On 2020-06-06 12:28 p.m., Matti Pulkkinen wrote:
Sam Varshavchik kirjoitti 6.6.2020 klo 17.37:
I've got rust here that's been spinning for ~12 years in my basement,
24x7, and I expect it to spin for a while longer.
I can't quite come to terms with the idea of storage with a suicide
clock, ticking away.
It's likely that, sometime in the next year, I wll be replacing that
hardware, but if that happens, the hardware will retire on my
schedule, instead of losing its own blue smoke, by itself.
All hardware fails eventually, and in that sense all hardware has a
suicide clock, as you put it. However, I have been using one of the
early model SSDs for almost ten years now, and I will probably
continue to use it for a good while yet. As for the drive I mentioned
earlier, a TBW rating of 100 TB is, in practical perspective, very high.
Since we were talking about the effects of swap, let's say you have a
four GB swap partition or file on your SSD with a TBW rating of 100
TB. Let's come up with a pretty extreme example and say your computer
swaps a ton and writes that partition full, twice every day. Assuming
writes to other partitions are relatively normal, say around four
gigabytes per day on average, this gives the drive an expected
lifespan of about two decades by my count. Given that, I really would
not worry about putting swap on an SSD. In consumer-grade hardware
under normal use, I would expect the electronics to rot before the TBW
comes up.
Just out of interest, why do you care about wear from using swap? Its a
lot cheaper and makes a much faster machine to add RAM up to the max,
and for most machines, swap will become essentially unused. That way,
unless you are running a disk-intense datacenter, the life of an SSD
will outlast both the machine and you. Or is the machine so overloaded
that you need more than max RAM?
--
John Mellor
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