plug in to give it more power. 5v+5v = 10v but that might be enough to power the hdds up. Might be worth a go for only 10 or so dollars. I have one here but I haven't needed to plug both in as yet.

muppet_slayer - 2021-02-02 16:59:00

muppet_slayer wrote:

The adapter I have shown you has 2 usb plugs. You plug the fat lead usb in and if that is not enough power you plug the 2nd usb plug in to give it more power. 5v+5v = 10v but that might be enough to power the hdds up. Might be worth a go for only 10 or so dollars. I have one here but I haven't needed to plug both in as yet.

Yea nah sorry.
They don't work that way, they work by doubling (ish) the amps available over both plugs.
I used to get that problem with some old 2.5" IDE & early Sata hdds where they would spin up not wouldn't be readable.
2nd usb plug was used to increase the overall Amps available, the real trick was to use one plug on a front port & the second on a back port = different m/b supply rails.

Std usb2, 5v amps per rail is about 500ma.
Usb3 amps is about 900ma

Edited by mrfxit at 5:31 pm, Tue 2 Feb

mrfxit - 2021-02-02 17:28:00

mrfxit wrote:

Ok, bit more digging on the passmark site shows they are comparable to most others of the same type & size, so whats the advantage of 12v rail +5v rail compare to just a 5v rail as per most of the 2.5" sata hdd's

Yeah sounds about right, they're only 7200rpm drives so were never meant for high performance (back when people cared about disk performance server disks were in the 14000rpm range)

vtecintegra - 2021-02-02 17:48:00

mrfxit wrote:

Yea nah sorry.
They don't work that way, they work by doubling (ish) the amps available over both plugs.
I used to get that problem with some old 2.5" IDE & early Sata hdds where they would spin up not wouldn't be readable.
2nd usb plug was used to increase the overall Amps available, the real trick was to use one plug on a front port & the second on a back port = different m/b supply rails.

Std usb2, 5v amps per rail is about 500ma.
Usb3 amps is about 900ma

Ahhhh I see. Thanks for clearing that up.

muppet_slayer - 2021-02-02 18:38:00

muppet_slayer wrote:

Ahhhh I see. Thanks for clearing that up.

No worries.
It's one of those things that if you had never needed to find out, most ppl would never know anyway.

mrfxit - 2021-02-03 08:08:00

mrfxit is right tho I guess it's possible they could be wired to provide 10v but that's not how they're made.

nice_lady - 2021-02-03 08:21:00

So realistically, with PCs that have the right room/ attachments to suit a 2.5" hdd, then those would be a good alternative swap for a 3.5" hdd in there.
Appears to be the same-ish performance but built solider.

mrfxit - 2021-02-03 19:02:00