The WD Elements 8TB has a HGST He8, Helium. The WD Elements 10TB is the WD Red Plus Air model. The 12TB and 14TB I am not 100% sure, but I think it's HGST Helium again. The 2-6TB models have WD SMR drives (might be Red SMR), avoid like the plague. Im at a bit of a crossroads here and was hoping for some advice. Right now there is only about 3tb of data on the entire nas while it reshapes. But i had about 5tb more ready to load onto the nas soon as it was going to complete. My initial thought was to buy another older WD60EFRX and soon as the raid reshape was completed I would pull the newer SMR drive and put in the WD60EFRX and let the system repair. When recording video (especially where most of it will never be watched), a corrupt frame or two likely doesn't matter (exception:Murphy's law states it will be a key frame at the beginning of the incident at the only time when the suspect's face is in clear view and several seconds gets trashed). I noticed that they didn't say they would STOP using SMR drives in the line that is supposed to be for NAS (the Red line) - just that you should know & buy the Red Pro line if you are concerned about it. Sheesh.... https://www.tomshardware.com/news/sneaky-marketing-toshiba-seagate-wd-smr-drives-without-disclosure

If your drive follows WDC model naming convention, then first you would have to take all the letters and numbers after the dash, for example WD40EFRX-68L0BN1 would transform to 68L0BN1.This 7200RPM desktop hard drive is specifically designed for maximum performance. It delivers exceptional speed and responsiveness which make it ideal for enterprise-level applications, intensive data processing, and tasks that demand the highest level of performance and reliability. Interface:

I am in the looking to replace my WD Red 3TB drives with WD Red Plus 6TB drives (making sure CMR tech is used). Now i noticed that a new WD Red Plus line has entered the market in 2021, namely the EFZX series with 128mb cache instead of 64mb cache currently used by the EFRX series. It is important to choose a drive purpose-built for RAID-optimized NAS systems to ensure optimum performance and preserve your valuable data. Take the following into consideration when choosing a hard drive for your NAS: Join the Inner Circle? The Inner Circle is a community of like-minded individuals who are passionate about the same things you are. You’ll have the opportunity to ask questions and get replies from me and other Inner Circle members who are dedicated to helping each other out. if you are still going around in circles and need direct consultation, we have just started providing one-hour consultations via zoom. You can find out more about them via the link below:Compatibility: Unlike desktop drives, WD Red hard drives are specifically designed and tested for NAS and include NASware™ technology which fine tunes drive parameters to match NAS system workloads for optimum performance. For those googling for the answer whether combining WD EFRX and WDEFZX (WD40EFRX and WD40EFZX in my case) would be safe. But it is not recommended to use SMR drives for applications with significant load (for example in NAS boxes or for 24x7 use). I have 2TB, 4TB and 6TB drives. If a drive fails, which tends to be one of the older 2TB drives I have replaced it with one of these 6TB drives. The 3.5-inch form factor ensures easy integration into desktop setups, delivering reliable performance, ample storage space, and seamless compatibility. They are built to withstand a lot of wear and tear, making them a good choice for long-term storage. RPM: