<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=windows-1252">
</head>
<body dir="ltr">
<p>from Bryan Hess:<br>
</p>
<div class="moz-forward-container"><br>
<br>
-------- Forwarded Message --------
<table class="moz-email-headers-table" cellspacing="0"
cellpadding="0" border="0">
<tbody>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Subject:
</th>
<td>Re: tape news?</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Date: </th>
<td>Thu, 28 Jan 2021 12:27:01 -0500</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">From: </th>
<td>Bryan Hess <a class="moz-txt-link-rfc2396E" href="mailto:bhess@jlab.org"><bhess@jlab.org></a></td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">To: </th>
<td>Mark Ito <a class="moz-txt-link-rfc2396E" href="mailto:marki@jlab.org"><marki@jlab.org></a></td>
</tr>
</tbody>
</table>
<br>
<br>
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252">
<style type="text/css" style="display:none;">P {margin-top:0;margin-bottom:0;}</style>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255,
255, 255);">
A few updates:</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255,
255, 255);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif;
font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255,
255, 255);">
<ul>
<li>We received the first set of 3 recovered tapes from IBM
Tuesday. Chris is reading them now to see what the success
rate was and then we will press on with on the remaining
tapes on the recovery queue. </li>
<li>I pulled a year of environmental trend data from the data
center HVAC controls to rule out environmental concerns
during the period when we saw the problem. Everything was in
spec, so that's good.</li>
<li>Our next meeting with IBM is tomorrow. </li>
<li>We sent IBM more drives for diagnostics as a check to see
if there are any errors/failures that look like the one that
caused this issue. To say it another way, instead of doing
routine drive replacements when we see errors, we are
sending them to the factory for analysis to make sure there
isn't some trend. We are still waiting for their final
drive analysis.</li>
<li>We have just started writing duplicates of new files (not
just raw) so that we can get confidence with the LTO8s. We
will allow these "just in case" duplicates to accumulate
until we have a good sample size, and then we will read them
back to demonstrate that the problem has been overcome.<br>
</li>
</ul>
<div>--Bryan</div>
</div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt"
face="Calibri, sans-serif" color="#000000"><b>From:</b> Mark
Ito <a class="moz-txt-link-rfc2396E" href="mailto:marki@jlab.org"><marki@jlab.org></a><br>
<b>Sent:</b> Thursday, January 28, 2021 11:44 AM<br>
<b>To:</b> Bryan Hess <a class="moz-txt-link-rfc2396E" href="mailto:bhess@jlab.org"><bhess@jlab.org></a><br>
<b>Subject:</b> tape news?</font>
<div> </div>
</div>
<div class="BodyFragment"><font size="2"><span
style="font-size:11pt;">
<div class="PlainText">Bryan,<br>
<br>
Any news on tape file recovery?<br>
<br>
-- Mark<br>
<br>
<br>
</div>
</span></font></div>
</div>
</body>
</html>