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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>2.5. About Primary Storage</title><link rel="stylesheet" type="text/css" href="Common_Content/css/default.css" /><link rel="stylesheet" media="print" href="Common_Content/css/print.css" type="text/css" /><meta name="generator" content="publican 2.8" /><meta name="package" content="Apache_CloudStack-Admin_Guide-4.0.0-incubating-en-US-1-" /><link rel="home" href="index.html" title="CloudStack Administrator's Guide" /><link rel="up" href="cloud-infrastructure-concepts.html" title="Chapter 2. Cloud Infrastructure Concepts" /><link rel="prev" href="about-hosts.html" title="2.4. About Hosts" /><link rel="next" href="about-secondary-storage.html" title="2.6. About Secondary Storage" /></head><body><p id="title"><a class="left" href="http://cloudstack.org"><img src="Common_Content/images/image_left.png" alt="Product Site" /></a><a class="right" href="http://docs.cloudstack.org"><img src="Common_Content/images/image_right.png" alt="Documentation Site" /></a></p><ul class="docnav"><li class="previous"><a accesskey="p" href="about-hosts.html"><strong>Prev</strong></a></li><li class="next"><a accesskey="n" href="about-secondary-storage.html"><strong>Next</strong></a></li></ul><div xml:lang="en-US" class="section" id="about-primary-storage" lang="en-US"><div class="titlepage"><div><div><h2 class="title" id="about-primary-storage">2.5. About Primary Storage</h2></div></div></div><div class="para">
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Primary storage is associated with a cluster, and it stores the disk volumes for all the VMs running on hosts in that cluster. You can add multiple primary storage servers to a cluster. At least one is required. It is typically located close to the hosts for increased performance.
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</div><div class="para">
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CloudStack is designed to work with all standards-compliant iSCSI and NFS servers that are supported by the underlying hypervisor, including, for example:
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</div><div class="itemizedlist"><ul><li class="listitem"><div class="para">
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Dell EqualLogic™ for iSCSI
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</div></li><li class="listitem"><div class="para">
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Network Appliances filers for NFS and iSCSI
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</div></li><li class="listitem"><div class="para">
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Scale Computing for NFS
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</div></li></ul></div><div class="para">
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If you intend to use only local disk for your installation, you can skip to Add Secondary Storage.
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</div></div><ul class="docnav"><li class="previous"><a accesskey="p" href="about-hosts.html"><strong>Prev</strong>2.4. About Hosts</a></li><li class="up"><a accesskey="u" href="#"><strong>Up</strong></a></li><li class="home"><a accesskey="h" href="index.html"><strong>Home</strong></a></li><li class="next"><a accesskey="n" href="about-secondary-storage.html"><strong>Next</strong>2.6. About Secondary Storage</a></li></ul></body></html>
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