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Enable multipath SAN-boot Linux system on IBM DS8000 Storage

Jun 04, 2010, 01:34 (0 Talkback[s])
(Other stories by Lei Jiang)

[ Thanks to An Anonymous Reader for this link. ]

" A key requirement of today's complex data center environments is to be able to deliver mission-critical data quickly, at any time, without interruptions or delays. Booting servers from a storage area network (SAN) can provide significant benefits in this kind of situation.

"A server traditionally boots its operating system from an internal hard disk, but this introduces a lot of effort when a physical server goes down, including replacing the server, reloading the operating system, reinstalling applications, and so on. Having the operating system boot from SAN storage simplifies this, because you only have to replace the server; your OS and applications are saved on the SAN.

"Booting from SAN can also simplify data center administration, improve disaster tolerance, and reduce total cost of ownership (TCO) through diskless servers.

"In this article, I illustrate how to set up Linux to boot from SAN storage, in this case the IBM System Storage DS8000 with the Device-Mapper MultiPath (DMMP) feature to manage multiple paths. I cover procedures for Red Hat Enterprise Linux (RHEL) 4 and 5, and SUSE Linux Enterprise Server (SLES) 9 and 10."

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