Re: Installing CentOS 5.4 64bit on server with LSI SAS 1068E controller.

[John R Pierce <pierce@xxxxxxxxxxxx>]

Steve Thompson wrote:
> I have a bunch of machines with the LSI 1068E chip, and they _do_ work 
> fine with the default drivers, for both 5.3 and 5.4


I'm curious...   that chip [1] claims RAID 0/1/10/10e support and 
implies its hardware raid.     Is the integrated RAID support in fact 
true raid, such that they present a single SCSI unit per logical volume, 
or is it some form of fake raid which requires driver intervention to 
make it play?      If it is hardware raid, does the chip/hardware 
transparently handle rebuilds?  hot sparing?    or does it rely on BIOS 
and drivers to implement these features?

I'd certainly be concerned about the lack of raid cache memory with a 
battery back option, and would tend to want to use them as JBOD and use 
the operating system native mdraid instead ...




[1] 
http://www.lsi.com/storage_home/products_home/standard_product_ics/sas_ics/lsisas1068e/index.html


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