[j-nsp] J-Series RAM

[Peter E. Fry]

On 6 Aug 2007 at 17:53, Matt Stevens wrote:
[...]
>  From reading the archives it looks like the 4350's use pretty standard 
> DRAM. But I can't find any mention of the exact type needed - either
> in the archives or on the wiki.

  It's PC3200, i.e. DDR1, 200Mhz, CAS3, unbuffered 184-pin DIMM.  The 
chipset (in the J6350, at least) is the Intel E7221, essentially a 
925X MCH.  Juniper uses non-ECC, but I prefer to use ECC -- the 
chipset supports it, and the BIOS appears to.  The unit will accept 
(i.e. boot with) up to 4GB, but the spec is 2GB max.
  Naturally, I'd recommend having a look at what's actually installed 
in your unit prior to buying new.
  Hmm.  Wiki?  [http://juniper.cluepon.net/index.php/J4350]?  There's 
a nice photo -- take a closer look (although the labels aren't... 
quite... readable).

> I'm imagining third-party RAM is much cheaper than Junipers. Can
> anyone shed some light on the specifics. Also, how does third-party
> RAM affect service contracts - is there an "approved" third party
> list?

  Just... a tad cheaper, yes.  Juniper uses Micron RAM (in all of the 
units I've seen), so you can hardly go wrong with Crucial.  I can't 
comment on the support aspect -- heck, call 'em and ask.

Peter E. Fry