ATTO Celerity HBAs on QLogic switches

[Shane Sokolosky]

Hello Ben,

If your using both 2Gb storage and 4Gb storage you’ll want to keep the speed at Automatic, although if your using it with only 4Gb fibre channel devices then I’d hard set it to 4Gb, as for the IO stream gaurd, you’ll need to set it to on for all ports that initiators (HBA / Computers) are pluged into and turn it off on all the ports that the storage is pluged into.

Shane Sokolosky
Circuit Access

Email – heysomthin@aol.com
Phone – (714) 599-1611

[Ben Cheng]

Hi Shane,

Thanks for your advice.

Here’s what I did,

I/O Stream Guard (for XServe RAID) – Disable
I/O Stream Guard (for ATTO HBA) – Enable

Device Scan (for XServe RAID) – Enable
Device Scan (for ATTO HBA) – Disable

Port Type (for XServe RAID) – F
Port Type (for ATTO HBA) – Auto

So far, testing went fine.

I like to check if the XServe RAID driver 1.0 is required on Mac OS X 10.4.8?
Hope you can advice me its function as well.

Cheers
Ben

[Shane Sokolosky]

Actually it depends on the version of OS you installed originally, but if it’s in software update then go for it, the one thing you’ll want to watch out for on the X Serve RAID that can lead to drop frames is not allowing host cache flushing
here’s an article about it from apple.
https://docs.info.apple.com/article.html?artnum=302780

Shane Sokolosky
Circuit Access

Email – heysomthin@aol.com
Phone – (714) 599-1611