<div dir="ltr">On Mon, Dec 11, 2017 at 5:53 PM, Stephen Worthington <span dir="ltr"><<a href="mailto:stephen_agent@jsw.gen.nz" target="_blank">stephen_agent@jsw.gen.nz</a>></span> wrote:<br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5">On Mon, 11 Dec 2017 16:09:07 -0600, you wrote:<br>
<br>
>On Mon, Dec 11, 2017 at 3:32 PM, Doug Lytle <<a href="mailto:support@drdos.info">support@drdos.info</a>> wrote:<br>
><br>
>> >>> The Reds had an annoying churning noise when mythtv recording.<br>
>><br>
>> The one thing that I make sure to check with the Reds is to disable the<br>
>> head parking.<br>
>><br>
>> Even though they're meant for a NAS, I had several delivered with it<br>
>> enabled,<br>
>><br>
>> Doug<br>
>><br>
><br>
>I have 3 raid arrays - one of which is built with (5) ST6000NM0024 6TB<br>
>drives. The drives idle sleep and heads auto park - and removing them and<br>
>setting it to off individually still did not work. The enclosure I use has<br>
>no way for me to turn it off either, so I just make sure I am writing to<br>
>the array every 30 seconds and the "clunk" stays gone. dd in the<br>
>background writing to the same file over and over. In hindsight, I should<br>
>have left them JBOD and used linux to raid them where I could have smartctl<br>
>them on each boot, but oh well. Once you copy that much data to them, it<br>
>really becomes inherently expensive to back it up - which I am not going to<br>
>do for media and lab machines.<br>
><br>
>My other 2 arrays (WD for one and Hitachi for the other) do not idle sleep<br>
>and park heads. It is fairly annoying knowing I am wearing out the drives<br>
>sooner than need be and also my vendor of choice for enclosure (formerly)<br>
>and raid functionality does not seem to care, but it is what it is.. Just<br>
>remember - "Enterprise Capacity" does not mean "Enterprise" class with the<br>
>newer Seagates :)<br>
<br>
</div></div>You can use the Linux idle3ctl command to set that problem idle3 timer<br>
on WD drives. You will probably need to install it as I do not<br>
believe it is a default package on most distros.<br></blockquote><div> </div></div></div><div class="gmail_extra">Yeah - I spent some time with Seagate Support and they told me unless my raid vendor implemented the call in their firmware, then the drives would not save the setting. They are going to release another firmware to make them raid friendly supposedly - I should go check if they have done it yet. I have had these in service for over 6 months since this started.<br></div></div>