We have Lotus Domino Server 7.0.2 FP1 with 150 users collaborating with a big (30GB) common nsf file (CommC.nsf).The problem is that lotus performs really slow above 60-70 users.
Availability index is approx. 20% average, but there are a lot of times that it is stuck to 0%.
The server runs SUSE LINUX ENTERPRISE SERVER 9.0 SP3 (2.6 kernel) with Dual Intel Xeon 3.2 GHz, 8GB RAM and 1 EMC RAID 10 system.
The system’s statistics show that “update” process is usually on D state which is “Uninterruptible sleep (usually IO)”, but the RAID array utilization is low. So the process isn’t sleeping due to disk bottlenecks.
We have replaced our EMC with a Hitachi Raid system on a try and buy bases with 8 disks Raid 10 and 3Gbytes cashe but still the problem of low availability exists. Now we are thinkig that this is the end of line for us for Domino and looking to migrate to other platform. We have return the Hitachi since we have not seen any better availability index.
Do you have any opinions/suggestions to check?
Thank You
Nicolas Chrissakis