FAQ Search Today's Posts Mark Forums Read
» Video Reviews

» Linux Archive

Linux-archive is a website aiming to archive linux email lists and to make them easily accessible for linux users/developers.


» Sponsor

» Partners

» Sponsor

Go Back   Linux Archive > Gentoo > Gentoo User

 
 
LinkBack Thread Tools
 
Old 05-10-2012, 07:36 PM
David Haller
 
Default Are those "green" drives any good?

Hello,

On Wed, 09 May 2012, Dale wrote:
>As some know, I'm planning to buy me a LARGE hard drive to put all my
>videos on, eventually. The prices are coming down now. I keep seeing
>these "green" drives that are made by just about every company nowadays.
> When comparing them to a non "green" drive, do they hold up as good?
>Are they as dependable as a plain drive? I guess they are more
>efficient and I get that but do they break quicker, more often or no
>difference?

Basically: they run a 5400 min^-1, the "normal" ones at 7200 min^-1
and the green use less power. Years ago, a normal drive took 10-13W
running, up to 27W during spinup. Now it's IIRC 4-6W running and some
more during spinup (haven't seen any figures lately).

>I have noticed that they tend to spin slower and are cheaper. That much
>I have figured out. Other than that, I can't see any other difference.
> Data speeds seem to be about the same.

Yes.

>Please, no brand wars. I may get a WD, Maxtor, Samsung or some other
>brand.

Hm. You've been out of the loop. Of those 3, only one remains.
Maxtor was bought by Seagate some years ago and Samsung this year,
there's now appearing the first Samsung drives from Seagate (I got one
of those, odd labeling, sold as
2000GB Seagate Barracuda Green ST2000DL004 (HD204UI)

So, now there's only 3.5 to 4 Manufacturers left: WD, Seagate, Hitachi
and Toshiba (and Fujitsu?) manufacturing only 2.5" laptop drives.

Other sellers like cnMemory etc. used to repackage Samsung drives
(IIRC the othere Manufatureres did not allow that), I wonder what
those will do now that Samsung is bought up by Seagate.

HTH,
-dnh

--
I am supposed to be the info provider, so here is my answer:
42
By the way: What is the question? -- Johannes Meixner
in https://bugzilla.novell.com/show_bug.cgi?id=190173
 
Old 05-10-2012, 07:38 PM
David Haller
 
Default Are those "green" drives any good?

Hello,

On Wed, 09 May 2012, Alan McKinnon wrote:
>One thing we have noticed is that Samsung's recent model are not very
>"green", they spin up slowly, use lots of power and make a racket when
>spinning. But they do work.

Which ones? I've got one of all Models of the last years, and to none
applies what you're saying.

-dnh

--
If breathing required conscious thought, the world population would be
on a sharp decline. -- Greg Andrews
 
Old 05-10-2012, 07:39 PM
David Haller
 
Default Are those "green" drives any good?

Hello,

On Wed, 09 May 2012, Dale wrote:
>While on the thread. Has anyone had any sort of luck with the
>recertified drives?

Avoid them.

-dnh

--
Well I wish you'd just tell me rather than try to engage my enthusiasm.
-- Marvin
 
Old 05-10-2012, 08:17 PM
Mark Knecht
 
Default Are those "green" drives any good?

On Wed, May 9, 2012 at 1:47 AM, Dale <rdalek1967@gmail.com> wrote:
> Hi,
>
> As some know, I'm planning to buy me a LARGE hard drive to put all my
> videos on, eventually.

Hi Dale,
One thing I wanted to point out about the task you have in front of
you. There is a problem in your work statement here and it really
comes down to one single one letter word. That word was 'a', as in
"buy me _a_ LARGE hard drive"

No matter what drive you purchase, and no matter how well you treat
it, they all fail eventually and you lose your movies & all the time
it takes to put it back together again. At a minimum, if you plan on
buying one to use then you need to buy a _second_ drive to do backups
of the first. You need to rsync that second drive on a regular basis
and then disconnect it and put it in a different place in the house,
or even better, store it in a safety deposit box to protect against
theft or your house burning down, etc.

This sort of comment certainly goes for the system as a whole, but
at a seasoned Gentoo user I'm sure you're doing that already. ;-) Just
don't forget to do the same for this new drive.

Have fun,
Mark
 
Old 05-10-2012, 09:13 PM
Alan McKinnon
 
Default Are those "green" drives any good?

On Thu, 10 May 2012 21:38:20 +0200
David Haller <gentoo@dhaller.de> wrote:

> Hello,
>
> On Wed, 09 May 2012, Alan McKinnon wrote:
> >One thing we have noticed is that Samsung's recent model are not very
> >"green", they spin up slowly, use lots of power and make a racket
> >when spinning. But they do work.
>
> Which ones? I've got one of all Models of the last years, and to none
> applies what you're saying.
>
> -dnh
>

I wasn't talking from my experience, I was talking from my developer
colleagues' experience. I'll find out which drive models they used.

--
Alan McKinnnon
alan.mckinnon@gmail.com
 
Old 05-10-2012, 09:25 PM
Neil Bothwick
 
Default Are those "green" drives any good?

On Thu, 10 May 2012 21:36:46 +0200, David Haller wrote:

> Basically: they run a 5400 min^-1, the "normal" ones at 7200 min^-1
> and the green use less power.

Some green drives run at 5900rpm.


--
Neil Bothwick

WinErr 01E: Timing error - Please wait. And wait. And wait. And wait.
 
Old 05-10-2012, 09:39 PM
Dale
 
Default Are those "green" drives any good?

napalm@squareownz.org wrote:
> On Thu, May 10, 2012 at 07:38:34AM -0500, Dale wrote:
>>
>> The default is to keep them all running and to not spin them down. I
>> have never had a Linux OS to spin down a drive unless I set/told it to.
>> You can do this tho. The command and option is:
>>
>> hdparm -S /dev/sdX
>>
>> X would be the drive number. There is also the -s option but it is not
>> recommended.
>>
>> There is also the -y and -Y options. Before using ANY of these, read
>> the man page. Each one has it uses and you need to know for sure which
>> one does what you want.
>>
>> Dale
>>
>
> Awesome thanks very much, if I need to power down one of my drives I
> shall use hdparam!
>
> Does the kernel keep even unmounted drives spinning by default?
>
> Thank you Dale!


From my experience, as I posted I have never had Linux spin down a drive
without me telling it to or setting it up to do so. If you want that to
be disabled as you have it in windows, the default settings should be
fine.

If you have a drive that is not being used, then you can use one of
those commands to shut it down to save power, wear and tear or whatever.

Dale

:-) :-)

--
I am only responsible for what I said ... Not for what you understood or
how you interpreted my words!

Miss the compile output? Hint:
EMERGE_DEFAULT_OPTS="--quiet-build=n"
 
Old 05-10-2012, 10:53 PM
Paul Hartman
 
Default Are those "green" drives any good?

On Thu, May 10, 2012 at 6:55 AM, <napalm@squareownz.org> wrote:
>
> hum hum!
> I know that Windows does this by default (it annoys me so I disable it)
> but does linux disable or stop running the disks if they're inactive?
> I'm assuming there's an option somewhere - maybe just `unmount`!

Some drives cannot have this spindown "feature" disabled, because it
is a fixed value in their firmware in order to be "green"...

You can adjust the power management setting with hdparm, and on some
drives this allows disabling the spindown or disabling power
management altogether.

On my HDDs, I cannot disable APM but I can disable spindown by
changing the power-saving level to 254. I have a script in
/etc/local.d/ which calls:

hdparm -B 254 /dev/sd[abcdef]

at boot time.

To quote the hdparm manpage:

"A low value means aggressive power management and a high value means
better performance. Possible settings range from values 1 through 127
(which permit spin-down), and values 128 through 254 (which do not
permit spin-down). The highest degree of power management is
attained with a setting of 1, and the highest I/O performance with a
setting of 254. A value of 255 tells hdparm to disable Advanced Power
Management altogether on the drive (not all drives support disabling
it, but most do)."
 
Old 05-11-2012, 12:07 AM
Neil Bothwick
 
Default Are those "green" drives any good?

On Thu, 10 May 2012 17:53:27 -0500, Paul Hartman wrote:

> On my HDDs, I cannot disable APM but I can disable spindown by
> changing the power-saving level to 254. I have a script in
> /etc/local.d/ which calls:

You don't need a script, add the options you need to /etc/conf.d/hdparm
and add hdparm to the default runlevel.

> hdparm -B 254 /dev/sd[abcdef]

That doesn't work with my WD WD20EARX drives, which just report APM
disabled when I run it.


--
Neil Bothwick

Eagles may soar, but Wombles don't get sucked into jet engines
 
Old 05-11-2012, 01:10 AM
David Haller
 
Default Are those "green" drives any good?

Hello,

On Fri, 11 May 2012, Neil Bothwick wrote:
>On Thu, 10 May 2012 17:53:27 -0500, Paul Hartman wrote:
>> On my HDDs, I cannot disable APM but I can disable spindown by
>> changing the power-saving level to 254. I have a script in
>> /etc/local.d/ which calls:
>
>You don't need a script, add the options you need to /etc/conf.d/hdparm
>and add hdparm to the default runlevel.
>
>> hdparm -B 254 /dev/sd[abcdef]
>
>That doesn't work with my WD WD20EARX drives, which just report APM
>disabled when I run it.

Oh boy, we did get confused in this thread, did we?

RTFM hdparm.

a) Disk APM has usually only 3 settings, and only controls the
"agressiveness" or the speed of how seeks are done, i.e. how fast
the head moves seeking from track to track.
0-127 slow
128-254 fast
255 default
At least some manufacturers disable this (IIRC e.g. Seagate,
lock it to "slow" on the "green" disks and fast on enterprise.

b) spindown is a totally unrelated feature, which is can be set by
using 'hdparm -S'. I have about 20 disks in two boxen, one of them
a WD 20xxEARS, and _NONE_ spin down (until shutdown).

Have a look into your /etc/pm-profiler/{YOUR_PROFILE} (not sure if
that's gentoo standard, I only have a very minimal gentoo
installed). I've e.g. copied the "Balanced Low Latency" profile but
set
SATA_ALPM="max_performance"
In the "powersaving" you get
SATA_ALPM="min_power"
which sets (via hdparm -S) the disks to spindown after whatever
seconds (20s? I don't know).

Anyway, there is some stuff setting disk-spindown timeouts. So, choose
and/or adjust pm/upower config and/or set spindown time via 'hdparm
-S', with pm-profiler, upower, init-script, whatever.

BTW: 'hdparm -S 0' disables spindown.

HTH,
-dnh, with a seriously outdated gentoo installed only in parallel, but
I have a lot of disks and know hdparm a bit

--
When the SysAdmin answers the phone politely, say "sorry", hang up and
run awaaaaay!
Informal advice to users at Karolinska Institutet, 1993-1994
 

Thread Tools




All times are GMT. The time now is 04:28 PM.

VBulletin, Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO ©2007, Crawlability, Inc.
Copyright 2007 - 2008, www.linux-archive.org