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<TITLE>AW: RAID greater than 2TB on Fedora Core 3</TITLE>
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<P><FONT SIZE=2>Hi Rick,</FONT>
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<P><FONT SIZE=2>is it really (nowadays??) a problem of SCSI-controler?</FONT>
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<P><FONT SIZE=2>thanks,</FONT>
<BR><FONT SIZE=2>christian</FONT>
<BR><FONT SIZE=2> </FONT>
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<P><FONT SIZE=2>-----Ursprüngliche Nachricht-----</FONT>
<BR><FONT SIZE=2>Von: fedora-list-bounces@redhat.com [<A HREF="mailto:fedora-list-bounces@redhat.com">mailto:fedora-list-bounces@redhat.com</A>] Im Auftrag von Rick Stevens</FONT>
<BR><FONT SIZE=2>Gesendet: Montag, 04. April 2005 19:49</FONT>
<BR><FONT SIZE=2>An: For users of Fedora Core releases</FONT>
<BR><FONT SIZE=2>Betreff: Re: RAID greater than 2TB on Fedora Core 3</FONT>
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<P><FONT SIZE=2>Alasdair G Kergon wrote:</FONT>
<BR><FONT SIZE=2>> On Mon, Apr 04, 2005 at 11:13:40AM -0400, Scot L. Harris wrote:</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>>>If you are just trying to use all of the raw disk space you have in a</FONT>
<BR><FONT SIZE=2>>>single file system then you probably don't want raid, you want to use</FONT>
<BR><FONT SIZE=2>>>LVM. LVM creates logical volumes across multiple drives and allows you</FONT>
<BR><FONT SIZE=2>>>to create very large file systems. Understand though that this is not</FONT>
<BR><FONT SIZE=2>>>raid, it does not provide redundancy if one of the hard drives fails.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> PS. Don't use FC3's LVM2/device-mapper with stripes > 1TB or </FONT>
<BR><FONT SIZE=2>> you risk data corruption.</FONT>
<BR><FONT SIZE=2>> </FONT>
<BR><FONT SIZE=2>> You need userspace lvm2 >= 2.01.03 and kernel >= 2.6.11-rc4.</FONT>
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<P><FONT SIZE=2>Also keep in mind that the 2TB limit is not a Linux limitation, but</FONT>
<BR><FONT SIZE=2>is an inherent limitation in SCSI.</FONT>
<BR><FONT SIZE=2>----------------------------------------------------------------------</FONT>
<BR><FONT SIZE=2>- Rick Stevens, Senior Systems Engineer rstevens@vitalstream.com -</FONT>
<BR><FONT SIZE=2>- VitalStream, Inc. <A HREF="http://www.vitalstream.com" TARGET="_blank">http://www.vitalstream.com</A> -</FONT>
<BR><FONT SIZE=2>- -</FONT>
<BR><FONT SIZE=2>- There are only 10 kinds of people in the world -- those who -</FONT>
<BR><FONT SIZE=2>- understand binary and those who don't -</FONT>
<BR><FONT SIZE=2>----------------------------------------------------------------------</FONT>
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