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<title>Understanding Lustre</title>
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- <entry align="left"><para>Lustre 2.0 Operations Manual</para></entry>
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- <entry align="right"><para><anchor xml:id="dbdoclet.50438250_pgfId-874" xreflabel=""/>C H A P T E R 1</para></entry>
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- <entry align="right"><para><anchor xml:id="dbdoclet.50438250_pgfId-1294039" xreflabel=""/><anchor xml:id="dbdoclet.50438250_60900" xreflabel=""/>Understanding Lustre</para></entry>
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<para><anchor xml:id="dbdoclet.50438250_pgfId-1294042" xreflabel=""/>This chapter describes the Lustre architecture and features of Lustre. It includes the following sections:</para>
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<para><anchor xml:id="dbdoclet.50438250_pgfId-1294066" xreflabel=""/><link xl:href="UnderstandingLustre.html#50438250_92658">What Lustre Is (and What It Isn’t)</link></para>
<para><anchor xml:id="dbdoclet.50438250_pgfId-1297211" xreflabel=""/>The maximum file size is not limited by the size of a single target. Lustre can stripe files across multiple objects (up to 160), and each object can be up to 2 TB in size. This leads to a maximum file size of 320 TB. (Note that Lustre itself can support files up to 2^64 bytes depending on the backing storage used by OSTs.)</para>
<para><anchor xml:id="dbdoclet.50438250_pgfId-1293994" xreflabel=""/>Athough a single file can only be striped over 160 objects, Lustre file systems can have thousands of OSTs. The I/O bandwidth to access a single file is the aggregated I/O bandwidth to the objects in a file, which can be as much as a bandwidth of up to 160 servers. On systems with more than 160 OSTs, clients can do I/O using multiple files to utilize the full file system bandwidth.</para>
<para><anchor xml:id="dbdoclet.50438250_pgfId-1293996" xreflabel=""/>For more information about striping, see <link xl:href="ManagingStripingFreeSpace.html#50438209_21279">Chapter 18</link>: <link xl:href="ManagingStripingFreeSpace.html#50438209_66186">Managing File Striping and Free Space</link>.</para>
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- <entry align="left"><para>Lustre 2.0 Operations Manual</para></entry>
- <entry align="right"><para>821-2076-10</para></entry>
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- <para><link xl:href="copyright.html">Copyright</link> © 2011, Oracle and/or its affiliates. All rights reserved.</para>
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