dd time

[Haarsma, Michael (SAPOL)]

G'Day Ben,

Should have read/write speeds around 30MB/s (easily more). So that would
make it about 88mins to transfer it.
So 1.5hours should be about right. That doesn't take into account it
having issues and attempting to re-read bad data, or if you have it on
the same IDE channel, or if it happens much faster, as 160GB 7200rpm
disks should be able to sustain sequential transfers above 30MB/s
easily.

So I would be expecting start it in the morning and have it done by
lunch time.

Michael


> -----Original Message-----
> From: linuxsa-bounces at linuxsa.org.au 
> [mailto:linuxsa-bounces at linuxsa.org.au] On Behalf Of Ben Williams
> Sent: Tuesday, 5 December 2006 10:29 AM
> To: LinuxSA
> Subject: dd time
> 
> 
> Hi all,
> 
> Long time ex-subscriber, first-time-in-a-while poster ;)
> 
> I've got a hard drive that has started to die - bad sectors - 
> and before 
> it goes totally down, I'm using dd to copy it to a new drive. 
> I've got 
> running on the box:
> 
> dd if=/dev/sda of=/dev/sdb
> 
> It's a 160Gb source drive. Does anyone have any clues as to 
> how long it 
> may take? I would guess it's just a question of read/write 
> speeds on the 
> drives, but has anyone done something similar and can say 
> "ooh, I reckon 
> about 8 hours, at a guess" or "ooh, I reckon about 8 days, at 
> a guess"?
> 
> Thanks,
> 
>   - Ben
> 
> -- 
> "Never attribute to malice that which can be adequately explained by 
> stupidity."
> 	[http://www.catb.org/~esr/jargon/html/H/Hanlons-Razor.html]
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