this post was submitted on 30 Nov 2023
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Data Hoarder

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We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.

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SAS expander options (alien.top)
submitted 9 months ago by [email protected] to c/[email protected]
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I have an Unraid system with 14 drives in the NAS, and a DAS with 8 drives connected.

Currently I have 6 drives in NAS connected via motherboard sata, and the other 8 via a pcie to sata card.

I then have an 8e HBA in IT mode connected to a SFF-8087 to SFF-8088 adapter in the DAS, connecting to the 8 drives.

I am changing the motherboard and CPU, and stupidly brought a motherboard with only 4 sata, 1 x pcie x16, and 1 pcie x4.

Is there a SAS expander I could get, along with an internal HBA, that could connect to the internal drives of the NAS, and then have external ports to go to the DAS? I looked at the Adaptec 82885T, and apparently the 2 external ports are input only. Would it maybe better to get 2 of those, 1 in NAS, and 1 in the DAS, and use my current HBA 8e to connect to them both?

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[–] [email protected] 1 points 9 months ago

You could simply get a LSI 9200-4e4i - the 4e is the 8088, that'll go to your DAS. The 4i is the 8087, you could connect that to a SAS expander internally to get more HDDs connected internally. I've bought from jiawen2018 on eBay..like..at least 5 times, all good quality gear.. eBay item # 142620883440 would be suitable (under USD$30). Just need a 8087-8087 cable to connect HBA to expander.