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	<title>phaq &#187; HA</title>
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	<description>"a geeks daily life"</description>
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		<title>Is RAID1 possible on an USB stick?</title>
		<link>http://phaq.phunsites.net/2007/10/26/is-raid1-possible-on-an-usb-stick/</link>
		<comments>http://phaq.phunsites.net/2007/10/26/is-raid1-possible-on-an-usb-stick/#comments</comments>
		<pubDate>Fri, 26 Oct 2007 18:48:15 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2007/10/26/is-raid1-possible-on-an-usb-stick/</guid>
		<description><![CDATA[Last week we had a discussion at the office wether it would possible to span a RAID across USB sticks.
That question came up as a joke while I was working on some RAID system for evaluation purposes.
Well, my friend doubted it when I replied that it would definitely work out with a FreeBSD software RAID [...]]]></description>
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		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>FreeBSD software RAID0: gvinum vs. gstripe</title>
		<link>http://phaq.phunsites.net/2007/06/07/freebsd-software-raid0-gvinum-vs-gstripe/</link>
		<comments>http://phaq.phunsites.net/2007/06/07/freebsd-software-raid0-gvinum-vs-gstripe/#comments</comments>
		<pubDate>Thu, 07 Jun 2007 21:45:21 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2007/06/07/freebsd-software-raid0-gvinum-vs-gstripe/</guid>
		<description><![CDATA[Back some time I announced reviewing FreeBSD&#8217;s geom software RAID implementations.
Todays article compares geom stripe (gstripe) along with geom gvinum (gvinum) for disk striping (RAID0).
All testing was done on the same hardware as before to get results comparable to previous tests.
Benchmarks were taken using stripe sizes of 64k, 128k and 256k and measured using dd, [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2007/06/07/freebsd-software-raid0-gvinum-vs-gstripe/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>Convert Single Disk to GEOM Mirror</title>
		<link>http://phaq.phunsites.net/2006/10/28/convert-single-disk-to-geom-mirror/</link>
		<comments>http://phaq.phunsites.net/2006/10/28/convert-single-disk-to-geom-mirror/#comments</comments>
		<pubDate>Sat, 28 Oct 2006 01:15:14 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[FreeBSD]]></category>
		<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://www.phunsites.net/wp/2006/10/28/convert-single-disk-to-geom-mirror/</guid>
		<description><![CDATA[This article should have been published already last month, unfortunately the draft was left forgotten for a while in my mailbox.
As some may remember I published two articles on how to setup GEOM disk mirroring on alpha and sparc earlier this year. These articles were originally based upon Ralf Engelschalls disk mirroring howto.
I had installed [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/10/28/convert-single-disk-to-geom-mirror/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Realtime File System Replication On FreeBSD</title>
		<link>http://phaq.phunsites.net/2006/08/11/realtime-file-system-replication-on-freebsd/</link>
		<comments>http://phaq.phunsites.net/2006/08/11/realtime-file-system-replication-on-freebsd/#comments</comments>
		<pubDate>Fri, 11 Aug 2006 09:22:37 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://www.phunsites.net/wp/2006/08/11/realtime-file-system-replication-on-freebsd/</guid>
		<description><![CDATA[This article describes a concept on how to implement realtime file system replication on a dual-node FreeBSD cluster to provide real HA services.
Maybe you are familiar with DRBD (distributed replicated block device) from the Linux world already, which basically does something we could call network-RAID1.
Since DRBD does not run on FreeBSD one might be tempted [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/08/11/realtime-file-system-replication-on-freebsd/feed/</wfw:commentRss>
		<slash:comments>9</slash:comments>
		</item>
		<item>
		<title>Using NetBSD&#8217;s RaidFrame On Alpha</title>
		<link>http://phaq.phunsites.net/2006/06/21/using-netbsds-raidframe-on-alpha/</link>
		<comments>http://phaq.phunsites.net/2006/06/21/using-netbsds-raidframe-on-alpha/#comments</comments>
		<pubDate>Wed, 21 Jun 2006 21:39:14 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2006/06/21/using-netbsds-raidframe-on-alpha/</guid>
		<description><![CDATA[Yet another software RAID howto, I seem to be growing these in a hurry after all  
This time I will cover NetBSD&#8217;s RaidFrame and how to setup RAID1 disk mirroring on a Digital Alpha PWS433au.
While the basic outline retains pretty much the concept given in the NetBSD Guide, I thought to write down my [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/06/21/using-netbsds-raidframe-on-alpha/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>FreeBSD gvinum RAID5 on Sparc64</title>
		<link>http://phaq.phunsites.net/2006/05/27/freebsd-gvinum-raid5-on-sparc64/</link>
		<comments>http://phaq.phunsites.net/2006/05/27/freebsd-gvinum-raid5-on-sparc64/#comments</comments>
		<pubDate>Fri, 26 May 2006 23:13:50 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2006/05/27/freebsd-gvinum-raid5-on-sparc64/</guid>
		<description><![CDATA[Not long ago a friend of mine generously donated me a Sun E450 server for use with my current networking projects.
The machine came along with four IBM DDRS34560 hard drives. Since a capacity of 4 GB per drive is not that overwhelming by today&#8217;s standards I was looking forward to incorporate them into a RAID5 [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/05/27/freebsd-gvinum-raid5-on-sparc64/feed/</wfw:commentRss>
		<slash:comments>1</slash:comments>
		</item>
		<item>
		<title>Sun OpenBoot: Fail-Over Booting A FreeBSD GEOM Mirror</title>
		<link>http://phaq.phunsites.net/2006/03/26/sun-openboot-fail-over-booting-a-freebsd-geom-mirror/</link>
		<comments>http://phaq.phunsites.net/2006/03/26/sun-openboot-fail-over-booting-a-freebsd-geom-mirror/#comments</comments>
		<pubDate>Sun, 26 Mar 2006 15:26:17 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2006/03/26/sun-openboot-fail-over-booting-a-freebsd-geom-mirror/</guid>
		<description><![CDATA[This is howto instruct Sun OpenBoot firmware to fail-over boot from a degraded GEOM disk mirror if the first disk failed.
]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/03/26/sun-openboot-fail-over-booting-a-freebsd-geom-mirror/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>FreeBSD GEOM mirror on Alpha</title>
		<link>http://phaq.phunsites.net/2006/03/08/freebsd-geom-mirror-on-alpha/</link>
		<comments>http://phaq.phunsites.net/2006/03/08/freebsd-geom-mirror-on-alpha/#comments</comments>
		<pubDate>Wed, 08 Mar 2006 13:08:53 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2006/03/08/freebsd-geom-mirror-on-alpha/</guid>
		<description><![CDATA[Actually my experience in GEOM disk mirroring on Alpha dates back to FreeBSD 5.3, though it seems to work out perfectly after upgrading to FreeBSD 6.0.
Again, the concept is similar to setting up a mirror on intel boxes, though &#8211; again &#8211; there are some minor differences which may cause some headaches!
I&#8217;m referring once more [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/03/08/freebsd-geom-mirror-on-alpha/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
		</item>
		<item>
		<title>FreeBSD GEOM mirror on Sparc64</title>
		<link>http://phaq.phunsites.net/2006/03/07/freebsd-geom-mirror-on-sparc64/</link>
		<comments>http://phaq.phunsites.net/2006/03/07/freebsd-geom-mirror-on-sparc64/#comments</comments>
		<pubDate>Tue, 07 Mar 2006 18:19:14 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2006/03/07/freebsd-geom-mirror-on-sparc64/</guid>
		<description><![CDATA[As I promised earlier I will have a look at setting up a GEOM mirror on Sparc64 using FreeBSD 6.
Though it is quiet similar to the Intel world, there are some minor differences which I&#8217;m going to show you.
I&#8217;m referring myself to Ralf S. Engelschalls GEOM mirroring approach 1 using a whole disk.
His second method [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/03/07/freebsd-geom-mirror-on-sparc64/feed/</wfw:commentRss>
		<slash:comments>2</slash:comments>
		</item>
		<item>
		<title>Considerations on FreeBSD System Disk Mirroring with GEOM</title>
		<link>http://phaq.phunsites.net/2006/03/06/considerations-on-freebsd-system-disk-mirroring-with-geom/</link>
		<comments>http://phaq.phunsites.net/2006/03/06/considerations-on-freebsd-system-disk-mirroring-with-geom/#comments</comments>
		<pubDate>Mon, 06 Mar 2006 19:48:47 +0000</pubDate>
		<dc:creator>Gianpaolo Del Matto</dc:creator>
				<category><![CDATA[HA]]></category>

		<guid isPermaLink="false">http://phaq.phunsites.net/2006/03/06/considerations-on-freebsd-system-disk-mirroring-with-geom/</guid>
		<description><![CDATA[It was already the 5.x branch of FreeBSD which included the GEOM driver for creating RAID arrays of any kind.
As Ralf S. Engelschall pointed out in his famous howto, GEOM was eventually to replace ATA, CCD and good old vinum.
It may not always make sense to put a full-featured RAID controller into a box when [...]]]></description>
		<wfw:commentRss>http://phaq.phunsites.net/2006/03/06/considerations-on-freebsd-system-disk-mirroring-with-geom/feed/</wfw:commentRss>
		<slash:comments>0</slash:comments>
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