Free Windows Help Tutorials sponsored by inkjet printer cartridges dot org /title> <META HTTP-EQUIV="imagetoolbar" CONTENT="no"> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=ISO 8859-1"> <META name="description" Content="Hundreds of downloadable Windows help tutorials, articles and how-to guides sponsored by inkjet printer cartridges dot org."><style type="text/css">  </style> </head> <body bgcolor=#999999 vlink=blue link=blue> <span name = "INTRA" class="pg" style="top:0px; left:5px; width:802px; height:1097px"></span> <span name = "INTRA" style='top:0px; left:5px; height:1097px; width:802px' class='img'> <img src="pg0001im.png" height = "1097 width = "802" border="0"> </span> <span class='nav' style='left: 10px; top: 10px'><pre></pre></span><span name = "INTRA" style='top:94px; left:648px' class="ft6"><pre><font face='Helvetica'>Novell:Storage</font></pre></span> <span name = "INTRA" style='top:152px; left:193px' class="ft3"><pre><font face='Arial'><b>How To Mirror Or</b></font></pre></span> <span name = "INTRA" style='top:202px; left:130px' class="ft3"><pre><font face='Arial'><b>Duplex With NetWare 4</b></font></pre></span> <span name = "INTRA" style='top:319px; left:214px' class="ft4"><pre><font face='Arial'><i>Murdoch Mactaggart offers some tips on setting up hard </i></font></pre></span> <span name = "INTRA" style='top:343px; left:228px' class="ft4"><pre><font face='Arial'><i>disk mirroring and duplexing on a NetWare 4 server.</i></font></pre></span> <span name = "INTRA" style='top:392px; left:121px' class="ft0"><pre><font face='Arial'><b>U</b></font></pre></span> <span name = "INTRA" style='top:396px; left:158px' class="ft1"><pre><font face='Arial'>sers have come to learn the</font></pre></span> <span name = "INTRA" style='top:396px; left:316px' class="ft1"><pre><font face='Arial'>under $300 each while the E IDE capa </font></pre></span> <span name = "INTRA" style='top:396px; left:511px' class="ft1"><pre><font face='Arial'>adapter fails while the second con </font></pre></span> <span name = "INTRA" style='top:408px; left:158px' class="ft1"><pre><font face='Arial'>hard way the iron rule of</font></pre></span> <span name = "INTRA" style='top:408px; left:316px' class="ft1"><pre><font face='Arial'>bility of supporting four drives allows</font></pre></span> <span name = "INTRA" style='top:408px; left:511px' class="ft1"><pre><font face='Arial'>tinues working normally.</font></pre></span> <span name = "INTRA" style='top:420px; left:158px' class="ft1"><pre><font face='Arial'>backups: the hard drive will</font></pre></span> <span name = "INTRA" style='top:420px; left:316px' class="ft1"><pre><font face='Arial'>a standard system to support some 3.5</font></pre></span> <span name = "INTRA" style='top:420px; left:525px' class="ft1"><pre><font face='Arial'>In the rest of this article I use the</font></pre></span> <span name = "INTRA" style='top:432px; left:121px' class="ft1"><pre><font face='Arial'>fail completely, just before the long de </font></pre></span> <span name = "INTRA" style='top:432px; left:316px' class="ft1"><pre><font face='Arial'>GB of mirrored data at an additional</font></pre></span> <span name = "INTRA" style='top:432px; left:511px' class="ft1"><pre><font face='Arial'>term "mirror" to refer indiscriminately</font></pre></span> <span name = "INTRA" style='top:444px; left:121px' class="ft1"><pre><font face='Arial'>layed backup procedure is finally im </font></pre></span> <span name = "INTRA" style='top:444px; left:316px' class="ft1"><pre><font face='Arial'>hardware cost of less than $600.</font></pre></span> <span name = "INTRA" style='top:444px; left:511px' class="ft1"><pre><font face='Arial'>to both mirroring and to duplexing ex </font></pre></span> <span name = "INTRA" style='top:456px; left:121px' class="ft1"><pre><font face='Arial'>plemented.</font></pre></span> <span name = "INTRA" style='top:456px; left:511px' class="ft1"><pre><font face='Arial'>cept where both mechanisms are being</font></pre></span> <span name = "INTRA" style='top:468px; left:135px' class="ft1"><pre><font face='Arial'>Fortunately, far fewer businesses</font></pre></span> <span name = "INTRA" style='top:470px; left:316px' class="ft2"><pre><font face='Arial'><i><b>Mirroring Or Duplexing?</b></i></font></pre></span> <span name = "INTRA" style='top:468px; left:511px' class="ft1"><pre><font face='Arial'>compared.</font></pre></span> <span name = "INTRA" style='top:480px; left:121px' class="ft1"><pre><font face='Arial'>now trust to luck or run only casual or</font></pre></span> <span name = "INTRA" style='top:480px; left:525px' class="ft1"><pre><font face='Arial'>Up to eight partitions can be mir </font></pre></span> <span name = "INTRA" style='top:492px; left:121px' class="ft1"><pre><font face='Arial'>occasional backups. With the steadily</font></pre></span> <span name = "INTRA" style='top:492px; left:330px' class="ft1"><pre><font face='Arial'>Drives are amazingly reliable given</font></pre></span> <span name = "INTRA" style='top:492px; left:511px' class="ft1"><pre><font face='Arial'>rored together although, in practice, it</font></pre></span> <span name = "INTRA" style='top:504px; left:121px' class="ft1"><pre><font face='Arial'>falling cost of tape drives and backup</font></pre></span> <span name = "INTRA" style='top:504px; left:316px' class="ft1"><pre><font face='Arial'>the complexity of the engineering in </font></pre></span> <span name = "INTRA" style='top:504px; left:511px' class="ft1"><pre><font face='Arial'>would be adequate to mirror only one</font></pre></span> <span name = "INTRA" style='top:516px; left:121px' class="ft1"><pre><font face='Arial'>tapes, with steadily growing through </font></pre></span> <span name = "INTRA" style='top:516px; left:316px' class="ft1"><pre><font face='Arial'>volved. Yet they do fail, sometimes</font></pre></span> <span name = "INTRA" style='top:516px; left:511px' class="ft1"><pre><font face='Arial'>pair.</font></pre></span> <span name = "INTRA" style='top:528px; left:121px' class="ft1"><pre><font face='Arial'>put and tape capacity and with the</font></pre></span> <span name = "INTRA" style='top:528px; left:316px' class="ft1"><pre><font face='Arial'>catastrophically and at the most incon </font></pre></span> <span name = "INTRA" style='top:540px; left:121px' class="ft1"><pre><font face='Arial'>relative ease of implementing sche </font></pre></span> <span name = "INTRA" style='top:540px; left:316px' class="ft1"><pre><font face='Arial'>venient moment, more usually subtly</font></pre></span> <span name = "INTRA" style='top:542px; left:511px' class="ft2"><pre><font face='Arial'><i><b>Requirements</b></i></font></pre></span> <span name = "INTRA" style='top:552px; left:121px' class="ft1"><pre><font face='Arial'>duled backups over network systems,</font></pre></span> <span name = "INTRA" style='top:552px; left:316px' class="ft1"><pre><font face='Arial'>and with localised data loss which</font></pre></span> <span name = "INTRA" style='top:564px; left:121px' class="ft1"><pre><font face='Arial'>matters have improved considerably.</font></pre></span> <span name = "INTRA" style='top:564px; left:316px' class="ft1"><pre><font face='Arial'>might not immediately be noticed.</font></pre></span> <span name = "INTRA" style='top:564px; left:525px' class="ft1"><pre><font face='Arial'>Both internal and external hard</font></pre></span> <span name = "INTRA" style='top:576px; left:135px' class="ft1"><pre><font face='Arial'>The situation in a related area of</font></pre></span> <span name = "INTRA" style='top:576px; left:330px' class="ft1"><pre><font face='Arial'>Mirroring and duplexing are fun </font></pre></span> <span name = "INTRA" style='top:576px; left:511px' class="ft1"><pre><font face='Arial'>drives can be mirrored. The former can</font></pre></span> <span name = "INTRA" style='top:588px; left:121px' class="ft1"><pre><font face='Arial'>security, that of mirroring hard drives</font></pre></span> <span name = "INTRA" style='top:588px; left:316px' class="ft1"><pre><font face='Arial'>damentally the same process whereby</font></pre></span> <span name = "INTRA" style='top:588px; left:511px' class="ft1"><pre><font face='Arial'>have only NetWare partitions while in </font></pre></span> <span name = "INTRA" style='top:600px; left:121px' class="ft1"><pre><font face='Arial'>on PC networks, is not as well ad </font></pre></span> <span name = "INTRA" style='top:600px; left:316px' class="ft1"><pre><font face='Arial'>data on one drive partition, designated</font></pre></span> <span name = "INTRA" style='top:600px; left:511px' class="ft1"><pre><font face='Arial'>ternal drives can hold other partitions</font></pre></span> <span name = "INTRA" style='top:612px; left:121px' class="ft1"><pre><font face='Arial'>vanced. Yet mirroring drives is very</font></pre></span> <span name = "INTRA" style='top:612px; left:316px' class="ft1"><pre><font face='Arial'>as the primary, is duplicated on a sec </font></pre></span> <span name = "INTRA" style='top:612px; left:511px' class="ft1"><pre><font face='Arial'>as well. This means that you can only</font></pre></span> <span name = "INTRA" style='top:624px; left:121px' class="ft1"><pre><font face='Arial'>straightforward and the cost is trivial</font></pre></span> <span name = "INTRA" style='top:624px; left:316px' class="ft1"><pre><font face='Arial'>ond drive. NetWare handles this as a</font></pre></span> <span name = "INTRA" style='top:624px; left:511px' class="ft1"><pre><font face='Arial'>use internal drives if you want to hold</font></pre></span> <span name = "INTRA" style='top:636px; left:121px' class="ft1"><pre><font face='Arial'>compared with the security offered.</font></pre></span> <span name = "INTRA" style='top:636px; left:316px' class="ft1"><pre><font face='Arial'>background task and ensures that in</font></pre></span> <span name = "INTRA" style='top:636px; left:511px' class="ft1"><pre><font face='Arial'>off site NetWare ready drive sets for</font></pre></span> <span name = "INTRA" style='top:648px; left:135px' class="ft1"><pre><font face='Arial'>While SCSI drives remain relatively</font></pre></span> <span name = "INTRA" style='top:648px; left:316px' class="ft1"><pre><font face='Arial'>the event of failure of the primary</font></pre></span> <span name = "INTRA" style='top:648px; left:511px' class="ft1"><pre><font face='Arial'>mixed OS use.</font></pre></span> <span name = "INTRA" style='top:660px; left:121px' class="ft1"><pre><font face='Arial'>expensive they tend to be used in areas</font></pre></span> <span name = "INTRA" style='top:660px; left:316px' class="ft1"><pre><font face='Arial'>drive, processing continues without in </font></pre></span> <span name = "INTRA" style='top:660px; left:525px' class="ft1"><pre><font face='Arial'>Occasionally, and particularly with</font></pre></span> <span name = "INTRA" style='top:672px; left:121px' class="ft1"><pre><font face='Arial'>where higher budgets prevail and</font></pre></span> <span name = "INTRA" style='top:672px; left:316px' class="ft1"><pre><font face='Arial'>terruption using the duplicate data on</font></pre></span> <span name = "INTRA" style='top:672px; left:511px' class="ft1"><pre><font face='Arial'>IDE systems, drives from different</font></pre></span> <span name = "INTRA" style='top:684px; left:121px' class="ft1"><pre><font face='Arial'>where there is more concern for per </font></pre></span> <span name = "INTRA" style='top:684px; left:316px' class="ft1"><pre><font face='Arial'>the secondary drive.</font></pre></span> <span name = "INTRA" style='top:684px; left:511px' class="ft1"><pre><font face='Arial'>manufacturers may not work happily</font></pre></span> <span name = "INTRA" style='top:696px; left:121px' class="ft1"><pre><font face='Arial'>formance and for security. However,</font></pre></span> <span name = "INTRA" style='top:696px; left:330px' class="ft1"><pre><font face='Arial'>Where drives are mirrored they</font></pre></span> <span name = "INTRA" style='top:696px; left:511px' class="ft1"><pre><font face='Arial'>together in the same machine. This is</font></pre></span> <span name = "INTRA" style='top:708px; left:121px' class="ft1"><pre><font face='Arial'>very substantial numbers of file servers</font></pre></span> <span name = "INTRA" style='top:708px; left:316px' class="ft1"><pre><font face='Arial'>share the same adapter or controller</font></pre></span> <span name = "INTRA" style='top:708px; left:511px' class="ft1"><pre><font face='Arial'>less of a problem than formerly but it</font></pre></span> <span name = "INTRA" style='top:720px; left:121px' class="ft1"><pre><font face='Arial'>in small businesses and in depart </font></pre></span> <span name = "INTRA" style='top:720px; left:316px' class="ft1"><pre><font face='Arial'>channel. Where the duplicate drives</font></pre></span> <span name = "INTRA" style='top:720px; left:511px' class="ft1"><pre><font face='Arial'>may nevertheless be sensible to choose</font></pre></span> <span name = "INTRA" style='top:732px; left:121px' class="ft1"><pre><font face='Arial'>mental network systems are now fitted</font></pre></span> <span name = "INTRA" style='top:732px; left:316px' class="ft1"><pre><font face='Arial'>are on different channels they are</font></pre></span> <span name = "INTRA" style='top:732px; left:511px' class="ft1"><pre><font face='Arial'>identical models for mirroring. Simi </font></pre></span> <span name = "INTRA" style='top:744px; left:121px' class="ft1"><pre><font face='Arial'>with enhanced IDE drives in the range</font></pre></span> <span name = "INTRA" style='top:744px; left:316px' class="ft1"><pre><font face='Arial'>referred to as "duplexed".</font></pre></span> <span name = "INTRA" style='top:744px; left:511px' class="ft1"><pre><font face='Arial'>larly, choosing identical models of</font></pre></span> <span name = "INTRA" style='top:756px; left:121px' class="ft1"><pre><font face='Arial'>of 1 to 1.7 GB, sometimes singly and</font></pre></span> <span name = "INTRA" style='top:756px; left:330px' class="ft1"><pre><font face='Arial'>Duplexing gives slightly greater</font></pre></span> <span name = "INTRA" style='top:756px; left:511px' class="ft1"><pre><font face='Arial'>adapter for duplexing will help mini </font></pre></span> <span name = "INTRA" style='top:768px; left:121px' class="ft1"><pre><font face='Arial'>sometimes in pairs.</font></pre></span> <span name = "INTRA" style='top:768px; left:316px' class="ft1"><pre><font face='Arial'>protection in that it allows recovery in</font></pre></span> <span name = "INTRA" style='top:768px; left:511px' class="ft1"><pre><font face='Arial'>mise the variables to be considered in</font></pre></span> <span name = "INTRA" style='top:780px; left:135px' class="ft1"><pre><font face='Arial'>Such drives typically cost well</font></pre></span> <span name = "INTRA" style='top:780px; left:316px' class="ft1"><pre><font face='Arial'>the situation where the master host</font></pre></span> <span name = "INTRA" style='top:780px; left:511px' class="ft1"><pre><font face='Arial'>the event of problems.</font></pre></span> <span name = "INTRA" style='top:806px; left:511px' class="ft2"><pre><font face='Arial'><i><b>General</b></i></font></pre></span> <span name = "INTRA" style='top:819px; left:147px' class="ft5"><pre><font face='Arial'><i>"While SCSI drives remain relatively</i></font></pre></span> <span name = "INTRA" style='top:828px; left:525px' class="ft1"><pre><font face='Arial'>The mirroring process consists es </font></pre></span> <span name = "INTRA" style='top:840px; left:511px' class="ft1"><pre><font face='Arial'>sentially of three steps: physically</font></pre></span> <span name = "INTRA" style='top:843px; left:164px' class="ft5"><pre><font face='Arial'><i>expensive they tend to be used in </i></font></pre></span> <span name = "INTRA" style='top:852px; left:511px' class="ft1"><pre><font face='Arial'>fitting the drive, invoking the NetWare</font></pre></span> <span name = "INTRA" style='top:864px; left:511px' class="ft1"><pre><font face='Arial'>instructions to recognise the new drive</font></pre></span> <span name = "INTRA" style='top:868px; left:157px' class="ft5"><pre><font face='Arial'><i>areas where higher budgets prevail </i></font></pre></span> <span name = "INTRA" style='top:876px; left:511px' class="ft1"><pre><font face='Arial'>and to start the mirroring process, and</font></pre></span> <span name = "INTRA" style='top:888px; left:511px' class="ft1"><pre><font face='Arial'>the mirroring itself. There may also be</font></pre></span> <span name = "INTRA" style='top:893px; left:167px' class="ft5"><pre><font face='Arial'><i>and where there is more concern </i></font></pre></span> <span name = "INTRA" style='top:900px; left:511px' class="ft1"><pre><font face='Arial'>a further step involving non NetWare</font></pre></span> <span name = "INTRA" style='top:912px; left:511px' class="ft1"><pre><font face='Arial'>partitions such as, for example, placing</font></pre></span> <span name = "INTRA" style='top:924px; left:511px' class="ft1"><pre><font face='Arial'>an operating system on the drive or</font></pre></span> <span name = "INTRA" style='top:918px; left:162px' class="ft5"><pre><font face='Arial'><i>for performance and for security."</i></font></pre></span> <span name = "INTRA" style='top:936px; left:511px' class="ft1"><pre><font face='Arial'>copying DOS programs.</font></pre></span> <span name = "INTRA" style='top:948px; left:525px' class="ft1"><pre><font face='Arial'>The first two steps might reasonably</font></pre></span> <span name = "INTRA" style='top:990px; left:96px' class="ft1"><pre><font face='Arial'>Issue 73 page 21</font></pre></span> <span name = "INTRA" style='top:990px; left:658px' class="ft1"><pre><font face='Arial'>File: N0913.1</font></pre></span> <span name = "INTRA" style='top:988px; left:304px' class="ft5"><pre><font face='Arial'><i>PC Network Advisor</i></font></pre></span> <span name = "INTRA" class='nav' style='left: 357px; top: 1010px'><pre>Next page <a href='page0002.htm'>></a></pre></span> <span name = "INTRA" style='top:1050px; left:50px' class="ft4"><pre><b><font color="#FF0000" size="3" face="Arial">New!</font><font color="#FF0000" size="3" face="Arial Narrow"> </font><font size="2" face="Arial">The best sites for quality <a href="http://www.inkjet-printer-cartridges.org">inkjet printer cartridges</a> and the best sites for <a href="http://www.cheap-inkjet-cartridges.com">cheap inkjet cartridges</a></font></b></pre></span></body> <span name = "INTRA" style='top:1100px; left:300px' class="ft4"><pre><b><font color="#FF0000" size="3" face="Arial"><a href="../index.html">Windows Help Desk Home</a> </font></b></pre></span></body></html>