Channel Master DVR+ Owners Thread - Page 248 - AVS | Home Theater Discussions And Reviews
Forum Jump: 
 750Likes
Reply
Thread Tools
post #7411 of 7424 Unread Today, 06:59 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
Quote:
Originally Posted by P Smith View Post
My MacBook Pro and Dell notebooks powering USB ports during sleep/stby mode. So, it's a way it's.
I suppose a 3.5" drive will handle being on 24/7 better than a laptop drive, and electricity use should be minimal.

I'll have to measure the current draw and calculate the watts. At least the heads will be parked.

By the way, some have worried about too many load/unload cycles with the WD 'green' drives; mine is set to park the heads at 12.8 sec., (default, couldn't change) but it only had 411 L/U cycles after 336 hours on the drive, so I don't think it will be an issue.
chazdole is online now  
Sponsored Links
Advertisement
 
post #7412 of 7424 Unread Today, 08:23 AM
AVS Special Member
 
P Smith's Avatar
 
Join Date: Apr 2003
Location: Mediterranean Sea
Posts: 2,130
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 116 Post(s)
Liked: 149
Usually current draw in all mods listed in white papers/manuals at mfg sites
P Smith is offline  
post #7413 of 7424 Unread Today, 08:31 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
Quote:
Originally Posted by P Smith View Post
Usually current draw in all mods listed in white papers/manuals at mfg sites
A direct measurement is the most accurate.
chazdole is online now  
post #7414 of 7424 Unread Today, 08:57 AM
Senior Member
 
OTA_jay's Avatar
 
Join Date: Oct 2014
Posts: 406
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 245 Post(s)
Liked: 34
Quote:
Originally Posted by chazdole View Post
Wonder if this is why CM has a 'preferred' hard drive list?
If that were truly the case, they'd be recommending the WD "My Passport Ultra" (portable) drive, since it "sleeps" by default after 30 minutes (right out of the package).
......while certain "recommended" Seagate drives would spin constantly!
People need to be less preoccupied with the fact that they recommend and especially.....sell Seagate drives exclusively.
Numerous other drives have worked perfectly well with the DVR+!

Last edited by OTA_jay; Today at 09:02 AM.
OTA_jay is offline  
post #7415 of 7424 Unread Today, 09:10 AM
Senior Member
 
wiscojim's Avatar
 
Join Date: Mar 2009
Posts: 288
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 43 Post(s)
Liked: 137
Quote:
Originally Posted by OTA_jay View Post
If that were truly the case, they'd be recommending the WD "My Passport Ultra" (portable) drive, since it "sleeps" by default after 30 minutes (right out of the package).
......while certain "recommended" Seagate drives would spin constantly!
People need to be less preoccupied with the fact that they recommend and especially.....sell Seagate drives exclusively.
Numerous other drives have worked perfectly well with the DVR+!
CM/E* still needs to put a priority on making the unit work with all current USB drives. I don't see any reason why they can't make it compatible to use larger drives also (so long as you don't exceed the 999 recordings limit). Hopefully the fix will be in the next FW release.

For me, spin down is not an issue. Never worried about it. Likely never will.

.
wiscojim is offline  
post #7416 of 7424 Unread Today, 09:58 AM
AVS Addicted Member
 
Kelson's Avatar
 
Join Date: Jul 2004
Location: Delaware - The First State (USA)
Posts: 10,683
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 667 Post(s)
Liked: 514
Let's not forget that it is the devices responsibility, in this case the DVR+, to send out a USB sleep command when the system goes into standby.

I have media players with USB ports for attached HDD's. I have used externally powered Rosewill multi-drive enclosures with them as well as ready-built external USB drives (also externally powered). When the units go into standby, they send a USB sleep code which shuts down the drives. The units are still active on the network and any activity directed towards them causes the drives to spin up until the activity is complete then go to sleep again.

The DVR+ does not do that -- the designers obviously want the drive to spin constantly when the unit is in standby. Their recommended drives are ones that do not spin down on their own.

- kelson h

The bitterness of poor quality lasts long after the sweetness of the low price is forgotten . . . life is too short to drink bad wine

Kelson is offline  
post #7417 of 7424 Unread Today, 10:05 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
Quote:
Originally Posted by OTA_jay View Post
If that were truly the case, they'd be recommending the WD "My Passport Ultra" (portable) drive, since it "sleeps" by default after 30 minutes (right out of the package).
......while certain "recommended" Seagate drives would spin constantly!
People need to be less preoccupied with the fact that they recommend and especially.....sell Seagate drives exclusively.
Numerous other drives have worked perfectly well with the DVR+!
Not a fan of Seagate drives. But I'm not sure too many people are "preoccupied" by which drives CM recommends. Most of the people I have noticed are using drives they already have, or use their own preferred brand, or whatever is on sale at the time.

You can never be sure the reason a company recommends a particular drive- is it because they have tested hundreds of different drives for thousands of hours, or are they getting a kickback or some other remuneration?

I used to swear by Maxtor drives. Until I got a couple of clunkers that developed the 'click of death' way too soon. And I have had a couple of bad experiences with Seagates.

I suppose we each have our favorite.
chazdole is online now  
post #7418 of 7424 Unread Today, 10:27 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
Quote:
Originally Posted by Kelson View Post
Let's not forget that it is the devices responsibility, in this case the DVR+, to send out a USB sleep command when the system goes into standby.-snip-The DVR+ does not do that -- the designers obviously want the drive to spin constantly when the unit is in standby. Their recommended drives are ones that do not spin down on their own.
I would tend to agree with this. But I don't know for sure. I don't remember anyone saying their external drive shut off completely when DVR+ is in stdby. Some have said their drives spin down.

My thinking is perhaps drive spinup/startup when waking from standby would take too long to suit CM/DVR+. You have to admit, it does start up and display video quickly. Not so much after being unplugged.

I will perform a test,
-Put DVR+ in stdby
-turn off power to ext drive
-simultaneously turn on DVR+ and drive

I suspect it will kick and scream about no drive connected, or "confirm this drive" or some such issue. If no problems, I will build a circuit to shut down my drive when DVR+ is in stdby. It's insane to have a drive spinning 24/7 when it might only be used 2 or 3 hours. Be right back.
chazdole is online now  
post #7419 of 7424 Unread Today, 10:34 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
As I suspected, the DVR+ is not happy if the drive is shut off, even if in standby. Had to go thru the whole "confirm" business.

Oh well. Will research how to get WD green drives to spin down on their own. Not a high priority at this point, more of an annoyance. Which I have probably become with all this yammering.
chazdole is online now  
post #7420 of 7424 Unread Today, 11:10 AM
AVS Special Member
 
P Smith's Avatar
 
Join Date: Apr 2003
Location: Mediterranean Sea
Posts: 2,130
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 116 Post(s)
Liked: 149
Quote:
Originally Posted by chazdole View Post
A direct measurement is the most accurate.
I've being doing that in EE lab for years; there are many aspects, just a few (what is hard to execute in home) - expensive equipment, what must be calibrated regularly by specialized companies, enough DUT for statistically correct values, etc
P Smith is offline  
post #7421 of 7424 Unread Today, 11:20 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
Quote:
Originally Posted by P Smith View Post
I've being doing that in EE lab for years; there are many aspects, just a few (what is hard to execute in home) - expensive equipment, what must be calibrated regularly by specialized companies, enough DUT for statistically correct values, etc
Hardly. Very easy to do. Measure the current, do the math, voila, done. I don't need precision down to the 1/1000th of a watt. They also make watt meters, but I don't own one.

No need to make it more complicated than it is. I trust my measurements more than I trust a company's pdf, edited by who knows. In addition, I'm testing their drive in MY enclosure.

Thanks anyway.
chazdole is online now  
post #7422 of 7424 Unread Today, 11:26 AM
AVS Special Member
 
P Smith's Avatar
 
Join Date: Apr 2003
Location: Mediterranean Sea
Posts: 2,130
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 116 Post(s)
Liked: 149
I could proof my numbers what was taken into those PDFs . With test plans, test procedures, serial numbers of DMM, power supplies, eLoads, etc and dates/companies who/when did calibrations.
If you doing the measures for living ...

Good luck !
chazdole likes this.
P Smith is offline  
post #7423 of 7424 Unread Today, 11:35 AM
AVS Addicted Member
 
Kelson's Avatar
 
Join Date: Jul 2004
Location: Delaware - The First State (USA)
Posts: 10,683
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 667 Post(s)
Liked: 514
Quote:
Originally Posted by chazdole View Post
It's insane to have a drive spinning 24/7 when it might only be used 2 or 3 hours.
Not at all. Anyway, my point is simply that there are probably design considerations that no one here knows anything about and those designs call for the drive to spin continuously in a ready state. Making the drive spin down when in standby simply because someone feels that is the way it should be, takes the burden off CM when something goes wrong.

- kelson h

The bitterness of poor quality lasts long after the sweetness of the low price is forgotten . . . life is too short to drink bad wine

Kelson is offline  
post #7424 of 7424 Unread Today, 11:45 AM
Member
 
chazdole's Avatar
 
Join Date: Nov 2012
Posts: 154
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 39 Post(s)
Liked: 23
Quote:
Originally Posted by Kelson View Post
Not at all. Anyway, my point is simply that there are probably design considerations that no one here knows anything about and those designs call for the drive to spin continuously in a ready state. Making the drive spin down when in standby simply because someone feels that is the way it should be, takes the burden off CM when something goes wrong.
Could be. I'd like to hear what design considerations would call for not being able to wait the 10 seconds for a drive to start up. But why has every other DVR I have ever owned shut off the drive when shutting down? They seemed to handle it just fine. Is there some black magic voodoo stuff going on inside these thin, sleek beauties?
chazdole is online now  
Sponsored Links
Advertisement
 
Reply HDTV Recorders

Tags
Channel Master , dvr+ , maintanance restart

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off