[mythtv-users] advice on recording direct to NAS
Mark Perkins
perkins1724 at hotmail.com
Tue May 26 05:29:09 UTC 2015
> -----Original Message-----
> From: mythtv-users [mailto:mythtv-users-bounces at mythtv.org] On Behalf
> Of Will Dormann
> Sent: Tuesday, 26 May 2015 11:36 AM
> To: Discussion about MythTV
> Subject: Re: [mythtv-users] advice on recording direct to NAS
>
> On 5/25/15 9:45 PM, Hika van den Hoven wrote:
> > In my opinion that's a commercial fable! I've been running raid with
> > up to 5 disks in a box for maybe 15 years. And I still have to see my
> > first real failure. But then it's longer ago then that, that I've used
> > seagate. Just watch ventilation and dust.
>
>
>
> Even with 15 years of evidence, that's still just anecdotal. The folks at
> BackBlaze, however, have worked with a number of drives large enough
> to draw some conclusions. See
> <https://www.backblaze.com/blog/how-long-do-disk-drives-last/> and
> related blog entries.
>
> Use scheduled SMART self-tests and have smartd configured to email you
> in cases of pending drive failure. Otherwise, don't be surprised when
> your drive dies.
>
>
>
> -WD
>
>
> _______________________________________________
This is the SMART results from the drive in question.
=== START OF INFORMATION SECTION ===
Model Family: SAMSUNG SpinPoint T166
Device Model: SAMSUNG HD501LJ
Serial Number: S0MUJ1KQ306834
LU WWN Device Id: 5 0000f0 01b306834
Firmware Version: CR100-13
User Capacity: 500,106,780,160 bytes [500 GB]
Sector Size: 512 bytes logical/physical
Device is: In smartctl database [for details use: -P show]
ATA Version is: ATA8-ACS T13/1699-D revision 3b
SATA Version is: SATA 2.5, 3.0 Gb/s
Local Time is: Tue May 26 14:54:11 2015 ACST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
General SMART Values:
Offline data collection status: (0x00) Offline data collection activity
was never started.
Auto Offline Data Collection:
Disabled.
Self-test execution status: ( 0) The previous self-test routine
completed
without error or no self-test has
ever
been run.
Total time to complete Offline
data collection: ( 8852) seconds.
Offline data collection
capabilities: (0x5b) SMART execute Offline immediate.
Auto Offline data collection on/off
support.
Suspend Offline collection upon new
command.
Offline surface scan supported.
Self-test supported.
No Conveyance Self-test supported.
Selective Self-test supported.
SMART capabilities: (0x0003) Saves SMART data before entering
power-saving mode.
Supports SMART auto save timer.
Error logging capability: (0x01) Error logging supported.
General Purpose Logging supported.
Short self-test routine
recommended polling time: ( 2) minutes.
Extended self-test routine
recommended polling time: ( 151) minutes.
SCT capabilities: (0x003f) SCT Status supported.
SCT Error Recovery Control
supported.
SCT Feature Control supported.
SCT Data Table supported.
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 0x000f 253 100 051 Pre-fail Always
- 0
3 Spin_Up_Time 0x0007 100 100 015 Pre-fail Always
- 7360
4 Start_Stop_Count 0x0032 098 098 000 Old_age Always
- 2677
5 Reallocated_Sector_Ct 0x0033 253 253 010 Pre-fail Always
- 0
7 Seek_Error_Rate 0x000f 253 253 051 Pre-fail Always
- 0
8 Seek_Time_Performance 0x0025 253 253 015 Pre-fail Offline
- 0
9 Power_On_Hours 0x0032 100 100 000 Old_age Always
- 27798
10 Spin_Retry_Count 0x0033 253 253 051 Pre-fail Always
- 0
11 Calibration_Retry_Count 0x0012 253 100 000 Old_age Always
- 0
12 Power_Cycle_Count 0x0032 099 099 000 Old_age Always
- 1775
13 Read_Soft_Error_Rate 0x000e 100 100 000 Old_age Always
- 6041
187 Reported_Uncorrect 0x0032 253 253 000 Old_age Always
- 0
188 Command_Timeout 0x0032 253 253 000 Old_age Always
- 0
190 Airflow_Temperature_Cel 0x0022 074 042 000 Old_age Always
- 26
194 Temperature_Celsius 0x0022 157 064 000 Old_age Always
- 27
195 Hardware_ECC_Recovered 0x001a 100 100 000 Old_age Always
- 6041
196 Reallocated_Event_Count 0x0032 253 253 000 Old_age Always
- 0
197 Total_Pending_Sectors 0x0012 253 253 000 Old_age Always
- 0
198 Offline_Uncorrectable 0x0030 253 253 000 Old_age Offline
- 0
199 UDMA_CRC_Error_Count 0x003e 200 200 000 Old_age Always
- 0
200 Multi_Zone_Error_Rate 0x000a 253 100 000 Old_age Always
- 0
201 Soft_Read_Error_Rate 0x000a 253 100 000 Old_age Always
- 0
202 Data_Address_Mark_Errs 0x0032 100 100 000 Old_age Always
- 6
SMART Error Log Version: 1
No Errors Logged
SMART Self-test log structure revision number 1
No self-tests have been logged. [To run self-tests, use: smartctl -t]
SMART Selective self-test log data structure revision number 0
Note: revision number not 1 implies that no selective self-test has ever
been run
SPAN MIN_LBA MAX_LBA CURRENT_TEST_STATUS
1 0 0 Not_testing
2 0 0 Not_testing
3 0 0 Not_testing
4 0 0 Not_testing
5 0 0 Not_testing
Selective self-test flags (0x0):
After scanning selected spans, do NOT read-scan remainder of disk.
If Selective self-test is pending on power-up, resume after 0 minute delay.
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