- <section xml:id="dbdoclet.50438208_51921">
- <title><indexterm><primary>storage</primary><secondary>configuring</secondary><tertiary>RAID options</tertiary></indexterm>Formatting Options for RAID Devices</title>
- <para>When formatting a file system on a RAID device, it is beneficial to ensure that I/O requests are aligned with the underlying RAID geometry. This ensures that the Lustre RPCs do not generate unnecessary disk operations which may reduce performance dramatically. Use the <literal>--mkfsoptions</literal> parameter to specify additional parameters when formatting the OST or MDT.</para>
- <para>For RAID 5, RAID 6, or RAID 1+0 storage, specifying the following option to the <literal>--mkfsoptions</literal> parameter option improves the layout of the file system metadata, ensuring that no single disk contains all of the allocation bitmaps:</para>
+ <section xml:id="dbdoclet.ldiskfs_raid_opts">
+ <title>
+ <indexterm>
+ <primary>storage</primary>
+ <secondary>configuring</secondary>
+ <tertiary>RAID options</tertiary>
+ </indexterm>Formatting Options for ldiskfs RAID Devices</title>
+ <para>When formatting an ldiskfs file system on a RAID device, it can be
+ beneficial to ensure that I/O requests are aligned with the underlying
+ RAID geometry. This ensures that Lustre RPCs do not generate unnecessary
+ disk operations which may reduce performance dramatically. Use the
+ <literal>--mkfsoptions</literal> parameter to specify additional parameters
+ when formatting the OST or MDT.</para>
+ <para>For RAID 5, RAID 6, or RAID 1+0 storage, specifying the following
+ option to the <literal>--mkfsoptions</literal> parameter option improves
+ the layout of the file system metadata, ensuring that no single disk
+ contains all of the allocation bitmaps:</para>