On Thu, Nov 6, 2008 at 8:07 AM, Scott Marlowe <scott.marlowe@gmail.com> wrote:
> On Thu, Nov 6, 2008 at 8:47 AM, David Rees <drees76@gmail.com> wrote:
>>
>> In the case of the machines without a BBU on them, they are configured
>> to be in WriteBack, but are actually running in WriteThrough.
>
> I'm pretty sure the LSIs will refuse to actually run in writeback without a BBU.
It's configurable (at least on the MegaRAID cards I'm using). There's
an option you can turn on that lets you run in writeback when the BBU
is offline.
-Dave