Digital Transformation . API . Integration . IAM

Hello everyone, In this post I am going to share one of my experience with respect to usage of SAN storage in enterprise grade deployment of Oracle SOA Suite. However, this concept  is common across any of the enterprise grade deployment. Once I got an opportunity to do the production grade deployment of oracle soa suite 12c where I was asked regarding the SAN (Storage Area network) storage usage. I wasn't aware about the different storages and their requirement. I did some research and came to know that storage is a-one of the most critical component in production deployment. This is why because we have different kind of data and different needs of accessing the same, e.g. we can have media files, image files, backup files, system files and the archived files etc. Below table gives the high level overview of different storage requirements and available options - S. No  Requirement to store  Recommended Storage 1  System files , boot volume, applicatio...

My this post is focused on the recent issue faced during usage of SAN storage for setting up Oracle SOA Suite 12c in a clustered environment. Below is the summary of the same- I have two VMs, SOAHOST1 & SOAHOST2 for setting up SOA Cluster. I have exposed a SAN storage capacity of 500GB on both VMs. Using fdisk utility in linux, the disk was formatted using the XFS file system with the assumption that Linux 7 uses XFS file system so SAN disk to be used with this VM should also have the same file system. Now I mounted the SAN disk /dev/xvdc  on both VMs and able to access the storage from both VMs successfully. Problem Statement- Although the storage was mounted on both VMs but parallel Read/Write was not visible i.e. data written by one VM on SAN was not visible at second VM until the storage is refreshed (by remounting the SAN or restarting the VM) Storage got detached abruptly and causing Input/Output error on the mount point on either one or both VMs...