Re: [zfs-discuss] x4540 boot flash

2009-10-09 Thread Ny Whe
> >> CFs designed for the professional photography > market have better > >> specifications than CFs designed for the consumer > market. > >> > > > > CF is pretty cheap, you can pick up 16GB-32GB from > $80-$200 depending on > > brand/quality. Assuming they do incorporate wear > leveling, and

Re: [zfs-discuss] x4540 boot flash

2009-06-07 Thread Richard Elling
Paul B. Henson wrote: On Sat, 6 Jun 2009, Richard Elling wrote: The presumption is that you are using UFS for the CF, not ZFS. UFS is not COW, so there is a potential endurance problem for blocks which are known to be rewritten many times. ZFS will not have this problem, so if you use ZFS r

Re: [zfs-discuss] x4540 boot flash

2009-06-07 Thread Paul B. Henson
On Sat, 6 Jun 2009, Richard Elling wrote: > The presumption is that you are using UFS for the CF, not ZFS. > UFS is not COW, so there is a potential endurance problem for > blocks which are known to be rewritten many times. ZFS will not > have this problem, so if you use ZFS root, you are better

Re: [zfs-discuss] x4540 boot flash

2009-06-06 Thread Richard Elling
Paul B. Henson wrote: So I was looking into the boot flash feature of the newer x4540, and evidently it is simply a CompactFlash slot, with all of the disadvantages and limitations of that type of media. The sun deployment guide recommends minimizing writes to a CF boot device, in particular by N

[zfs-discuss] x4540 boot flash

2009-06-05 Thread Paul B. Henson
So I was looking into the boot flash feature of the newer x4540, and evidently it is simply a CompactFlash slot, with all of the disadvantages and limitations of that type of media. The sun deployment guide recommends minimizing writes to a CF boot device, in particular by NFS mounting /var from a