Here's a definitive answer. Eric
-------- Original Message -------- Subject: Re: [Fwd: [install-discuss] [Fwd: [osol-discuss] CF install best practice]] Date: Tue, 08 Apr 2008 13:36:57 -0700 From: Michael Pogue <[email protected]> To: Eric J. Ray <Eric.Ray at sun.com> References: <47FBD54D.1070404 at sun.com> The simple answer is: if you use a CF drive purchased from Sun with built-in wear leveling, you don't have to worry. Even logfiles don't write frequently enough to be a problem. Of course, don't be running programs that write continuously to the CF drive though (if so, you'll have to do the lifetime testing yourself). NOTE: Sun has done the calculations (and has tested) the CF drives that it sells. If you get a CF drive from somewhere else, you're kinda on your own. Lifetime will be a function of the CF drive specs, and how many bytes you intend to write (and what the pattern of writing is). Mike ----- Original Message ----- From: "Eric J. Ray" <[email protected]> Date: Tuesday, April 8, 2008 1:28 pm Subject: [Fwd: [install-discuss] [Fwd: [osol-discuss] CF install best practice]] To: Michael Pogue <Michael.Pogue at Sun.COM> > > ----- Original Message ----- > From Kent Watsen <kent at watsen.net> > Date Mon, 07 Apr 2008 10:42:49 -0400 > To opensolaris-discuss at opensolaris.org > Subject [osol-discuss] CF install best practice > Hi, > > I'm planning to install on and boot off of an industrial-strength > compact flash drive. The system will be a Xen Dom0 where each DomU > mounts its storage off an iSCSI-mounted SAN. Since the DomUs will > not > be using the CF, the CF's wear will only reflect the Dom0's activity. > > Even with an industrial-strength CF, the CF can only support a > limited > number of writes before it starts to go bad... I know that "swap" > and > "/var/run" are in memory (via tmpfs), but what other directories > should > I be thinking about moving off the CF? (i.e. /var/log/? - assuming I > > don't care to persist logs across reboots...) > > What do other people do? > >
