[zfs-discuss] Re: high density SAS

2007-01-26 Thread Anton B. Rang
> > How badly can you mess up a JBOD? > > Two words: vibration, cooling. Three more: power, signal quality. I've seen even individual drive cases with bad enough signal quality to cause bit errors. This message posted from opensolaris.org ___ zfs-

Re: [zfs-discuss] Re: high density SAS

2007-01-27 Thread Al Hopper
On Fri, 26 Jan 2007, Anton B. Rang wrote: > > > How badly can you mess up a JBOD? > > > > Two words: vibration, cooling. > > Three more: power, signal quality. > > I've seen even individual drive cases with bad enough signal quality to cause > bit errors. Yes - me too. I was a early adopter of

Re: [zfs-discuss] Re: high density SAS

2007-01-28 Thread Richard Elling
Anton B. Rang wrote: How badly can you mess up a JBOD? Two words: vibration, cooling. Three more: power, signal quality. I've seen even individual drive cases with bad enough signal quality to cause bit errors. Yep, if I crank up the amp to over 1kW, then on some frequencies, I see lots of