Expert Oracle Exadata - Parent Directory

CHAPTER 8 CONFIGURING EXADATAExadata Database Machine Name: This parameter can be 1–4 characters inlength and is used to generate network host names for network endpoints inyour Exadata frame. It is also used to name the RAC cluster and the SimpleClient Access Name (SCAN) required by RAC. For example, a machine name ofexa produces a cluster name of ‘exa_cluster’ and a SCAN name of exascan.ourcompany.com.This parameter is case-sensitive for all but the disk groupname postfix, if any, in which case it is forced to uppercase. The followinglisting shows the management network host names generated for the databaseservers and storage cells in a quarter rack configuration. In step 2, we’ll take alook at a complete listing of the names prefixed with the machine name for aquarter rack configuration.# Management Networkexadb01.ourcompany.com exadb01exadb02.ourcompany.com exadb02exacel01.ourcompany.com exacel01exacel02.ourcompany.com exacel02exacel03.ourcompany.com exacel03If there is a chance you will ever have more than one Exadata system in your data center,consider enumerating your machine name to provide uniqueness. For example a machinename of exa1 allows for future systems to be named exa2, exa3, and so on.Type of System: The type of system determines how many compute nodes andstorage cells are in your configuration. This field is presented as a drop-downlist, illustrated in Figure 8-2.Figure 8-2. The Type of System drop-downThis parameter is used to determine how many compute nodes and storagecells your system has when generating IP addresses and host names. We’ll talkmore about this later, in the “Network Settings” section, but OneCommandgenerates sequential IP addresses by starting with a base address for the firsthost and then incrementing from that address for each host. For example, ifyour management IPs start at 192.168.8.201, then the following IP addresseswill be generated for the compute nodes and storage cells in a quarter rack.192.168.8.201 exadb01.ourcompany.com192.168.8.202 exadb02.ourcompany.com192.168.8.203 exacel01.ourcompany.com192.168.8.204 exacel02.ourcompany.com192.168.8.205 exacel03.ourcompany.com244