John R Pierce wrote:
Stewart Williams wrote:
John R Pierce wrote:
Stewart Williams wrote:
The block I/O is the thing that concerns me as mostly I am serving a 650MB file via samba to 5 clients and I think this is where I need the speed.
is this a sequential or random access application thats using this file? is it read only/mostly, or is it random update?
I'm not sure, how can I find this out?
well, what is the nature of the application thats using this file? do you really mean just a single 650MB (sub 1GB) file? is this something like a quickbooks file? (thats kind of what it sounds like from your other answers).
It is indeed a quickbooks file. The file is currently at 645MB and grows about 20MB per week.
given what you have now, and what information we've been given, I would
A) disable BIOS raid, configuring it for JBOD w/ ACHI enabled B) mdadm mirror disks 0 and 1, and put the OS on that C) mdadm mirror disks 2 and 3, and put your shared SMB filesystem on
that
Is that a better choice than RAID 1+0?