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Groups > uk.comp.homebuilt > #60725
| From | "Jeff Gaines" <jgnewsid@outlook.com> |
|---|---|
| Newsgroups | uk.comp.homebuilt |
| Subject | Re: Hardware RAID |
| Date | 2026-08-04 10:09 +0000 |
| Message-ID | <xn0pt4chijsft31017@news.individual.net> (permalink) |
| References | (3 earlier) <R0x*qw9MA@news.chiark.greenend.org.uk> <xn0pt3a15itisqt015@news.individual.net> <hhc*IpeNA@news.chiark.greenend.org.uk> <xn0pt47otjlxdj8016@news.individual.net> <114s4h7$1v5g5$1@dont-email.me> |
On 04/08/2026 in message <114s4h7$1v5g5$1@dont-email.me> SH wrote: >On 04/08/2026 08:07, Jeff Gaines wrote: >>On 03/08/2026 in message <hhc*IpeNA@news.chiark.greenend.org.uk> Theo >>wrote: >> >>>Jeff Gaines <jgnewsid@outlook.com> wrote: >>>> >>>>Can I follow up on this. The unit arrived today and has only 2 x SATA >>>>power outputs. The two cables have 4 x SATA sockets on each, ironic as >>>>that is what I had so much trouble finding for the Seasonic. >>>> >>>>The relevant spec is: >>>> >>>>DC Output Rail Ratings >>>>+5V: 20A (Max 110W) >>>>+3.3V: 20A (Max 110W) >>>>+12V: 70.8A (Max 850W) >>>>+5Vsb: 3A (Max 15W) >>>> >>>>Can you calculate from that if I can safely run all 4 3.5" Iron Wolf >>>>(5,400 RPM) from one cable and should I run two from each? >>> >>>According to the datasheet: >>>https://www.seagate.com/content/dam/seagate/migrated-assets/www- >>>content/datasheets/pdfs/ironwolf-12tb-emea-DS1904-21-2207GB-en_GB.pdf >>> >>>average power is 4-10W per drive. It doesn't give a 5/12V split, but >>>probably that's mostly from 12V. So for 4 drives max power is 40W, P=IV >>>so >>>Imax = 40/12 = 3.33A. A SATA power connector (ie the connector on the >>>end >>>of the extension) is rated at 1.5A per pin, and each voltage has 3 pins, >>>so >>>rating is max 4.5A. >>> >>>You should be fine. >>> >>>Actually, the 4TB drives are 4-5W per drive so you can halve the current >>>requirements. Still fine. >>> >>>Theo >> >>Many thanks Theo :-) >> >>New build day today while my aircon if fitted in the lounge. >> > >with all those hard drives, PSUs, CPUs, no wonder you need air con! :-) :-) -- Jeff Gaines Dorset UK I was standing in the park wondering why Frisbees got bigger as they get closer. Then it hit me.
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Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-02 11:38 +0000
Re: Hardware RAID Theo <theom+news@chiark.greenend.org.uk> - 2026-08-02 13:35 +0100
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-02 13:57 +0000
Re: Hardware RAID Theo <theom+news@chiark.greenend.org.uk> - 2026-08-02 15:37 +0100
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-02 16:49 +0000
Re: Hardware RAID Theo <theom+news@chiark.greenend.org.uk> - 2026-08-03 12:27 +0100
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-03 17:52 +0000
Re: Hardware RAID Theo <theom+news@chiark.greenend.org.uk> - 2026-08-03 23:00 +0100
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-04 07:07 +0000
Re: Hardware RAID SH <i.love@spam.com> - 2026-08-04 08:31 +0100
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-04 10:09 +0000
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-04 11:38 +0000
Re: Hardware RAID Andy Burns <usenet@andyburns.uk> - 2026-08-02 13:45 +0100
Re: Hardware RAID Theo <theom+news@chiark.greenend.org.uk> - 2026-08-02 14:46 +0100
Re: Hardware RAID "Jeff Gaines" <jgnewsid@outlook.com> - 2026-08-02 14:03 +0000
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