Is rewriting of data [to avoid data rot] quicker on SAS-3 drive than on SATA III?
Posted: Wed May 10, 2023 1:06 am
Long story short:
I need to buy another huge [20 / 22 TB] archive drive for keeping data-stamped backups of all of my data, with intention of [also] keeping it offline when not creating new copies on it [just like I do with the already possessed ones]. But my main concern is preventing data fade - which I intend to do achieve with rewriting of all archive drives using freeware DiskFresh. But unfortunately that will be extremely time consuming thus disrupting for my day-to-day operations
And so, putting many other aspects aside *, the big question is:
if instead of 7200 RPM HDD using SATA III [6 Gbit/s] connection I would spend more money and bought the very same model but with SAS-3 [12 Gbit/s] controller - would then refreshing process of the same amount / type of data be quicker [in perfect conditions] by theoretically 100%? Aside from interface, the data sheet from manufacturer shows the same parameters for them, with only minuscule differences in terms of noise or power usage between them
* Or maybe, as one of my two main concerns is amount of days needed to rewrite such amount of data, I would be better off using SATA III- but SSD instead of SAS-3 HDD? Because this type of storage device [as I have read] do not have to rewrite every bit at least once a year, but merely needs to be powered on for something like a quarter of hour every quarter of year? Thus, putting aside my second main concern [which is the vast price difference], SSD would execute relatively instant refreshing when compared to an HDD- but at a cost of having greater risk of total lost of data due to an impeccably sensing timing power surge [as an HDD would loose only a tiny amount of data when being online during such event]?
[And yes, I know there are some technical caveats for using SAS devices]
I need to buy another huge [20 / 22 TB] archive drive for keeping data-stamped backups of all of my data, with intention of [also] keeping it offline when not creating new copies on it [just like I do with the already possessed ones]. But my main concern is preventing data fade - which I intend to do achieve with rewriting of all archive drives using freeware DiskFresh. But unfortunately that will be extremely time consuming thus disrupting for my day-to-day operations
And so, putting many other aspects aside *, the big question is:
if instead of 7200 RPM HDD using SATA III [6 Gbit/s] connection I would spend more money and bought the very same model but with SAS-3 [12 Gbit/s] controller - would then refreshing process of the same amount / type of data be quicker [in perfect conditions] by theoretically 100%? Aside from interface, the data sheet from manufacturer shows the same parameters for them, with only minuscule differences in terms of noise or power usage between them
* Or maybe, as one of my two main concerns is amount of days needed to rewrite such amount of data, I would be better off using SATA III- but SSD instead of SAS-3 HDD? Because this type of storage device [as I have read] do not have to rewrite every bit at least once a year, but merely needs to be powered on for something like a quarter of hour every quarter of year? Thus, putting aside my second main concern [which is the vast price difference], SSD would execute relatively instant refreshing when compared to an HDD- but at a cost of having greater risk of total lost of data due to an impeccably sensing timing power surge [as an HDD would loose only a tiny amount of data when being online during such event]?
[And yes, I know there are some technical caveats for using SAS devices]