[iyonix-support] Re: File-core limit of 256GB - is it on the list?
- From: Roger Darlington <rogerarm@xxxxxxxxxx>
- To: iyonix-support@xxxxxxxxxxxxx
- Date: Tue, 09 Feb 2010 19:39:22 GMT
On 9 Feb 2010, John M Ward wrote:
> In article <14b4f0e650.rogerarm@xxxxxxxxxxxxxxxxxxx>,
> Roger Darlington <rogerarm@xxxxxxxxxx> wrote:
>> On 9 Feb 2010, David J. Ruck wrote:
>
> [some snipped]
>
> NAS box for larger storage...
>
>> > It would work out far cheaper than finding a suitable card and
>> > trying to write a driver for it before they were no longer
>> > available.
>
>> That is probably true, but surely extra speed is worth extra money?
>
> I don't think there is much scope for making provision for
> higher-capacity drives on the Iyonix. Especially with LFAU sizes, the
> same "law of diminishing returns" effect has now come into play as we
> had on the old FileCore 0.
>
> When the new FileCore was introduced in RISC OS 4 some elevent years
> ago, not only did allow effectively unlimited filename lengths and
> objects per directory, it also reduced the minium LFAU size by a factor
> of sixteen. Now drive capacities have gone up by more than that factor,
> once again there is no real benefit in larger capacity drives.
>
> As it is, the smaller the LFAU that is set (and we do have the option to
> make it larger than the minimum via HForm) the more a performance 'hit'
> becomes apparent -- though more modern drives and interfaces have
> overcome most if not all of that.
>
> The only sensible solution for usable capacity and speed on the Iyonix
> is additional drives. Those 160 GB drives available from APDL,
> carefully formatted by the ever-practical David Holden to 127.99 GB,
> give an extra 14 GB over a standard 120 GB drive (which works out at a
> capacity of 114 GB in practice) at the same minimum LFAU size -- though
> he supplies them at larger than that, so I re-initialise them to the
> smallest size and gain some more usable (as distinct from physical)
> capacity.
>
> It works fine here. the only limit is how many hard drives can be
> accommodated within a specific Iyonix case: different case types do (I
> think) have greater or fewer spaces.
Unfortunately, I already have the maximum four 160GB drives in the Iyo
formatted to 128GB. (I had to rip out the DVD writer).
>
>
> I do hope that's helpful!
>
--
Cheers
Roger
Atomic Software http://atomicsoftware.org.uk/
Isotope Info http://rogerarm.freeuk.com/rogerarm/
Wild Flowers http://wildflowerfinder.org.uk/
Bury Walkers http://burystrollers.org.uk/
Lasers? It's all done by mirrors!
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