Keep Drive Spinning

Moderators: jhartley, MSR734, nola

Keep Drive Spinning

Post by grahamperrin » Sat Feb 16, 2013 2:25 pm

Keep Drive Spinning – amongst the software by Jon Stovell.

Try it with a hard disk that's given to ZEVO.

Does the app work as expected – does the drive keep spinning?
grahamperrin Offline

User avatar
 
Posts: 1596
Joined: Fri Sep 14, 2012 10:21 pm
Location: Brighton and Hove, United Kingdom

Case example

Post by grahamperrin » Fri Mar 01, 2013 8:16 pm

A fairly old LaCie 1 TB Big Disk Extreme (300797EK) on FireWire 800 with a MacBookPro5,2 running Mountain Lion:

  • part given to ZEVO
  • part given to HFS Plus.

Details below. If I'm not mistaken:

  • the Keep Drive Spinning agent for the ZFS volume alone (net.jonstovell.keeptwozSpinning) did not keep the drive spinning; I often heard it spin up, maybe not at the designated interval
  • after I added an agent for the HFS Plus volume, the spin seemed more predictable.

Food for thought:

Jim McCullough wrote:… spinning down arrays not in use while the meta data is still available …


– Welcome to GreenBytes, I heard him say. – dalab (2012-07-10). Whilst that's not in relation to ZEVO, I do wonder whether something comparable affected my use case.

Details

Code: Select all
macbookpro08-centrim:~ gjp22$ diskutil list /dev/disk7
/dev/disk7
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk7
   1:                        EFI                         209.7 MB   disk7s1
   2:                  Apple_HFS LaCie Little Big Disk   160.4 GB   disk7s2
   3:                 Apple_Boot Boot OS X               134.2 MB   disk7s3
   4:                        ZFS                         839.4 GB   disk7s4


Code: Select all
macbookpro08-centrim:~ gjp22$ diskutil list /dev/disk10
/dev/disk10
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:             zfs_pool_proxy twoz                   *837.5 GB   disk10
grahamperrin Offline

User avatar
 
Posts: 1596
Joined: Fri Sep 14, 2012 10:21 pm
Location: Brighton and Hove, United Kingdom

Cross references

Post by grahamperrin » Sat Sep 28, 2013 6:13 am

viewtopic.php?p=5341#p5341

> …  it doesn't help. …

Is there more than one disk in the pool? If so, please see the developer's response at https://twitter.com/jstovell/status/384011319714004993
grahamperrin Offline

User avatar
 
Posts: 1596
Joined: Fri Sep 14, 2012 10:21 pm
Location: Brighton and Hove, United Kingdom


Return to General Discussion

Who is online

Users browsing this forum: No registered users and 1 guest

cron