Re: [CAD_CAM_EDM_DRO] Re: Solid state HDD's for PC based controls

I use a sandisk solid state disk on one of my computers at home
(touchscreen remote built into a coffee table), it has performed
flawlessly for 2 years, you can find them on ebay for ~$50-75 (I paid
$85 for a 1 gig drive)

erie

Jon Anderson wrote:

>Adrian Kole wrote:
>
> > In practice more writes can occur because
>
>
>>there are often management facilities for "wear leveling" so that
>>the Least Recently Used memory is used to store the next data
>>written. This can dramatically extend the life of the memory if
>>there a lot of free memory.
>>
>>
>
>Fellow I bought the interface cards from mentioned newest Sandisk CF
>cards incorporate technology to recognize and block sectors it deems are
>going bad, much like similar technology in HDD's.
>
>
>
>>I'm not sure what you mean by "full on solid state."
>>
>>
>
>The disk Omniturn sells is advertised as a solid state disk drive, with
>direct IDE connections, as opposed to what I'm doing, using a memory
>card in an adapter. They don't give details as to the Sandisk model
>drive, so I don't know if it's flash memory or the static memory
>w/battery you mention. Not interested in buying one at $350 to find out
>either...<G>
>
>
>
>>You should be aware that some DOS apps can perform disk swapping to
>>overcome limits with physical memory--though I do not know if this
>>affects any currently-available DOS CAM apps.
>>
>>
>
>Unlike many, I dedicate a PC to the machine it's controlling. The only
>application outside of control software I'll run on a DOS controlled
>machine is Xtree for file transfer. Outside of transfer of G-code files
>to the CF card, as far as I know the only other writes will be tool
>offset tables. Repeat jobs in the Omniturn will eventually have
>dedicated tooling bars, so even there, offsets will be loaded from disk
>instead of being reestablished each time.
>Both the Omniturn and my Ahha mill have way more RAM than needed, so I
>really doubt there's any issue there.
>
>Sounds like I can go a long time with what I've set out to do,
>but I appreciate the info on flash memory reliability.
>
>Jon
>
>
>
>
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