On Sat, 17 May 2008, James C. McPherson wrote: > Bob Friesenhahn wrote: >> On Fri, 16 May 2008, James C. McPherson wrote: >>>> 3) I've read that it's best practice to create the RAID set utilizing >>>> Hardware RAID utilities vice using ZFS raidz. Any wisdom on this? >>> You've got a whacking great cache in the ST2540, so you might as >>> well make use of it. > > Hi Bob, > You've made an assumption about what I wrote. That assumption > is incorrect. Kenny, in addition, did not say that he was or
My assumption based on your "You've got a whacking great cache in the ST2540, so you might as well make use of it." was that it was intended to imply that if the Hardware RAID utilities were not used that the 2540's NV write-cache would not be available/useful. > I am also quite well aware of the design and behaviour of the > raid engine in the ST2530. Since there seems to be no specification of the internal architecture of the 2530 and 2540 (quite odd for a Sun product!), perhaps you can create a whitepaper which describes this architecture so that Sun customers can better understand how to use the product. I have nothing but praise for the two Sun engineers who helped me understand and optimize for the 2540 back in February. Most Sun engineers on this list are very helpful and we are very thankful for their kind assistance. Bob ====================================== Bob Friesenhahn [EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/ _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
