On Wed, Nov 25, 2009 at 9:45 PM, Alan Dayley <
alandd@consultpros.com> wrote:
> On Wed, Nov 25, 2009 at 4:22 PM, Kirk Bauer <kirk@kaybee.org> wrote:
>> For the record, I have both ntfs and ext4 partitions on the drive,
>> both mounted at all times under Ubuntu 9.10, and the drive remains in
>> a "standby" state except when I'm actually using the drives.
>
> Interesting. If I may ask, I'd like more details for my own education.
>
> How do you know the drive is in standby?
I know when it is in standby by running "hdparm -C /dev/sda" (as I
learned on this list).
> How do you know when you are actually using the drive?
For me, the only thing I have on the drive is my Windows partition
(which I virtually never use) and my data stores for VMWare Server.
So even though the drives are mounted, and even though VMWare Server
is running, until I actually access the Windows filesystem or
create/start a virtual machine, the drive isn't being used.
> As you start using it, is there any latency or pause before the access
> starts? If so, how long does it last? (Not looking for hard numbers,
> just a felt guess.)
Definitely a 2-second delay when I first access the drive when it is in standby.
> After you use it, how long before they go back to standby?
30 seconds (because of the -S setting below)
> Did you do any special settings or configuration to achieve this behavior?
Default Ubuntu 9.10 settings, except I added this to /etc/hdparm.conf
(not sure what the default would have been though).
command_line {
hdparm -B 1 -S 6 /dev/sda
}
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