Hello!

I read somewhere about a program that allows you to use SSD & HDD  in tandem. 

SSD caches data and speeds up HDD operation.

I want to try to combine SSD-512  +  HDD-4Tb for MegaSceneryEarth

I am looking for a program with minimal settings. Preferably with one button 🙂

There are HD with small buid-in SSD for catching. They are referred to as SHDD. To my knowledge there are no programs to link a 512MB SSD as a buffer with a HDD.

Only intel rst can make a 64gb partition of an ssd cache an hdd. You have to setup it in the bios. More that one button 😉

Edited August 5, 20196 yr by vincentrouleau

I definitely saw information about such a program. BIOS does not sound very inspiring))

Are you referring to PrimoCache ?

Greg

28 minutes ago, lownslo said:

Are you referring to PrimoCache ?

Greg

PrimoCache is a RAM-based disk cache.

Caching programs, in general, only accelerate disk reads when the data is repeatedly accessed, for example a block of code that has its instructions read over and over as the program reiterates through the same code segments.  The data, when first read, is placed into a faster medium (RAM or an SSD) and then the data is read from that faster medium for as long as the data remains in the cache and isn't replaced in due course by other data.  On the first read, the data transfer is actually slower than a direct read from disk (it has to first be placed into the cache, and then transferred to RAM).  Data that is read once and then not used again for a long time (in computer terms) doesn't benefit, because it has to have already been read once to get it into the cache, and the caching software can't predict that it will be needed in order to preload it into the faster cache media. 

MSFS-based flight sims don't really benefit from external disk caching except at startup when you're repeatedly reloading the sim (e.g. while working on a scenery).  They do, however, have their own look-ahead caching that predicts what scenery tiles need loaded next, and it reads that data into RAM well ahead of actually needing to use it.  That's why improved disk throughput generally doesn't help improve sim performance--it does the lookahead preload far enough in advance that even a slow HDD won't prevent the data from being there in memory when needed.  In the case of large photoscenery tiles, it appears that there are limitations in the sim's data structures that limit how much data can be preloaded as part of the lookahead, and there faster disk access does seem to help...but an external SSD cache will not improve on that, because it can't predict what data to load to the faster SSD.

Regards

Thanks for the detailed answer! Now I know more!

And what about  UltimateDefrag 6 ? 

Edited August 5, 20196 yr by BMW969

1 hour ago, BMW969 said:

And what about  UltimateDefrag 6 ?

That is to defragment HDD. Do NOT use on SSD ! If you are using your HDD for years, it can make a difference. Windows 10 will  do that automatically on a weekly basis (unless you cancelled that task)

 

Edited August 5, 20196 yr by willy647

6 hours ago, willy647 said:

That is to defragment HDD. Do NOT use on SSD ! If you are using your HDD for years, it can make a difference. Windows 10 will  do that automatically on a weekly basis (unless you cancelled that task)

 

Why  Do NOT use on SSD ?

1) Fragmentation does not affect an SSD's read/write performance.

2) It can (over a long period of time, longer than your lifespan) wear out the SSD.

Cheers!

Now it is clear. Thank)