We have three RHCS 4/GFS clusters set up for various tiers of storage, attached to a FC SAN. I will be adding additional workloads to these clusters and updating to RHEL5, and would like advice and thoughts on various designs. In the current configuration, there are 2 nodes per cluster with 4GB RAM each. I will be taking this to a minimum of 3 nodes per cluster. Two clusters (1st Tier and Backup) serve 1 SAMBA share each with approximately 1x2TB chunk of SAN stroage. The other cluster hosts 13 SAMBA shares with a mix of standard FC (1x6TB,2X1TB) and FC-SATA (10x2TB). The nodes all run low on memory, and occasionally run out of memory and cause problems where the entire cluster needs to be rebooted. As I add additional storage, I am debating if I should go with 1 large cluster per tier of storage, or seperate clusters for each application, per tier. There is an obvious cost advantage to one large cluster, where I could use a few failover nodes for the entire cluster, instead of each individual cluster having its own failover nodes. On the downside, any change could potentially bring down the entire cluster, and therefore the tier for every application. My ideal option would be to have a set of failover servers that participate in every cluster. Does RHCS support a single server or set of servers shared between different clusters? I think you are limited to failover domains in a single cluster. Does anyone have experience/advice with a similar setup? Also, any suggestions on RAM would be nice, so I can prevent the servers from running low on memory. The file sizes range from a few KB, to a few hundred MB. The total number of files and directories in the largest filesystem is 1,883,912 files, with approx. 50,000 directories off the root filesystem. Thanks Danny Wall ##################################### This message is for the named person's use only. It may contain confidential, proprietary, or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it, and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Health First reserves the right to monitor all e-mail communications through its networks. Any views or opinions expressed in this message are solely those of the individual sender, except (1) where the message states such views or opinions are on behalf of a particular entity; and (2) the sender is authorized by the entity to give such views or opinions. ##################################### -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
