Cannot replace broken hard drive with LSI HBA

Michael Fuckner michael at fuckner.net
Tue Sep 29 18:04:47 UTC 2015


On 9/29/2015 3:51 PM, InterNetX - Juergen Gotteswinter wrote:
>  From my Experience using SATA Disks on SAS Controllers, no matter if
> theres an Expander between or not or mixed, those Setups keep on beeing
> flakey / unreliable. I might work under certain conditions, but its
> nothing you can bet on.
>
> Garret Damore (Illumos Project) describes the problem more detailed here
>
> http://garrett.damore.org/2010/08/why-sas-sata-is-not-such-great-idea.html
>

come on, the article is 5 years old, some things changed since then!

- MUX Boards are unreliable and expensive- long time since I last saw 
those boards
- SAS Disks are not just 10/15k high performance Disks anymore, most 
Nearline Disks are available with native SAS interface as well
- if you pick the right disk there is no trouble using SATA Disks on SAS 
Expanders or SAS Controllers (they should have R/V sensors, optimized 
FW...).
- if you use desktop drives in a shelf with lets say 24 slots you should 
not expect it to work ;-)

Regards,
  Michael!


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