[kwlug-disc] SSD Failure Symptoms and Recovering Data?

[Ron Singh]

Sorry to hear of your SSD woes Khalid, must be a ton of read retries
causing the slow copy?

We use a ton of Samsung 860 Pro and EVO in my world for
laptops/workstations and cache devices on NAS units. The 860 PRO with it's
LMC tech is likely overkill for an end-user situation and the prices are
brutal.

The 860 EVO is the perfect blend of decent pricing and unparalleled
reliability compared to it's peers in the TLC realm.

We have used Intel, Sandisk, Crucial/Micron, and Samsung since about 2009
and the Samsung are the ones holding up best, only about 4-5 failures in 9
years within a population of at least 3000 units in play. The Intel units
were the worse.

The prices online at at CC are remarkably low for Samsung and a fair number
of SSDs out there, hard to go wrong.

Thanks,

Ron Singh



On Wed, Nov 7, 2018 at 11:25 PM Khalid Baheyeldin <kb at 2bits.com> wrote:

> So, the excepted happened and a laptop with an SSD failed.
>
> The laptop itself is OK, despite its age, but the SSD (added in the past
> few years), failed.
> First, it was a SMART error like this:
>
> Device: /dev/sda [SAT], 1 Offline uncorrectable sectors
>
> Device info:
> HP SSD S700 120GB, S/N:xxxx, FW:Q0330B1, 120 GB
>
> Then it was 3 sectors, and yesterday it was 33 sectors.
>
> I started copying the data off of the SSD to an external USB disk. It is
> working, but it is very slow.
> The shell command is slow when I press tab for command completion. Most
> commands time out (systemd reports several timeouts). The disk is mounted
> read only.
>
> The copying is now a day and a half for a only a few tens of GB. The
> target disk flickers once every minute or so.
>
> Why is this copying too slow?
>
> Another question is what replacement SSD should I get. Ron Singh posted a
> while back about Samsung EVO 860, which are still on sale at Canada
> Computers and BestBuy (ends tomorrow), e.g.
>
>
> https://www.canadacomputers.com/product_info.php?cPath=179_1229_1088&item_id=120021
>
> Are these still a good value? Or are there alternatives?
> --
> Khalid M. Baheyeldin
> 2bits.com, Inc.
> Fast Reliable Drupal
> Drupal optimization, development, customization and consulting.
> Simplicity is prerequisite for reliability. -- Edsger W.Dijkstra
> Simplicity is the ultimate sophistication. -- anonymous
>
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