RE: [ukha_d] Re: >2TB disks on WHS

[Andrew Jackson <andrew@xxxxxxxxxxxxxxx>]

The problem is that 32bit processor (or OS) only uses a 32bit address
bus. This gives it 2^32 possibles addresses. With RAM addresses each is
1 byte so you can only have 4GB. With hard drives though, each address
is 512 byte sector. 2^32 * 512 = 2199023255552bytes. Hard drives you
powers of 10 rather that 2 (1,000 bytes = 1KB rather than 1,024) when
advertising sizes so you get 2.19TB.

The newer hard drives that use
the 4K sectors should be able to address 8x more memory, WHS though
doesn't support this and you have to run them with 512 byte sectors so
you still only get 2.19TB.

On Tue, 8 Mar 2011 16:08:20 +0000, Tom
Lawrence  wrote:

I may be a little confused but although 32bit whsv1
will run on a 64bit capable processor...

From: ukha_d@xxxxxxx
[1] [mailto:ukha_d@xxxxxxx [2]] On Behalf Of
noughtomate
Sent:
08 March 2011 13:49
To: ukha_d@xxxxxxx [3]
Subject: [ukha_d] Re:
>2TB disks on WHS

Thanks all.

So am I correct in saying that all paths
up to the disk have to support 64-bit ? Processor -> OS -> RAID card
?

It sounds like I'm indeed stuck if WHS (v1) is limited to 32
bit.

--- In ukha_d@xxxxxxx [4], Phil Harris wrote:
>
> The
problem isn't 2tb drives - the problem is 3tb drives which have more
blocks than can be addressed using the current addressing scheme and so
come up as 2.3tb if you're unlucky...
>
> Phil
>
> Sent from another
bloody fruit-based portable device...
>
> On 7 Mar 2011, at 17:53, Tom
Lawrence wrote:
>
> > The jumper works, if you sent the jumper before
format it will not use the new technology on these new drives.
> > I
have a 2TB in my WHSv1, works fine!
> >
> > From: ukha_d@xxxxxxx
[5] [mailto:ukha_d@xxxxxxx [6]] On Behalf Of
Simon Kennedy
> >
Sent: 07 March 2011 16:16
> > To: ukha_d@xxxxxxx [7]
> >
Subject: Re: [ukha_d] Re: >2TB disks on WHS
> >
> >
> >
> > On
07/03/2011 14:45, Scott wrote:
> >> I don't think WHS is 64bit, it's
based on the 32bit version of Server
> >> 2003. Your hardware should be
OK though.
> >>
> >
> > I think the only thing you may need to be aware
of is if you buy one of
> > the new 4k sector hard drives.
> >
> >
http://homeservershow.com/wd-ears-drives.html
[8]
> >
> > Regards
> >
Simon
> >
> >
> >
> > [Non-text portions of this message have been
removed]
> >
> >
> >
> > ------------------------------------
> >
> >
>
> Yahoo! Groups Links
> >
> >
> >
>

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