HDD & SSD Myth?

[Wfz234]

Want to clarify some myth I hear about HDD and SSD:

 

1. I have two storage: SSD for system and HDD for data. Which one is better for my HDD? Let it turn off (spin down) when idle in some minutes? Or let it always spin without spin down at all? I search about this since many year ago and cant find answer until now. Then I choose to spin down after 1 hour idle. Don't know it's good or not.

2. Dont use SSD as backup for long time, because data can "gone" if SSD not used after some years. Is that true?

3. Sleep can harm SSD. It's my first time hearing about this. If it's true, the question is why?

[Dreckssackblase]

17 minutes ago, Wolfinch said:

Want to clarify some myth I hear about HDD and SSD:

 

1. I have two storage: SSD for system and HDD for data. Which one is better for my HDD? Let it turn off (spin down) when idle in some minutes? Or let it always spin without spin down at all? I search about this since many year ago and cant find answer until now. Then I choose to spin down after 1 hour idle. Don't know it's good or not.

2. Dont use SSD as backup for long time, because data can "gone" if SSD not used after some years. Is that true?

3. Sleep can harm SSD. It's my first time hearing about this. If it's true, the question is why?

1. If the short time it takes the drive to spin up doesn't bother you then there's no real harm in having the drive spin down when it isn't used. Otherwise you are just using power for nothing.

 

2. SSDs can lose the Data on them after several years of not getting powered as the cells that store the data can very slowly leak the charge that is stored in them. Having them connected to power once in a while will prevent that.

[Kilrah]

1) You'll get conflicting answers since there are multiple factors. Load/unload cycles cause wear, and some will recommend not to put HDDs to sleep for that reason. I leave them running all the time. There pretty much is no way to know the impact on a specific drive model, so...

2) See above, but again it's pretty much impossible to know how long data will actually be retained. See manufacturer's specs if there are some, knowing that would be a minimum and maybe it'll be just fine after twice as long...

3) Not that I know of. 

[MetaDrow]

1. If the HDD is being accessed (woken up) multiple times, then leave it spinning because of wear from spinning down and spinning back up. Cursed WD Green HDD line had high failure rate because of that, (forced 8 seconds idle timer, spin down, park head, Windows requests something 2 seconds later, spin back up, repeat until drive dead). Most HDDs are 5W or less during spinning idle so its not like its sucking up power. 

2. Like Kilrah mentioned
3. Have not heard anything like that, SSDs have their own built-in protections so probably not an issue

[Wfz234]

Thanks for the  answers, its help

[Wfz234]

Just curious, if HDD used as system (Windows 10). It always spin or sometimes turned off?