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2<!DOCTYPE sections SYSTEM "/dtd/book.dtd"> 2<!DOCTYPE sections SYSTEM "/dtd/book.dtd">
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4<!-- The content of this document is licensed under the CC-BY-SA license --> 4<!-- The content of this document is licensed under the CC-BY-SA license -->
5<!-- See http://creativecommons.org/licenses/by-sa/1.0 --> 5<!-- See http://creativecommons.org/licenses/by-sa/1.0 -->
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7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-disk.xml,v 1.3 2004/07/16 09:37:11 neysx Exp $ --> 7<!-- $Header: /var/cvsroot/gentoo/xml/htdocs/doc/en/handbook/hb-install-alpha-disk.xml,v 1.4 2004/07/18 10:29:59 neysx Exp $ -->
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9<sections> 9<sections>
10<section> 10<section>
11<title>Introduction to Block Devices</title> 11<title>Introduction to Block Devices</title>
12<subsection> 12<subsection>
412as the creation of large filesystems, the use of many small files, very large 412as the creation of large filesystems, the use of many small files, very large
413files and directories containing tens of thousands of files. 413files and directories containing tens of thousands of files.
414</p> 414</p>
415 415
416<p> 416<p>
417<b>XFS</b> is a filesystem with metadata journaling that is fully supported 417<b>XFS</b> is a filesystem with metadata journaling which comes with a robust
418under Gentoo Linux's xfs-sources kernel. It comes with a robust feature-set and
419is optimized for scalability. We only recommend using this filesystem on Linux 418feature-set and is optimized for scalability. We only recommend using this
420systems with high-end SCSI and/or fibre channel storage and a uninterruptible 419filesystem on Linux systems with high-end SCSI and/or fibre channel storage and
421power supply. Because XFS aggressively caches in-transit data in RAM, improperly 420an uninterruptible power supply. Because XFS aggressively caches in-transit data
422designed programs (those that don't take proper precautions when writing files 421in RAM, improperly designed programs (those that don't take proper precautions
423to disk and there are quite a few of them) can lose a good deal of data if the 422when writing files to disk and there are quite a few of them) can lose a good
424system goes down unexpectedly. 423deal of data if the system goes down unexpectedly.
425</p> 424</p>
426 425
427<p> 426<p>
428<b>JFS</b> is IBM's high-performance journaling filesystem. It has recently 427<b>JFS</b> is IBM's high-performance journaling filesystem. It has recently
429become production-ready and there hasn't been a sufficient track record to 428become production-ready and there hasn't been a sufficient track record to

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