Total Failure Transcend TS32GSSD25S-M SDD



  • Wanted to share my experience with these SSD's.

    I had 2 of them running in two separate Lanner-7535 fanless units (CARP cluster)  for about 1 year and they both failed totally.

    Transcend through Lanner replaced one of them but I asked for an upgrade to TS32GSSD25S-MI (which is the industrial grade version of this drive) instead.

    I just installed the new drive and hope it will last longer than one year.

    Perhaps these are not the best drives (MLC)  to run pfsense on?  Please share your experiences with other SSDs.

    I am running pfsense 2.0.2 32 memstick serial version with snort and logs stored on an external syslog server.



  • Two in different systems dying on the same day seems strange, I'd suspect something strange happening either inside the drive or pfSense if they weren't co-located, if they were maybe a power or environmental issue?

    Were you keeping an eye on their SMART status from the Diagnostic menu?

    If you were did you see any signs of the problem before they died?



  • actually they failed a few months apart.

    I did look at the smart stats a while back but did not see any issues.  I wish I had a log or alert system for this though.



  • I've been thinking the same about getting alerts, I used SmoothWall for a while and they had an add-on that would e-mail you if it saw a smart issue. I've used an SSD in pfSense box too, a Crucial M4 64 GB so there is lots of free space for write balancing.

    I'm thinking a simple cron job and script to grab and e-mail the smart data every day would be good, most of the bits are already in pfSense for sending alert e-mails (System - Advanced - Notifications) and getting the SMART data (Diagnostics - Smart) and could just be copy/pasted and tweaked a bit. Having it in the web interface would be nice but my skills aren't quite up to that yet.



  • which flavor of pfsense you using?

    nanobsd or regular?

    also define total failure with these SSD's?

    they not readable? not boot or ?????



  • @SunCatalyst:

    1. which flavor of pfsense you using?

    nanobsd or regular?

    2. also define total failure with these SSD's?

    they not readable? not boot or ?????

    Hi

    1. in my first post:  pfsense 2.0.2 32 memstick serial version  (embedded kernel)

    2.  no boot, no nothing. when SSD's  are put into another machine.. nothing.

    NOTE:  I am also curious .. experiences with SSD  MLC chips vs SSD with SLC chips as far as reliability.



  • Looking at my SMART data it is going to be a while before I see enough writes to get off 0%.

    9 Power_On_Hours          0x0032   100   100   001    Old_age   Always       -       1387
    ...
    202 Perc_Rated_Life_Used    0x0018   100   100   001    Old_age   Offline      -       0
    

    I am going to be Googling a bit on these SMART entries, they are the only interesting ones so far:

    173 Wear_Leveling_Count     0x0033   100   100   010    Pre-fail  Always       -       1
    
    174 Unexpect_Power_Loss_Ct  0x0032   100   100   001    Old_age   Always       -       13
    
    181 Non4k_Aligned_Access    0x0022   100   100   001    Old_age   Always       -       118 116 1
    

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