189 lines
12 KiB
HTML
189 lines
12 KiB
HTML
|
<?xml version="1.0" encoding="UTF-8"?>
|
|||
|
|
<!DOCTYPE html
|
|||
|
|
PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|||
|
|
<html lang="en-us" xml:lang="en-us">
|
|||
|
|
<head>
|
|||
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|||
|
|
<meta name="security" content="public" />
|
|||
|
|
<meta name="Robots" content="index,follow" />
|
|||
|
|
<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
|
|||
|
|
<meta name="DC.Type" content="reference" />
|
|||
|
|
<meta name="DC.Title" content="Miscellaneous limits" />
|
|||
|
|
<meta name="abstract" content="This topic provides values for other system limits, such as the number of basic disk pools, the size of a user space, and the size of a message queue." />
|
|||
|
|
<meta name="description" content="This topic provides values for other system limits, such as the number of basic disk pools, the size of a user space, and the size of a message queue." />
|
|||
|
|
<meta name="DC.Relation" scheme="URI" content="rzampoverview.htm" />
|
|||
|
|
<meta name="copyright" content="(C) Copyright IBM Corporation 2003, 2006" />
|
|||
|
|
<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2003, 2006" />
|
|||
|
|
<meta name="DC.Format" content="XHTML" />
|
|||
|
|
<meta name="DC.Identifier" content="rzampother" />
|
|||
|
|
<meta name="DC.Language" content="en-us" />
|
|||
|
|
<!-- All rights reserved. Licensed Materials Property of IBM -->
|
|||
|
|
<!-- US Government Users Restricted Rights -->
|
|||
|
|
<!-- Use, duplication or disclosure restricted by -->
|
|||
|
|
<!-- GSA ADP Schedule Contract with IBM Corp. -->
|
|||
|
|
<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
|
|||
|
|
<link rel="stylesheet" type="text/css" href="./ic.css" />
|
|||
|
|
<title>Miscellaneous limits</title>
|
|||
|
|
</head>
|
|||
|
|
<body id="rzampother"><a name="rzampother"><!-- --></a>
|
|||
|
|
<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
|
|||
|
|
<h1 class="topictitle1">Miscellaneous limits</h1>
|
|||
|
|
<div><p>This topic provides values for other system limits, such as the
|
|||
|
|
number of basic disk pools, the size of a user space, and the size of a message
|
|||
|
|
queue.</p>
|
|||
|
|
<div class="section"><div class="p">
|
|||
|
|
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><caption>Table 1. Miscellaneous limits</caption><thead align="left"><tr><th valign="top" width="32.323232323232325%" id="d0e23">Miscellaneous limits</th>
|
|||
|
|
<th valign="top" width="67.67676767676768%" id="d0e25">Value</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead>
|
|||
|
|
<tbody><tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum system and I/O hardware configurations and capacities</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">See <a href="http://www.redbooks.ibm.com/redbooks/pdfs/ga195486.pdf" target="_blank">IBM <br /><img src="eserver.gif" alt="eServer
logo" /><br /> i5 and iSeries™ Handbook</a>.</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 "><img src="./delta.gif" alt="Start of change" />Maximum number of DASD arms per partition<img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 "><img src="./delta.gif" alt="Start of change" />2047<img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Minimum number of DASD arms required for acceptable performance.</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">See <a href="http://www.ibm.com/eserver/iseries/perfmgmt/diskarm.htm" target="_blank"> Disk Arm Considerations</a><br /><img src="www.gif" alt="Link outside the Information Center" /><br /> in the Resource Library on the Performance
|
|||
|
|
Management web site.</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of connections to a disk unit in an Enterprise
|
|||
|
|
Storage Server<sup>®</sup></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">8</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum combined number of DASD arms and redundant connections
|
|||
|
|
to disk units<sup>1</sup></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">Approximately 2800</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of basic user ASPs</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">31</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of independent ASPs</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">223</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of logical partitions</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">See the <a href="../rzait/rzaiticlpar.htm">Logical
|
|||
|
|
Partitions</a> topic in the Information Center.</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum database size for Domino™</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">256 gigabytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum size of a user space<sup>2</sup></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">16 773 120 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum size of a user index<sup>3</sup></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">1 terabyte</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum size of a data queue or a user queue<sup>4</sup></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">2 gigabytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum size of a message queue<sup>5</sup></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">16 megabytes (approximately 75 000 messages)</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of new messages of any one message type
|
|||
|
|
on a message queue</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">Limited only by size of message queue</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 "><img src="./delta.gif" alt="Start of change" />Maximum number of program messages that can be created
|
|||
|
|
in a job <sup>6</sup><img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 "><img src="./delta.gif" alt="Start of change" />4 294 967 293<img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 "><img src="./delta.gif" alt="Start of change" />Maximum number of records for each version of the history
|
|||
|
|
log<img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 "><img src="./delta.gif" alt="Start of change" />10 000 000 <img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of unique Volume IDs displayed/printed
|
|||
|
|
in Product Activity Log's Removable Media Lifetime Statistics for each Media
|
|||
|
|
Option</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">5000</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum number of input fields that can be specified
|
|||
|
|
for a display file</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">256</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 ">Maximum total size of concurrently used teraspace address
|
|||
|
|
ranges per job</td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 ">Approximately 512 gigabytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="32.323232323232325%" headers="d0e23 "><img src="./delta.gif" alt="Start of change" />Range of user-defined double-byte characters that can
|
|||
|
|
be defined and maintained using the character generator utility (CGU) for
|
|||
|
|
Japanese<img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
<td valign="top" width="67.67676767676768%" headers="d0e25 "><img src="./delta.gif" alt="Start of change" />hexadecimal 6941 through 7FFE <img src="./deltaend.gif" alt="End of change" /></td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td colspan="2" valign="top" headers="d0e23 d0e25 "><strong>Notes:</strong> <ol><li><img src="./delta.gif" alt="Start of change" />The maximum number of DASD arms per partition is limited to
|
|||
|
|
2047.<img src="./deltaend.gif" alt="End of change" /></li>
|
|||
|
|
<li> Listed size is the maximum when the machine is allowed to choose the
|
|||
|
|
alignment. Absolute maximum size of a user space is 16 776 704 bytes.</li>
|
|||
|
|
<li> To create a 1 terabyte capable user index when using the QUSCRTUI API,
|
|||
|
|
specify a value of "1" for the Index Size Option. Otherwise, the size limit
|
|||
|
|
will be 4 gigabytes.</li>
|
|||
|
|
<li>The maximum size of a data queue that can be created through the data
|
|||
|
|
queue host server is 16 megabytes.</li>
|
|||
|
|
<li> Message queue QSYSOPR is shipped with a message queue full action of
|
|||
|
|
*WRAP. When the message queue is full, the oldest informational and answered
|
|||
|
|
messages are removed from the message queue to allow space for new messages
|
|||
|
|
to be added. If the removing of the informational and answered messages does
|
|||
|
|
not provide enough space, then unanswered inquiry messages are removed until
|
|||
|
|
there is space to add the new message. The default reply is sent before an
|
|||
|
|
unanswered inquiry message is removed. For more information, see the MSGQFULL
|
|||
|
|
parameter on the CHGMSGQ command.</li>
|
|||
|
|
<li><img src="./delta.gif" alt="Start of change" />If the job has multiple threads, then the limit is the number
|
|||
|
|
of messages allowed in each thread.<img src="./deltaend.gif" alt="End of change" /></li>
|
|||
|
|
</ol>
|
|||
|
|
</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div class="section"><div class="p">
|
|||
|
|
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" width="100%" frame="border" border="1" rules="all"><caption>Table 2. Interprocess Communication
|
|||
|
|
(IPC) limits</caption><thead align="left"><tr><th valign="top" width="50%" id="d0e190">Interprocess Communication (IPC) limits</th>
|
|||
|
|
<th valign="top" width="50%" id="d0e192">Value</th>
|
|||
|
|
</tr>
|
|||
|
|
</thead>
|
|||
|
|
<tbody><tr><td valign="top" width="50%" headers="d0e190 ">Maximum number of Single UNIX<sup>®</sup> Specification message queues on the
|
|||
|
|
system</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">2 147 483 46</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum size of a Single UNIX Specification message queue</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">16 773 120 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum size of a single message on a Single UNIX Specification
|
|||
|
|
message queue</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">65 535 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum number of semaphore sets on the system</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">2 147 483 646</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum number of semaphores per semaphore set</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">65 535</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum number of shared memory segments on the system</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">2 147 483 646</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum size of a teraspace shared memory segment</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">4 294 967 295 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum size of a resizeable teraspace shared memory segment</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">268 435 456 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum size of a nonteraspace shared memory segment</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">16 776 704 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
<tr><td valign="top" width="50%" headers="d0e190 ">Maximum size of a resizeable nonteraspace shared memory segment</td>
|
|||
|
|
<td valign="top" width="50%" headers="d0e192 ">16 773 120 bytes</td>
|
|||
|
|
</tr>
|
|||
|
|
</tbody>
|
|||
|
|
</table>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
<div>
|
|||
|
|
<div class="familylinks">
|
|||
|
|
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzampoverview.htm" title="If you exceed system limitations you can experience an application outage or a system outage. Avoid these types of outages by being aware of the maximum capacities and system limitations in advance.">Maximum capacities</a></div>
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|