On Wed, 10 Nov 1999 bentele@mtu-friedrichshafen.com wrote:
we also had a ' isp2100_timeout]: Resetting ISP2100 in slot ..' a few weeks ago. F740 , DOT 5.2.3, FC-AL 18 GB, Gbit Card.
!! Be careful !!
Replacing motherboard and FC-Adapter-Card at last solved the problem, after we replaced all cables, all shelves of this loop, and about 3 disks.
I think there is a known (but perhaps not widely acknowledged) problem with the on-board FC-AL interface on the F740 motherboards (and possibly on other models as well). I have four F740's in production, of which two have had histories of flaky FC-AL (ISP2100 timeouts during disk scrubs, hung RAID reconstructions, simultaneous errors across all drives on a shelf, etc.). Netapp has sent up four slot-based FC-AL adapters and told me to use those instead of the on-board ones.
Another shipment of four F740's arrived earlier this week, and I noticed they came with two slot-based FC-AL adapters each (these are clustered systems). I take that as an indication that Netapp still believes there is some sort of defect on the F740 motherboards.