12 May
2004
12 May
'04
5:03 p.m.
We currently have a FAS940C cluster. Each of the FAS940 has 2 DS14 shelves of 36 GB drives and 1 DS14 shelf of 72 GB drives (a total of 6 shelves). Each of the FAS940 has only 1 FC dual-channel Host Adapter:
slot 4: FC Host Adapter 4a (Dual-channel, QLogic 2312 rev. 2, 64-bit, L-port, <UP>)
We are trying to isolate some performance problem we are encourtering. How do we find out if the host adapter is the bottleneck? Does anyone have a formula for calculating how many drives can be put on a single loop without losing performance. Thanks.
Derek