[chbot] [OT] SSD for a Pi 400.

Richard Jones richardandjanenz at gmail.com
Mon Jan 25 09:15:41 GMT 2021


Below is the improved smartctl output for my Samsung T5 500GB SSD connected
to the Rpi4 which seems to show that the drive temperature is around 40°C
and that the drive is healthy.
I get the same results with  $ sudo smartctl -d scsi -a /dev/sda
Maybe one of these commands would produce an enhanced report with Transcend?

Richard Jones

 $ sudo smartctl -d sat -a /dev/sda
smartctl 6.6 2017-11-05 r4594 [armv7l-linux-4.19.66-v7l+] (local build)
Copyright (C) 2002-17, Bruce Allen, Christian Franke, www.smartmontools.org

=== START OF INFORMATION SECTION ===
Device Model:     Samsung Portable SSD T5
Serial Number:    S50TNV0M700986F
LU WWN Device Id: 5 002538 e00000000
Firmware Version: MVT42P1Q
User Capacity:    500,107,862,016 bytes [500 GB]
Sector Size:      512 bytes logical/physical
Rotation Rate:    Solid State Device
Form Factor:      mSATA
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-2, ATA8-ACS T13/1699-D revision 4c
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Mon Jan 25 22:02:01 2021 NZDT
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: (    0) seconds.
Offline data collection
capabilities: (0x53) SMART execute Offline immediate.
Auto Offline data collection on/off support.
Suspend Offline collection upon new
command.
No 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: (  85) minutes.

SMART Attributes Data Structure revision number: 1
Vendor Specific SMART Attributes with Thresholds:
ID# ATTRIBUTE_NAME          FLAG     VALUE WORST THRESH TYPE      UPDATED
 WHEN_FAILED RAW_VALUE
  5 Reallocated_Sector_Ct   0x0033   100   100   010    Pre-fail  Always
    -       0
  9 Power_On_Hours          0x0032   099   099   000    Old_age   Always
    -       4176
 12 Power_Cycle_Count       0x0032   098   098   000    Old_age   Always
    -       1013
177 Wear_Leveling_Count     0x0013   099   099   000    Pre-fail  Always
    -       2
179 Used_Rsvd_Blk_Cnt_Tot   0x0013   100   100   010    Pre-fail  Always
    -       0
181 Program_Fail_Cnt_Total  0x0032   100   100   010    Old_age   Always
    -       0
182 Erase_Fail_Count_Total  0x0032   100   100   010    Old_age   Always
    -       0
183 Runtime_Bad_Block       0x0013   100   100   010    Pre-fail  Always
    -       0
187 Reported_Uncorrect      0x0032   100   100   000    Old_age   Always
    -       0
190 Airflow_Temperature_Cel 0x0032   060   038   000    Old_age   Always
    -       40
195 Hardware_ECC_Recovered  0x001a   200   200   000    Old_age   Always
    -       0
199 UDMA_CRC_Error_Count    0x003e   100   100   000    Old_age   Always
    -       0
235 Unknown_Attribute       0x0012   099   099   000    Old_age   Always
    -       1011
241 Total_LBAs_Written      0x0032   099   099   000    Old_age   Always
    -       2316389328

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 1
 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.



On Mon, Jan 25, 2021 at 5:20 PM hamster at snap.net.nz <hamster at snap.net.nz>
wrote:

> I would put it down to it being a cheap drive.
>
> A drive at twice the price per GB will most likely have twice the features
> and reliability...
>
>
>
>
>
>
> -------- Original message --------
> From: Volker Kuhlmann <list57 at top.geek.nz>
> Date: Mon, 25 Jan 2021, 5:13 PM
> To: Christchurch Robotics <chchrobotics at lists.ourshack.com>
> Subject: Re: [chbot] [OT] SSD for a Pi 400.
>
> On Sun 24 Jan 2021 17:24:00 NZDT +1300, Michael Field wrote:
>
> > Smartclt did not auto detect USB bridge type. Had to set SMART device
> type to
> > 'scsi' with the - d switch.
> > Now says SMART support is available and enabled.
>
> Thanks! For me, anything that doesn't support SMART is best left in the
> shop. One just needs to be able to tell what state the disks are in.
>
> The screen photo you sent me looks good at the top in the info section,
> but has no output in the attributes/data section. Like reporting disk
> temperature as 0 is implausible, and there's nothing else. Is there an
> SSD disk that does not have a temperature sensor? I thought it'd be
> required for lifetime health management.
>
> I'm unsure whether the Transcend SSD disk has a bare-basic SMART
> implementation or whether the USB bridge is blocking some of the SMART
> data to get across. One could only tell by removing the USB bridge from
> the equation.
>
>
> Thanks Richard too! But the interesting question is whether there's
> useful stuff in the attributes and data sections, that'll tell the disk
> status. The info section just shows the disk model etc.
>
>
> Why can't the raspberries just put a SATA connector on, instead of this
> USB lafaffel??
>
> Volker
>
> --
> Volker Kuhlmann
> http://volker.top.geek.nz/ Please do not CC list postings to me.
>
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