At this point the card is pretty much useless without that cache enabled. Without recommendations for making writes of 256MB or larger files faster without this cache enabled, I will have to accept the possible data loss in the event of power outage. If it is only the case of data loss during a power outage, I will take that ... rather than failure to write at all during 99% of my usage.<div>
<br></div><div>I will, for the sake of not being an idiot, look into buying the BBUs.</div><div><br></div><div>Austin<br><br><div class="gmail_quote">On Thu, Sep 1, 2011 at 4:49 PM, Tom Bishop <span dir="ltr"><<a href="mailto:bishoptf@gmail.com">bishoptf@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Keep in mind you really only want to enable the cache if you have a<br>
bbc, otherwise you are risking your data since it can/will cache<br>
writes...just something to keep in mind.<br>
<div><div></div><div class="h5"><br>
On 9/1/11, Austin Godber <<a href="mailto:godber@gmail.com">godber@gmail.com</a>> wrote:<br>
> Hi Craig,<br>
><br>
> Thanks for the suggestion. I would if I could. I'd also probably try<br>
> another file system. Though the good news is, enabling the write cache on<br>
> that array has improved things significantly. Which, in my case, was:<br>
><br>
> tw_cli /c2/u0 set cache=on<br>
><br>
> Now, if only I had the battery backup unit for the card.<br>
><br>
> Thanks, everyone for their suggestions. For now I am happy with the<br>
> situation, but I'd be interested to hear the experiences of others.<br>
><br>
> Austin<br>
><br>
> On Thu, Sep 1, 2011 at 3:58 PM, Craig White <<a href="mailto:craig.white@ttiltd.com">craig.white@ttiltd.com</a>> wrote:<br>
><br>
>><br>
>> On Sep 1, 2011, at 1:41 PM, Austin Godber wrote:<br>
>><br>
>> > Hello,<br>
>> ><br>
>> > Does anyone have experience using a 3ware 9650SE series raid controller<br>
>> on CentOS 6.0?<br>
>> ----<br>
>> use RAID 10<br>
>><br>
>> Unless something has changed, RAID 5 is notoriously slow on the 3Ware<br>
>> controllers. Whatever you do will only incrementally speed things up. If<br>
>> performance is desired, RAID 5 is not the way to go.<br>
>><br>
>> Craig<br>
>> _______________________________________________<br>
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>><br>
><br>
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</div></div></blockquote></div><br></div>