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Is 80GB too small?
Is 80GB too small?
and hope for the best
I love how people buy SSD's and then proceed to disable/move everything that benefits from the SSD most. Guess all the limited lifetime scare mongering when they first came out got a little out of hand. Honestly, if you are still using the same SSD by the time it's beginning to show serious signs of wear, you couldn't afford it in the first place.
15GB a week at absolute max.
I used to worry about stuff like that till I read anandtechs ssd article which basically said in vast majority of cases the ssd will become unusable because the nand loses its charge much before the average person goes through all its write cycles. (Supposedly it loses its charge after 10 years).
No, that does not make any sense, and is not what Anand wrote. I'm not sure what you meant, unless you are possibly confusing data retention time with endurance.
It's also possible for a flash cell to lose its charge over time (albeit a very long time). Intel adheres to the JEDEC spec on how long your data is supposed to last on its SSDs. The spec states that if you've only used 10% of the lifespan of your device (cycles or GB written), then your data needs to remain intact for 10 years. If you've used 100% of available cycles, then your data needs to remain intact for 1 year. Intel certifies its drives in accordance with the JEDEC specs from 0 - 70C; at optimal temperatures your data will last even longer (these SSDs should operate at below 40C in normal conditions).
My personal desktop sees about 7GB of writes per day. That can be pretty typical for a power user and a bit high for a mainstream user but it's nothing insane. If I never install another application and just go about my business, my drive has 203.4GB of space to spread out those 7GB of writes per day. That means in roughly 29 days my SSD, if it wear levels perfectly, I will have written to every single available flash block on my drive. Tack on another 7 days if the drive is smart enough to move my static data around to wear level even more properly. So we're at approximately 36 days before I exhaust one out of my ~10,000 write cycles. Multiply that out and it would take 360,000 days of using my machine for all of my NAND to wear out; once again, assuming perfect wear leveling. That's 986 years. Your NAND flash cells will actually lose their charge well before that time comes, in about 10 years.
.....For a desktop user running a desktop (non-server) workload, the chances of your drive dying within its warranty period due to you wearing out all of the NAND are basically nothing. Note that this doesn't mean that your drive won't die for other reasons before then (e.g. poor manufacturing, controller/firmware issues, etc...), but you don't really have to worry about your NAND wearing out.
I used to worry about stuff like that till I read anandtechs ssd article which basically said in vast majority of cases the nand loses its charge much before the average person goes through all its write cycles. (Supposedly it loses its charge after 10 years).
Is 80GB too small?
I couldn't find the exact article but here is a quote from anandtech that goes along the same lines.
What the article said was that your nand would loses its charge (ability to retain data) before the average person used all the write cycles on the drive.
Problem is that time goes down (10 year retention time) the more you write to it, personally I have some files I have never accessed in over 7 years (pictures, documents) so to me personally that becomes unusable once you start getting up there in write cycles because the retention goes down. (I guess they (the files) only have a year and 1/2 since I copied them on my ssd off my hdd, but after that I haven't touched them and probably wont till I need too) I guess that is for me personally since I keep alot of data for along time that I don't ever touch or open. For someone else they may not care if the drive is at the point it will only retain it for 5 years or less. Now I don't know if it's in a drives firmware to refresh old data or not, never seen it talked about.The only "charge loss" issue I'm aware of is an MLC cell losing data BETWEEN writes. If you rewrite the cell it is recharged. This 10 year "loss of charge" only applies if the data in the cells is never refreshed or overwritten, and only makes that 10 year old cell unreadable not unusable.
Problem is that time goes down (10 year retention time) the more you write to it, personally I have some files I have never accessed in over 7 years (pictures, documents) so to me personally that becomes unusable once you start getting up there in write cycles because the retention goes down. (I guess they (the files) only have a year and 1/2 since I copied them on my ssd off my hdd, but after that I haven't touched them and probably wont till I need too) I guess that is for me personally since I keep alot of data for along time that I don't ever touch or open. For someone else they may not care if the drive is at the point it will only retain it for 5 years or less. Now I don't know if it's in a drives firmware to refresh old data or not, never seen it talked about.