Re: Re: Compressing DVD ISO Images

[Mal Lansell <mal@xxxxxxxxxxx>]

Yeah, I have since looked it up, and it does do raid5, but since they
only take 4 disks, that means 25% of the capacity is lost to the parity
info.

I think Id still opt for an 8 drive raid5 array, which will mean only
12.5% wastage.  With the Gb per £ ratio currently peaking at the 250Gb
drive mark, that should make a 8x250Gb (1.75Tb available) setup possible
for around £850 (PC + drives) - compared to the 1.6Tb Terrastation
(only
1.2Gb available in Raid 5) which costs around £150 more.

Mal


>--- In ukha_d@xxxxxxx, Mal Lansell <mal@...> wrote:
>
>
>
>>I haven't looked up the Terrastation specs, but is there any
>>protection against disk failure (a la Raid 5)?  It would take an
>>awfully long time to restore the contents of such a large drive
>>- at least a PC with Raid5
>>gives some protection against such an eventuality.
>>
>>
>
>A Terastation is basically a Linux box running md, the Software RAID,
>software which can provide either RAID-0, RAID-1, or RAID5.
>
>The only benefits for me of a Terastation over building a PC to do the
>same thing is the low power usage (a Mini-ITX PC might lower power
>use), and the tidy physical size of it.
>
>The benefits of doing it myself are that I can have it do exactly what
>I want...
>
>