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  • Optimizing Utilization of Additional Disk Space on NetScaler VPX


    Ravi Shekhar
    • Validation Status: Validated
      Summary: NetScaler VPX's default storage capacity is 20GB. Discover a strategy to optimize storage by utilizing the extra disk for folders that consume excessive space in this article
      Has Video?: No

    NetScaler VPX 's storage allocation is pivotal and contingent upon your sizing estimations. By default, it offers a standard storage capacity of 20GB.

    If your data storage needs surpass this limit, attaching an additional disk becomes essential. This extra disk typically defaults to the /var/crash path, intended for storing heavy core-dumps and crash files.

    Yet, various folders within /var, such as nsinstall, nstrace, log etc., often contribute to space consumption, potentially impacting storage availability.

    In this article, we unveil an easy yet effective strategy to optimize storage by leveraging the additional disk for folders that might consume excessive space.

    In this article, we will give you a simple hack on how to utilize the additional disk for any folder that may consume more space.

    Key Considerations:
    • Evaluate and estimate storage needs before attaching an extra disk.
    • For NetScaler VPX deployments, we recommend using solid-state drive (SSD) technology.

    Step by Step Guide

    In this example, we bring you the detailed instructions on mapping the /var/log folder to the additional disk on a NetScaler VPX instance running on an ESXi hypervisor has been provided. 

    Step 1 - Shut down the NetScaler VPX virtual machine (if running) from the hypervisor management console

    Step 2 - Add a new virtual hard disk
    image.thumb.png.27876e54c4c75e59e03d72a192e0d1ed.png

    Step 3 - Power on the virtual machine

    Step 4 - The new virtual disk will be mounted at /var/crash after NetScaler VPX  boots up. 
    Please note that the mounted partition will be slightly smaller than the actual virtual disk size

    image.thumb.png.d720ad940771fe2eaa3693be89f30695.png

    Step 5 - Create a new directory within /var/crash that will later replace the existing directory from your NetScaler VPX

    image.thumb.png.07123a1076431fc08477e31d9299ac5f.png

    Step 6 - Use the new disk for storing all log files, you can create the log directory inside /var/crash

    Step 7 - Copy/move all files recursively from the old directory (/var/log/) to new directory (/var/crash/log/)


    Step 8 - Once the file operation has completed, delete the old directory (eg., /var/log/) and create a symlink at it's place pointing to the new directory (/var/crash/log/)

    image.thumb.png.ab6d601f700f2e67129fb6d6415b962d.png

    Step 9 - Now the NetScaler ADC VPX will use the newly added disk for all files stored inside this directory

    In a similar way, multiple directories can be created inside /var/crash following the same method each mapped to a different directory path on the system (/root, /var/core, etc.)


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