Re: [zfs-discuss] Is another drive worth anything? [Summary]

2011-06-02 Thread David Magda
On Jun 2, 2011, at 20:50, Edward Ned Harvey wrote: > Also, if you have an SSD for cache device, you accelerate reads, and there > is absolutely no data risk. In the event of cache device failure, > performance degrades back to the "normal" level and everything continues > just fine. Dropping bac

Re: [zfs-discuss] Is another drive worth anything? [Summary]

2011-06-02 Thread Daniel Carosone
On Thu, Jun 02, 2011 at 09:59:39PM -0400, Edward Ned Harvey wrote: > > From: Daniel Carosone [mailto:d...@geek.com.au] > > Sent: Thursday, June 02, 2011 9:03 PM > > > > Separately, with only 4G of RAM, i think an L2ARC is likely about a > > wash, since L2ARC entries also consume RAM. > > True the

Re: [zfs-discuss] Is another drive worth anything? [Summary]

2011-06-02 Thread Edward Ned Harvey
> From: Daniel Carosone [mailto:d...@geek.com.au] > Sent: Thursday, June 02, 2011 9:03 PM > > Separately, with only 4G of RAM, i think an L2ARC is likely about a > wash, since L2ARC entries also consume RAM. True the L2ARC requires some ARC consumption to support it, but for typical user data, it

Re: [zfs-discuss] Is another drive worth anything? [Summary]

2011-06-02 Thread Daniel Carosone
Thanks, I like this summary format and the effort it took to produce seems well-spent. On Thu, Jun 02, 2011 at 08:50:58PM -0400, Edward Ned Harvey wrote: > > but I figured spending 500G on ZIL > > would be unwise. > > You couldn't possibly ever use 500G of ZIL, because the ZIL is required to >

Re: [zfs-discuss] Is another drive worth anything? [Summary]

2011-06-02 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Dave U.Random > > I am planning to revisit SSD again > when the consumer drives are reliable enough and don't have wear issues. > Right now overall integrity and long service life are more impo

Re: [zfs-discuss] Is another drive worth anything? [Summary]

2011-06-02 Thread Dave U . Random
Many thanks to all who responded. I learned a lot from this thread! For now I have decided to make a 3 way mirror because of the read performance. I don't want to take a risk on an unmirrored drive. Instead of replying to everyone separately I am following the Sun Managers system since I read that