On 11/2/20 11:50 AM, TomasK wrote:
Please note that Ben said archival/backup use.
There are no data persistent guarantees on SSDs if not used for longer
than about a year. That is probably an issue if you put data on SSD for
archival/backup - have it in deposit box, fireproof safe, off-site or
not used then realize 2-3 years later that you would like that data
back.
Also, when SSD is dead - it is dead - unlike with hard drives where you
could attempt to read the data off platters in a recovery drive, if the
data is important enough data.
Context is important - SSD != HDD for all use cases or $$$ per GB
Exactly. The users decision needs to be based on what kind of data they
are working with and the various requirements posed by their use case
and workflow. SOHO users don't have the resources to go through a whole
R&D project so they often look these issues as black and white. Yes/No,
Better/Worse, etc.
SSD technology is actually still pretty new and in a state of constant
change. I can't give Rich a direct answer to his question because there
isn't one. But having talked to a lot of SOHO users about storage
strategies and backup I can say that CMR/PMR drives for the SMB/SOHO
market are still the best option. In some cases an SSD is used as a
working drive but the majority of the business data resides on on small
HDD RAID arrays.
Rich, you would use a S.M.A.R.T. reporting tool just like an HDD, but
the problem you will run into is that different SSD models have
different ways of reporting wear and tear. Over the years there have
been several implementations of wear leveling and each vendor fiddles
with it on a per-model basis. Firmware versions play into this reporting
as well so there is no "Do this to predict drive failure".
Out of curiosity, what is your backup strategy? Do you have any offsite
backups and are you following the 3-2-1 rule?
-Ben
Best,
-T
On Mon, 2020-11-02 at 09:16 -0800, Rich Shepard wrote:
On Mon, 2 Nov 2020, Ben Koenig wrote:
Most end users will experience catastrophic data loss when using
SSDs in a
redundant RAID system. This is because most end users just assume
that SSD
technology is simply better and make no attempt to monitor the
health of
the drive. In server environment a typical "flash array" includes
software
that monitors the wear to the drive, and proactive ejects the SSD
before
it actually fails.
Ben,
For a SOHO single-user with a 60G SSD holding the OS and a 2T HDD
holding
/home, /opt, and /data (all these, and /, incrementally backed up
daily),
what tool do you recommend to monitor the SSD's health?
Regards,
Rich
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