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October 12, 2005
3510 expansion
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This is a technical entry; so don't complain to me if you don't understand it.
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We've had these 3510's we've been using at appropriate times. One of those times was to store security camera data on. Well as you can imagine the space requirements are quite high on that type of system. I was told the other day..."We're outta space" Now what? No more PCI slots for more HBA's ( at $2000 a piece ) Well I knew you can daisy chain the 3510's together, but never seen it done let alone done it myself.
So off to docs.sun.com ( a great resource for their stuff.... DUH!! )
Anyway I started reading up on the docs and found that I don't need regular controllers, I needed JBOD controllers on the array to be daisy chained. Luckily we have 4 of them sitting on shelves from when we had single controller configs ( dumb dumb dumb )
I grabbed a couple of them stuck them in the 3510 ran interconnects, re-booted the parent array and taaaa daaa I could see the disks on the other array!!! Way cool. So I was able to double the amount of space given to the sec. cams.
Now for some cool un-tested info on the 3510's. It would appear you can create a logical drive containing disks on different 3510's. What does that do you may ask? Well not much, other than less logical drives. It doesn't hurt nor hinder performance. The other cool thing, is it looks like you can use a single global spare drive on one of the arrays, and it will take over for the disk on a different array. What does that do for me you may ask? 70 free gigs of disk space. I didn't do it this way on the current config. I used a global spare on each array. Reason being... "un-tested" so maybe I'll have time to test this type of thing down the road.
Posted by knabet at October 12, 2005 01:33 PM