Windows Cluster fails

I’ve got a cluster with 2 IBM servers and a SCSI disk storage connected to both servers. This servers are W2000 Advanced Server with SP4 installed, and SQL Server 2000.It has 2 disks (RAID 0) for data and 2 disks (RAID 0) for Quorum.
Since I’ve installed this cluster it fails. Each 15 days appears error disks that can ve solved running a chkdsk over the disks, data and quorum are corrupted. IBM has checked all the configuration and connections and the hardware seems to be right.
does anybody has seen or knows something about it? I’m desperate because I haven’t found anything about this.

Many thanks