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bpsarg2021-08-30 17:35:00
Hard disks
bpsarg, 2021-08-30 17:35:00

How to connect more than 4 disks to an old SAS controller?

Hello. There is an old piece of iron LSISAS3041E-R
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In the specification the possibility of connection to 122 disks is declared. How to implement this from 4 SATA ports on board?

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3 answer(s)
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Zettabyte, 2021-08-30
@Zettabyte

Declared the ability to connect up to 122 drives. How to implement it

Set aside half an hour to google various phrases that include the words "expander" and "backplane".
This is what you need both in terms of hardware and in terms of knowledge. If you have never worked with such equipment before, then at least the basics are definitely worth figuring out, otherwise there may be unpleasant surprises later.
You need to buy the necessary pieces of iron used on eBay, Avito, trash, etc.
old SAS controller

Be sure to pay attention to this KB article, because. it also applies to your board: https://www.broadcom.com/support/knowledgebase/121...
If a drive larger than two TeraBytes in capacity is used with an LSI 3Gb/s SATA+SAS HBA, you will not be able to use the remaining capacity beyond 2TB .

I would not really rely on the bold part of the quote, and by default I thought that disks larger than 2 TB could not be used. If you still want to take the risk, then you must first conduct a thorough check of the behavior with large disks.
Otherwise, you will definitely become our client , and taking into account for which RAIDs such pieces of iron are usually used, and what damage is expected, even with an unpredictable outcome.
Also note that I think you have a RAID controller, they usually work differently from HBAs.

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awsswa159, 2021-08-30
@awsswa159

sata expander

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Puma Thailand, 2021-08-31
@opium

sas have strips with splitters, usually they are immediately installed in the server, but you can buy separately

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