What’s New in vSphere 4.1 – VAAI and Hidden 4th Primative
Intriguing blogpost title?
I’m hoping your wondering – hey, Mike what on earth is a “primative”. What is the fourth one, and why is it hidden. Well, it’s all about how VAAI was meant to have 4 components. And there are. But folks are just being quite quiet about the 4 component.
I think this a little-mini-scoop, and I’m hoping it will set me apart from the other guys (who I know and respect greatly) Anyway,
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July 18th, 2010 at 1:10 am
Disclosure – EMCer here.
Hey Mike,
Primitives are used in SCSI communications…
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A SCSI “Primitive” is used for a variety of signaling and handshaking functions, and perform most of the low-level, time-critical functions.
SCSI Frames perform the high-level functions on a serial bus by carrying commands, data, status, and configuration information.
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Cheers,
Denis Guyadeen
July 18th, 2010 at 7:50 pm
For what it’s worth, I liked it better when I didn’t have to register for membership to a site to read your articles. A shame this stuff isn’t posted in its entirety on RTFM.
July 27th, 2010 at 1:02 pm
Hi Mike and Denis,
Does it means that a SCSI “Primitive” is called by vmkernel to update the Metadata via scsi-reservations?
Thanks,
Jose Maria Gonzalez