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:714px; height:1010px"></span> <span name = "INTRA" style='top:0px; left:5px; height:1010px; width:714px' class='img'> <img src="pg0001im.png" height = "1010 width = "714" border="0"> </span> <span class='nav' style='left: 10px; top: 10px'><pre></pre></span><span name = "INTRA" style='top:108px; left:77px' class="ft3"><pre><font face='Arial'>How To</font></pre></span> <span name = "INTRA" style='top:165px; left:77px' class="ft3"><pre><font face='Arial'>Prevent Data Loss</font></pre></span> <span name = "INTRA" style='top:267px; left:77px' class="ft2"><pre><font face='Arial'><i><b>Data</b></i> <i><b>loss</b></i> <i><b>can</b></i> <i><b>be</b></i></font></pre></span> <span name = "INTRA" style='top:287px; left:77px' class="ft2"><pre><font face='Arial'><i><b>devastating</b></i> <i><b>to</b></i> <i><b>any</b></i></font></pre></span> <span name = "INTRA" style='top:265px; left:247px' class="ft0"><pre><font face='Arial'><b>F</b></font></pre></span> <span name = "INTRA" style='top:267px; left:274px' class="ft1"><pre><font face='Arial'>orget about motherboards, processors, memory modules and graphics cards</font></pre></span> <span name = "INTRA" style='top:280px; left:274px' class="ft1"><pre><font face='Arial'> the most important part of any computer system is the data it holds. Should</font></pre></span> <span name = "INTRA" style='top:292px; left:274px' class="ft1"><pre><font face='Arial'>data loss occur, it could take ages to re install those bloated applications, let</font></pre></span> <span name = "INTRA" style='top:305px; left:247px' class="ft1"><pre><font face='Arial'>alone any vital files and documents. But time is money, and in today's business</font></pre></span> <span name = "INTRA" style='top:308px; left:77px' class="ft2"><pre><font face='Arial'><i><b>business,</b></i> <i><b>but</b></i> <i><b>recovery</b></i></font></pre></span> <span name = "INTRA" style='top:318px; left:247px' class="ft1"><pre><font face='Arial'>environment the information and data a company stores is often the basis of its</font></pre></span> <span name = "INTRA" style='top:328px; left:77px' class="ft2"><pre><font face='Arial'><i><b>is</b></i> <i><b>much</b></i> <i><b>easier</b></i> <i><b>if</b></i> <i><b>a</b></i></font></pre></span> <span name = "INTRA" style='top:330px; left:247px' class="ft1"><pre><font face='Arial'>competitive advantage. With the temporary loss of such data, a company can</font></pre></span> <span name = "INTRA" style='top:343px; left:247px' class="ft1"><pre><font face='Arial'>quickly lose its cutting edge. To lose it permanently will almost certainly bring</font></pre></span> <span name = "INTRA" style='top:349px; left:77px' class="ft2"><pre><font face='Arial'><i><b>contingency</b></i> <i><b>plan</b></i> <i><b>is</b></i></font></pre></span> <span name = "INTRA" style='top:356px; left:247px' class="ft1"><pre><font face='Arial'>about severe disruption; so much disruption that many companies will never</font></pre></span> <span name = "INTRA" style='top:369px; left:247px' class="ft1"><pre><font face='Arial'>recover from such a loss.</font></pre></span> <span name = "INTRA" style='top:369px; left:77px' class="ft2"><pre><font face='Arial'><i><b>formulated</b></i> <i><b>before</b></i> <i><b>the</b></i></font></pre></span> <span name = "INTRA" style='top:389px; left:247px' class="ft1"><pre><font face='Arial'>While disk drives are more reliable than they have ever been, disk failure is not</font></pre></span> <span name = "INTRA" style='top:390px; left:77px' class="ft2"><pre><font face='Arial'><i><b>event,</b></i> <i><b>rather</b></i> <i><b>than</b></i> <i><b>after.</b></i></font></pre></span> <span name = "INTRA" style='top:402px; left:247px' class="ft1"><pre><font face='Arial'>the only reason for misfortune to strike. Apart from fire, flood, and other acts of</font></pre></span> <span name = "INTRA" style='top:415px; left:247px' class="ft1"><pre><font face='Arial'>God , the system administrator has to look out for a multitude of potentially</font></pre></span> <span name = "INTRA" style='top:422px; left:77px' class="ft1"><pre><font face='Arial'>By Dave Cook</font></pre></span> <span name = "INTRA" style='top:427px; left:247px' class="ft1"><pre><font face='Arial'>disastrous possibilities, including the loss of data from computer virus, human</font></pre></span> <span name = "INTRA" style='top:438px; left:77px' class="ft1"><pre><font face='Arial'>Technical Journalist</font></pre></span> <span name = "INTRA" style='top:440px; left:247px' class="ft1"><pre><font face='Arial'>error, theft, and deliberate vandalism.</font></pre></span> <span name = "INTRA" style='top:466px; left:247px' class="ft2"><pre><font face='Arial'><i><b>Have</b></i> <i><b>A</b></i> <i><b>Recovery</b></i> <i><b>Plan</b></i></font></pre></span> <span name = "INTRA" style='top:489px; left:247px' class="ft1"><pre><font face='Arial'>How quickly a company gets up and running after such a disaster depends</font></pre></span> <span name = "INTRA" style='top:501px; left:247px' class="ft1"><pre><font face='Arial'>largely on the precautions it has taken beforehand. After all, it is far better to</font></pre></span> <span name = "INTRA" style='top:514px; left:247px' class="ft1"><pre><font face='Arial'>formulate a recovery plan before the event, rather than later. The type of recovery</font></pre></span> <span name = "INTRA" style='top:527px; left:247px' class="ft1"><pre><font face='Arial'>plan chosen will depend not only on the level of failure or downtime the company</font></pre></span> <span name = "INTRA" style='top:539px; left:247px' class="ft1"><pre><font face='Arial'>is prepared to accept, but on how much money it is willing to spend on a recovery</font></pre></span> <span name = "INTRA" style='top:552px; left:247px' class="ft1"><pre><font face='Arial'>strategy. A real time fault tolerant system preferably achieved by remote server</font></pre></span> <span name = "INTRA" style='top:565px; left:247px' class="ft1"><pre><font face='Arial'>clustering should ensure continued operation after failure occurs. If a server</font></pre></span> <span name = "INTRA" style='top:577px; left:247px' class="ft1"><pre><font face='Arial'>were to go down, a real time fault tolerant system would automatically switch to</font></pre></span> <span name = "INTRA" style='top:590px; left:247px' class="ft1"><pre><font face='Arial'>another server or system. No data would be lost, and the least amount of</font></pre></span> <span name = "INTRA" style='top:603px; left:247px' class="ft1"><pre><font face='Arial'>disruption would occur.</font></pre></span> <span name = "INTRA" style='top:623px; left:247px' class="ft1"><pre><font face='Arial'>But real time fault tolerance is not cheap, and neither is it always perfect. Typi </font></pre></span> <span name = "INTRA" style='top:636px; left:247px' class="ft1"><pre><font face='Arial'>cally, when a file is deleted from a real time fault tolerant server, the server cluster</font></pre></span> <span name = "INTRA" style='top:649px; left:247px' class="ft1"><pre><font face='Arial'>also deletes the file. Recovery, therefore, is hardly real time because it usually</font></pre></span> <span name = "INTRA" style='top:662px; left:247px' class="ft1"><pre><font face='Arial'>takes several minutes to restore the file from its backup set. Moreover, the file</font></pre></span> <span name = "INTRA" style='top:674px; left:247px' class="ft1"><pre><font face='Arial'>may not be identical to the lost file; it could be hours, or perhaps even days old.</font></pre></span> <span name = "INTRA" style='top:687px; left:247px' class="ft1"><pre><font face='Arial'>A short time fault tolerance strategy is a far cheaper alternative. This type of</font></pre></span> <span name = "INTRA" style='top:700px; left:247px' class="ft1"><pre><font face='Arial'>strategy is best for businesses that can survive a downtime of around two or three</font></pre></span> <span name = "INTRA" style='top:712px; left:247px' class="ft1"><pre><font face='Arial'>hours without grinding to a halt. During downtime all company files and records</font></pre></span> <span name = "INTRA" style='top:725px; left:247px' class="ft1"><pre><font face='Arial'>are handled manually or moved to another server or workstation until the</font></pre></span> <span name = "INTRA" style='top:738px; left:247px' class="ft1"><pre><font face='Arial'>problem is fixed.</font></pre></span> <span name = "INTRA" style='top:764px; left:247px' class="ft2"><pre><font face='Arial'><i><b>Protection</b></i></font></pre></span> <span name = "INTRA" style='top:786px; left:247px' class="ft1"><pre><font face='Arial'>At least Windows NT offers its own degree of fault tolerance. Some of these</font></pre></span> <span name = "INTRA" style='top:799px; left:247px' class="ft1"><pre><font face='Arial'>protective features work transparently, while others, like the Emergency Repair</font></pre></span> <span name = "INTRA" style='top:812px; left:247px' class="ft1"><pre><font face='Arial'>Disk and Last Known Good configuration utilities, are designed to get the system</font></pre></span> <span name = "INTRA" style='top:825px; left:247px' class="ft1"><pre><font face='Arial'>up and running again with the minimum of downtime. The Emergency Repair</font></pre></span> <span name = "INTRA" style='top:837px; left:247px' class="ft1"><pre><font face='Arial'>Disk is basically an NT formatted floppy containing the files found in the %SYS </font></pre></span> <span name = "INTRA" style='top:850px; left:247px' class="ft1"><pre><font face='Arial'>TEMROOT%\REPAIR folder. Although the first disk will have been created</font></pre></span> <span name = "INTRA" style='top:863px; left:247px' class="ft1"><pre><font face='Arial'>during the initial NT installation, it can be updated thereafter using the RDISK</font></pre></span> <span name = "INTRA" style='top:875px; left:247px' class="ft1"><pre><font face='Arial'>utility from the command prompt. It is important to note, however, that for</font></pre></span> <span name = "INTRA" style='top:888px; left:247px' class="ft1"><pre><font face='Arial'>reasons of size this could be several megabytes on certain systems the RDISK</font></pre></span> <span name = "INTRA" style='top:901px; left:247px' class="ft1"><pre><font face='Arial'>utility does not update the SAM and SECURITY hives. Employing RDISK with</font></pre></span> <span name = "INTRA" style='top:950px; left:52px' class="ft4"><pre><font face='Helvetica'>Issue 126:January 2001</font></pre></span> <span name = "INTRA" style='top:943px; left:261px' class="ft5"><pre><font face='Arial'><b>PC</b> <b>Network</b> <b>Advisor</b></font></pre></span> <span name = "INTRA" style='top:950px; left:612px' class="ft4"><pre><font face='Helvetica'>File: P1528.1</font></pre></span> <span name = "INTRA" style='top:962px; left:52px' class="ft4"><pre><font face='Helvetica'>page 17</font></pre></span> <span name = "INTRA" style='top:962px; left:552px' class="ft4"><pre><font face='Helvetica'>Problem Solving:Software</font></pre></span> <span name = "INTRA" style='top:967px; left:284px' class="ft6"><pre><font face='Helvetica'><b>www.pcnetworkadvisor.com</b></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>