Re: Rebooting and HDD spinup / spindown cycles [WAS: Re: Debian Wheezy - HP Pavilion dm1]
On Wed, 2013-10-23 at 21:41 +0200, Ralf Mardorf wrote:
> On Wed, 2013-10-23 at 18:10 +0000, Curt wrote:
> > 9 Power_On_Hours 0x0032 090 090 000 Old_age Always - 7539
> > 193 Load_Cycle_Count 0x0032 034 034 000 Old_age Always - 500820
>
> 500820 / 7539 = 66 so around 1 time each minute, but I'm not sure if we
> really understand the meaning of the attributes correctly.
>
> My WD spins down after half an hour and gvfs touched it after a short
> while, before I removed gvfs.
>
>
> $ sudo smartctl -a /dev/sdc
>
> Model Family: Western Digital Caviar Green (AF, SATA 6Gb/s)
> Device Model: WDC WD20EZRX-00DC0B0
> Serial Number: WD-WMC300753067
> LU WWN Device Id: 5 0014ee 65863b194
> Firmware Version: 80.00A80
> User Capacity: 2,000,398,934,016 bytes [2.00 TB]
> Sector Sizes: 512 bytes logical, 4096 bytes physical
> Device is: In smartctl database [for details use: -P show]
> ATA Version is: ACS-2 (minor revision not indicated)
> SATA Version is: SATA 3.0, 6.0 Gb/s (current: 1.5 Gb/s)
> Local Time is: Wed Oct 23 21:32:03 2013 CEST
> SMART support is: Available - device has SMART capability.
> SMART support is: Enabled
>
> SMART Attributes Data Structure revision number: 16
> Vendor Specific SMART Attributes with Thresholds:
> ID# ATTRIBUTE_NAME FLAG VALUE WORST THRESH TYPE UPDATED WHEN_FAILED RAW_VALUE
> 1 Raw_Read_Error_Rate 0x002f 200 200 051 Pre-fail Always - 0
> 3 Spin_Up_Time 0x0027 183 173 021 Pre-fail Always - 3833
> 4 Start_Stop_Count 0x0032 099 099 000 Old_age Always - 1354
> 5 Reallocated_Sector_Ct 0x0033 200 200 140 Pre-fail Always - 0
> 7 Seek_Error_Rate 0x002e 200 200 000 Old_age Always - 0
> 9 Power_On_Hours 0x0032 098 098 000 Old_age Always - 1984
> 10 Spin_Retry_Count 0x0032 100 100 000 Old_age Always - 0
> 11 Calibration_Retry_Count 0x0032 100 100 000 Old_age Always - 0
> 12 Power_Cycle_Count 0x0032 100 100 000 Old_age Always - 554
> 192 Power-Off_Retract_Count 0x0032 200 200 000 Old_age Always - 290
> 193 Load_Cycle_Count 0x0032 198 198 000 Old_age Always - 6413
> 194 Temperature_Celsius 0x0022 123 095 000 Old_age Always - 24
> 196 Reallocated_Event_Count 0x0032 200 200 000 Old_age Always - 0
> 197 Current_Pending_Sector 0x0032 200 200 000 Old_age Always - 0
> 198 Offline_Uncorrectable 0x0030 200 200 000 Old_age Offline - 0
> 199 UDMA_CRC_Error_Count 0x0032 200 200 000 Old_age Always - 0
> 200 Multi_Zone_Error_Rate 0x0008 200 200 000 Old_age Offline - 0
>
> 6413 / 1984 = 3
>
> I wonder if this is correct. Perhaps some reading about the meanings of the attributes still is needed.
It could be correct, sometimes I make backups over knight using a Linux
that still has got gvfs installed, so for a few hours it spins down and
up nearly each 30 minutes. I hoped it would be less than 4 and even 3
cycles, since often it's used with Linux installs that don't use gvfs,
so after a spin down, no spin up follows.
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