Prentice Bisbal wrote:
Greg Lindahl wrote:
On Thu, Dec 03, 2009 at 10:40:12AM -0500, Prentice Bisbal wrote:
if a single node goes down, you need to take down all the
nodes in the chassis before you can remove the dead node. Not very
practical.
Eh? What's so hard about marking the other nodes as unusable in your
batch system, and waiting for them to become free?
-- greg
I didn't say it was hard - just impractical. ;)
I thought the same thing when HP told me the nodes weren't
hot-swappable. But then when I learned the SuperMicros were hot
swappable, I figured if SuperMicro can do it, why not HP?
I'm sure you'll agree that taking just one node down instead of 4 is
more convenient, and is less likely to draw the ire of your
number-crunchers.
Because of our ill-advised choice of a specific APC rack, whenever I've
got to remove one of the supermicro's from the 2uTwin chassis, I have to
power 'em all off. I then have to ease the chassis out so I've enough
room to get a node out. I learned to "just do it" after a 2 month whine-in.
gerry
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