Retrieving EMC and Qlogic Fiber WWN on RHEL

Introduction So you need to add storage to a RHEL (RedHat Enterprise Linux) server and the storage guy has asked you for the WWN.  The question next is how do I get the WWN off my server? So how do we get QLogic and EMC WWN’s on RHEL. It is a lot easier than one might think. Let’s move forward and get the WWN information we need! Qlogic First identify your installed or recognized, this is... read more

How to List the TDEV Members of a META on VMAX

Introduction So you have created a META and have come to a point where you need to know what TDEV are a member. Either need it for reclaiming of space or any other option.In this post we will explore several commands to get the information you are looking for. Get META Members from a META First list all the meta’s that are in use on the VMAX and look for the device you are interested in getting data... read more

How To Use Consistent_Lun setting on VMAX Initiator Groups

Introduction Using the consistent_lun setting we eliminate the issue where different devices show different lun id’s. This is more prevalent with ESX Hosts. For this to work the flag must be set at creation time of the host and parent initiator groups.  In this post we will cover how to complete the task. Step 1 – Create Host Initiator Groups The first step is to create the host initiator... read more

How to Remove a TDEV on EMC VMAX

Introduction So you are doing some cleanup on your VMAX and need to remove a few TDEV volume’s in a Storage Pool and want to free this space to create a new volume or expand an existing volume. In this post we will detail how to delete a single TDEV volume in a Storage Group. An example of such a configuration is in the case where a single TDEV was mapped and used as a dedicated server volume with... read more

How To Remove a Device Tag on a Recoverpoint TDEV

Learned a new tidbit today on removing device tags on EMC VMAX and RecoverPoint. Before you can reclaim a TDEV you must first remove the Device Tag. Overview In this post we will cover how to remove the device tag, disable write access, un-map, un-bind the device and dissolve the meta on EMC VMAX that is using Recoverpoint   Remove the Device Tag First get the tag information: $ symdev -sid... read more

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