ok, but how should i connect the drives across the controllers? i'll have 3 pci-x cards each with 8 sata ports
2 pci-x bus with 133 Mhz and 2 with 100 Mhz and, onboard with 6 sata ports....sooooo what would be the best method of connecting the drives if i go with 4 raidz vdevs or 5 raidz vdevs? On Wed, Dec 30, 2009 at 10:19 AM, Henrik Johansson <henr...@henkis.net>wrote: > Hello, > > On Dec 30, 2009, at 2:08 PM, Thomas Burgess wrote: > > I'm about to build a ZFS based NAS and i'd like some suggestions about how > to set up my drives. > > The case i'm using holds 20 hot swap drives, so i plan to use either 4 > vdevs with 5 drives or 5 vdevs with 4 drives each (and a hot spare inside > the machine) > > > The motherboard i'm getting has 4 pci-x slots 2 @ 133 Mhz and 2 @ 100 Mhz > > I was planning on buying 3 of the famous AOC-SAT2-MV8 cards which would > give me more than enough sata slots. I'll also have 6 onboard slots. > > I also plan on using 2 sata=> compact flash adapters with 16 gb compact > flash cards for the os. > > My main question is what is the best way to lay out the vdevs? > > Does it really matter how i lay them out considering i only have gigabit > network? > > > It depends, random I/O and resilver/scrubbing should be a bit faster with 5 > vdevs but for sequential data access it should not matter over gigabit. It > all comes down to what you want out of the configuration, redundancy versus > usable space and price. > > raidz2 might be a better choice than raidz, especially if you have large > disks. For most of my storage need I would probably build a pool out of 4 > radiz2 vdevs. > > Regards > > Henrik > Henrik > http://sparcv9.blogspot.com > >
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