>> On Tue, 4 Apr 2006 10:14:50 -0700, Andrew Carlson <[EMAIL PROTECTED]> said:
> The speed of the random access disk pools is phenomenally better than > the file device class - not sure why though When you're writing to DISK pools, writes round-robin through the volumes. This is usually better for the underlying disk subsystem than lots of serial writes. (at least it's been so for all my disk subsystems). > It takes alot of time to predefine the volumes. We were finding it > took about 19 hours to predefine 2TB. We were able to run 8 of > those, so it ended up taking 19 hours to predefine 16TB, but that is > still a long time. I don't get the predefined volumes bit; don't see how it could be a win. My FILE strategy has been 10-20GB files, in profusion. This keeps individual operations sane in length. > My plan is to move data off of random access volumes on the weekends to > help prevent fragmentation. If you're using DISK as a temporary holding pool, I'd expect fragmentation to be irrelevant. For permanent storage, however, It'd be huge. - Allen S. Rout
