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<html lang="en"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta charset="UTF-8"><meta name="copyright" content="(C) Copyright 2023"><meta name="DC.rights.owner" content="(C) Copyright 2023"><meta name="DC.type" content="concept"><meta name="description" content="Mediatrix units running a Virtual Machine are equipped with various sizes of Solid State Drive (SSD) for storage."><meta name="prodname" content="Mediatrix Units Using a Virtual Machine"><meta name="version" content="DGW 49.12.28842941"><meta name="platform" content="All"><meta name="DC.date.modified" content="2023-0308-2809"><meta name="DC.date.issued" content="2023-0308-2809"><meta name="DC.date.available" content="2023-0308-2809"><meta name="ChapterNumbering" content="no"><meta name="DC.format" content="HTML5"><meta name="DC.identifier" content="concept_uf1_t4g_sy"><link href="https://fonts.googleapis.com/css?family=Open+Sans" rel="stylesheet"><link rel="stylesheet" type="text/css" href="https://documentation.media5corp.com/download/attachments/45482024/commonltr.css"><link rel="stylesheet" type="text/css" href="https://documentation.media5corp.com/download/attachments/45482024/custom.css"><title>Monitoring the Lifespan of an SSD</title></head><body><header role="banner"><div class="topicmeta title">Monitoring the Lifespan of an SSD </div><div class="topicmeta date">2023-0308-28<09</div><div class="topicmeta product">Mediatrix Units Using a Virtual Machine </div><div class="topicmeta version">DGW 49.12.2884<2941</div><div class="topicmeta pdf"><a href="https://documentation.media5corp.com/download/attachments/45482024/Monitoring%20the%20lifespan%20of%20the%20Virtual%20Machine%20SSD.pdf" rel="nofollow">Download PDF Document</a></div><hr><span style="float: inline-end;"></span></header><nav role="toc"><ul><li><a href="#concept_uf1_t4g_sy">SSD Lifespan</a></li><li><a href="#concept_fkp_4sg_sy">SSD Lifespan Extrapolation </a><ul><li><a href="#task_lfq_tqg_sy">Monitoring the SSD Wear Percentage Using the CLI</a></li><li><a href="#task_ar4_wrg_sy">Monitoring the SSD Wear Percentage Using a MIB Browser</a></li></ul></li><li><a href="#concept_v4k_q3h_1r">DGW Documentation</a></li><li><a href="#concept_fqm_rv4_k4">Copyright Notice</a></li></ul></nav><main role="main"><article role="article" aria-labelledby="ariaid-title1"><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="nested0" aria-labelledby="ariaid-title1" id="concept_uf1_t4g_sy">
<h1 class="title topictitle1" id="ariaid-title1">SSD Lifespan</h1>
<div class="body conbody"><p class="shortdesc">Mediatrix units running a Virtual Machine are equipped with various sizes of Solid State
Drive (SSD) for storage.</p>
<p class="p">A Solid State Drive (SSD) is a form of flash-based storage. Media5 uses high quality,
enterprise grade SSDs in its products. However due to its technical nature, flash memory can
handle so many read/write cycles. Beyond that, the performance may degrade or in extreme cases,
the drive may fail. For customers using a Mediatrix unit running a Virtual Machine, special
attention should be paid to the number of writes caused by the Operating System running in the
virtual machine, as well as by the application. If the Virtual Machine is not optimised, it will
lead to excessive read/write access to the SSD, and hence significantly reduce the lifespan of
the SSD. For more details, please refer to <a class="xref" href="https://documentation.media5corp.com/display/DGWPREVIOUS/Technical+Bulletins" target="_blank">Technical Bulletins - Virtual machine installation</a>
published on the <a class="xref" href="https://documentation.media5corp.com/" target="_blank">Media5 Documentation Portal</a>.</p>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested0" aria-labelledby="ariaid-title2" id="concept_fkp_4sg_sy">
<h1 class="title topictitle1" id="ariaid-title2">SSD Lifespan Extrapolation </h1>
<div class="body conbody"><p class="shortdesc">SSD lifespan can be extrapolated and Virtual Machine optimisation can be validated. </p>
<p class="p">For example, let the virtual machine run for a month (or a week), read and compare the
<span class="keyword parmname">WearPercentage</span> parameter at different times during this interval. Use
the collected information to extrapolate the lifespan. </p>
<p class="p">For example: the Wear Percentage increased from 19% to 20% in 2 months. Take the remaining
80% divided by a monthly increase of 0.5% gives 160 months left. Therefore at least 13 years
left at the current increase rate.</p>
<div class="p">If the lifespan does not meet the expectations, you may consider further optimisation
measures e.g.: <ul class="ul" id="concept_fkp_4sg_sy__ul_ctd_gtg_sy">
<li class="li">disable some of the logging</li>
<li class="li">log to an external device</li>
<li class="li">assign more RAM to the Virtual Machine</li>
<li class="li">consider ordering a bigger SSD for future installations</li>
</ul></div>
</div>
<hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title3" id="task_lfq_tqg_sy">
<h2 class="title topictitle2" id="ariaid-title3">Monitoring the SSD Wear Percentage Using the CLI</h2>
<div class="body taskbody">
<section id="task_lfq_tqg_sy__steps_fcb_zqg_sy"><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps" id="task_lfq_tqg_sy__steps_fcb_zqg_sy"><li class="li step">
<span class="ph cmd">Open the Command Line Interface ( CLI).</span>
</li><li class="li step">
<span class="ph cmd">At the prompt, enter the following command:
<span class="keyword cmdname">Dcm.PersistentWearPercentage</span></span>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>This parameter will provide the Wear Percentage of the SSD. It is taken from the
SMART data obtained directly from the drive. When it reaches 100%, it means the
technical lifespan of the SSD has been reached. The drive may not fail immediately, but
this indicates that the SSD must be replaced to ensure continuous operation.</section>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic task nested1" aria-labelledby="ariaid-title4" id="task_ar4_wrg_sy">
<h2 class="title topictitle2" id="ariaid-title4">Monitoring the SSD Wear Percentage Using a MIB Browser</h2>
<div class="body taskbody">
<section class="section context"><div class="tasklabel"><strong class="sectiontitle tasklabel">Context</strong></div>
<p class="p">The Mediatrix UMN Mib browser can be used for this procedure.</p>
</section>
<section id="task_ar4_wrg_sy__steps_wr5_1sg_sy"><div class="tasklabel"><strong class="sectiontitle tasklabel">Steps</strong></div><ol class="ol steps" id="task_ar4_wrg_sy__steps_wr5_1sg_sy"><li class="li step stepexpand">
<span class="ph cmd">Open your Mib Browser.</span>
</li><li class="li step stepexpand">
<span class="ph cmd">Poll
<span class="keyword cmdname">.1.3.6.1.4.1.4935.1000.100.200.100.2000.1.10000.100.250</span></span>
<div class="itemgroup info">
<div class="note note note_note"><span class="note__title">Note:</span> This is an SNMP (readonly) Mib. </div>
</div>
</li></ol></section>
<section class="section result"><div class="tasklabel"><strong class="sectiontitle tasklabel">Result</strong></div>This parameter will provide the Wear Percentage of the SSD. It is taken from the
SMART data obtained directly from the drive. When it reaches 100%, it means the
technical lifespan of the SSD has been reached. The drive may not fail immediately, but
this indicates that the SSD must be replaced to ensure continuous operation.</section>
</div>
</article></article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested0" aria-labelledby="ariaid-title5" id="concept_v4k_q3h_1r">
<h1 class="title topictitle1" id="ariaid-title5">DGW Documentation</h1>
<div class="body conbody"><p class="shortdesc">Mediatrix devices are supplied with an exhaustive set of documentation. </p>
<p class="p">Mediatrix user documentation is available on the <a class="xref" href="http://documentation.media5corp.com" target="_blank">Media5 Documentation
Portal</a>.</p>
<div class="p">Several types of documents were created to clearly present the information you are looking for.
Our documentation includes:<ul class="ul" id="concept_v4k_q3h_1r__ul_bqy_cjh_1r">
<li class="li"><strong class="ph b">Release notes</strong>: Generated at each GA release, this document includes the known and
solved issues of the software. It also outlines the changes and the new features the release
includes.</li>
<li class="li"><strong class="ph b">Configuration notes</strong>: These documents are created to facilitate the configuration of a
specific use case. They address a configuration aspect we consider that most users will need to
perform. However, in some cases, a configuration note is created after receiving a question
from a customer. They provide standard step-by-step procedures detailing the values of the
parameters to use. They provide a means of validation and present some conceptual information.
The configuration notes are specifically created to guide the user through an aspect of the
configuration. </li>
<li class="li"><strong class="ph b">Technical bulletins</strong>: These documents are created to facilitate the configuration of a
specific technical action, such as performing a firmware upgrade.</li>
<li class="li"><strong class="ph b">Hardware installation guide</strong>: They provide the detailed procedure on how to safely and
adequately install the unit. It provides information on card installation, cable connections,
and how to access for the first time the Management interface.</li>
<li class="li"><strong class="ph b">User guide</strong>: The user guide explains how to customise to your needs the configuration
of the unit. Although this document is task oriented, it provides conceptual information to
help the user understand the purpose and impact of each task. The User Guide will provide
information such as where and how TR-069 can be configured in the Management Interface, how to
set firewalls, or how to use the CLI to configure parameters that are not available in the
Management Interface.</li>
<li class="li"><strong class="ph b">Reference guide</strong>: This exhaustive document has been created for advanced users. It
includes a description of all the parameters used by all the services of the Mediatrix units.
You will find, for example, scripts to configure a specific parameter, notification messages
sent by a service, or an action description used to create Rulesets. This document includes
reference information such as a dictionary, and it does not include any step-by-step
procedures. </li>
</ul></div>
</div>
</article><hr><span style="float: inline-end;"><a href="#">Top</a></span><article class="topic concept nested0" aria-labelledby="ariaid-title6" id="concept_fqm_rv4_k4">
<h1 class="title topictitle1" id="ariaid-title6">Copyright Notice</h1>
<div class="body conbody"><p class="shortdesc">Copyright © 2023 Media5 Corporation.</p>
<p class="p">This document contains information that is proprietary to Media5 Corporation.</p>
<p class="p">Media5 Corporation reserves all rights to this document as well as to the Intellectual Property
of the document and the technology and know-how that it includes and represents.</p>
<p class="p">This publication cannot be reproduced, neither in whole nor in part, in any form whatsoever,
without written prior approval by Media5 Corporation.</p>
<p class="p">Media5 Corporation reserves the right to revise this publication and make changes at any time
and without the obligation to notify any person and/or entity of such revisions and/or
changes.</p>
</div>
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