Date: Tue, 31 Oct 2006 23:16:12 +0100 From: Ivan Voras <ivoras@fer.hr> To: freebsd-stable@freebsd.org Subject: Re: SAS Raid - mfi driver Message-ID: <ei8hus$jec$1@sea.gmane.org> In-Reply-To: <45477FCC.9050901@qbrick.com> References: <45470D95.5020801@qbrick.com> <ei7448$4rs$1@sea.gmane.org> <454718DD.8060108@qbrick.com> <45471ACC.2030604@fer.hr> <4547421D.2010206@qbrick.com> <45477FCC.9050901@qbrick.com>
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Fredrik Widlund wrote: > Solved my issue with LSI 8480E without BBU. With "write: BadBBU", > "cache: enabled", and "io: cached", performance rose to around 200MB/s > from 20MB/s. I don't know what "BadBBU" is, but from some Googling it seems to be a setting that overrides BBU detection, and enables write caching even if the system believes BBU is broken or missing. If true, this may be dangerous for data consistency.home | help
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