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Are SAS cables hot-pluggable?

 
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Marcin.Trzyna
Occasional Advisor

‎10-20-2009 05:26 AM

‎10-20-2009 05:26 AM

Are SAS cables hot-pluggable?

Hello,

I realize that this question seems trivial, but I’m really not sure and I would like to ask for a definitive advice.

Are SAS cables connecting external storage (e.g. MSA50) to serial Smart Array Controllers (e.g. P800) hot–pluggable? I mean two factors here: safety of the electronics and ability of the controller to recognize and properly serve new SAS/SATA topology that will result after plugging-in or unplugging the disk enclosure; let’s not discuss coping with the change on the side of the operating system here.

Regards,

Marcin
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Amol Garge
Trusted Contributor

‎10-20-2009 08:05 AM

‎10-20-2009 08:05 AM

Re: Are SAS cables hot-pluggable?

SAS is not hot plug neither at the device end nor at the host end.
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Marcin.Trzyna
Occasional Advisor

‎10-30-2009 02:35 PM

‎10-30-2009 02:35 PM

Re: Are SAS cables hot-pluggable?

If it is not hot-pluggable, the question is why? Will it harm hardware or won't just the controller be unable to recognize new device topology?
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Torsten.
Acclaimed Contributor

‎10-30-2009 03:06 PM

‎10-30-2009 03:06 PM

Solution

Re: Are SAS cables hot-pluggable?

The MSA70 user manual says:

"Ensure that the servers attached to the enclosure are powered down and power cords are
disconnected before connecting SAS cables."

A clear message.

Hope this helps!
Regards
Torsten.

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