Unix, Linux, DevOps , Cloud computing and BigData Knowledge-Base

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Hands on Lab – Replacing Failed Disks from ZFS Pools ( Simple / Mirrored / RaidZ )

    In our earlier post ( To get Started with ZFS ) , yogesh discussed about various ZFS pool and file system Operations. In this post I will be demonstrating the redundancy capability for different ZFS pools and also the recovery procedure from the disk failure scenarios....

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SAN Storage Configuration – Solaris 10 with native multipathing and veritas volume manager

  Here you go with the procedure to configure SAN ( EMC ) storage with native multipathing and veritas volume manager. You dont need to go with complete procedure in a single read, because it has different tasks involved and the procedure was well implemented on...

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Setup iSCSI storage on Celerra

Below are the steps to setup ISCSI on Celerra   Step:1 Validate network interface on data mover server_ifconfig server_2 -all Step:2 Create and mount a file system called iSCSI nas_fs -n iscsi -c size=100G pool=clar_r5_performance server_mount server_2 iscsi /iscsi Step:3 Create the celerra iSCSI target server_iscsi...

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Solaris Troubleshooting : Calculate TCP retransmission rate using netstat

This post explains you the information on the TCP retransmission measurement using netstat -s for Solaris. A system with a high retransmission rate indicates network congestion and can cause network oriented applications (like web servers) to operate slowly. Procedure to Calculate TCP retransmission rate: TCP expects acknowledgments from...

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Solaris 10 Troubleshooting : Check the Integrity of libraries and critical files

Installing or uninstalling a patch intends to perform 3 main functions: file updates, file additions, and file removals. – File updates update the existing files installed on disk via scripts or add the patch files to replace the existing files installed on disk. – File additions...

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