On Wed, Jan 05, 2011 at 10:47:09PM +0800, mcclnx mcc wrote: > we have several R900 servers with PERC 6/E card in it. Recently it we getting some message on /var/log/message say change to "write back" and change back to "write through". > > We figure out it is PERC 6/E card battery weak. My questions are: > > 1. some battery only use one year (some even shorter) and already this problem. > > 2. How come PERC 5/E does not have this issue? > > 3. where is DISK array information store for PERC 6/E? I did NOT see NVRAM on PERC 6/E card. > > 4. when replace PERC 6/E card and power on server sometime it will ask you "import configuration" ans some time it won't. Why? > > 5. When replace PERC 6/E card and power on. Server ask "import configuration" should I answer "yes"? Yes, it'll import your raid configuration without data coruption. It would also work with disks taken from older version of Perc. > 6. where can I find documentation which mention "import configuration"? -- Dominik Zyla
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