Hello, I'm looking for input on how to best provison multiple LDOMs suitable for Oracle database workloads onto a T4-4 Server.
I'm trying to understand how to best partition CPU's to what I belive would be two service domains, and 4 Oracle database guest domains. Some of the design considerations are the following: Solaris 10 8/11; ZFS root and data filesystems; EMC PowerPath; IPMP w/VLAN tagging; Sun Cluster to allow oracle instance failover to other T4-4 domain. In order to provide maximum serviceability, I belive I'll need to have the 6 domains per physical server: - 1 control (primary) domain to provide ldom admin, FC and Network I/O virtual device service domains for PCI0; - 1 I/O service domain to provide FC and Network I/O virtual device services for PCI1; - 4 guest domains for Oracle database workloads. I don't think the primary domain should also serve as a oracle database domain as well. I know it can, but the quesion is should it? If there are two service domains, how many CPU's per I/O service domain should be poached from a particular CPU in order to service it is recommended? I'm thinking 1 core per service domain (CPU0/C0 & CPU2/C0, for the service ldoms) may be suitable. Thoughts? What considerations should be made for provisoning the OS root disks for each Guest Domain? WIth a T4-4 with 8X100GB SSDs, any opinions on how best to provision the 6 domains? ie: One large zpool with os disks carved out? or a zpool per pair of disks, or a zpool out of a pair of disk for service domains, and another 6 disk zpool to service the guest domains, or perhaps direct i/o for disks.. there seems to be many options.. just looking for recommendations on this. I can't seem to find a best practice on this. Any and all help appreciated. Thanks!
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