Slowly the use of hard drives is detrimental to the fast-paced SSDs. However, in business and NAS environments are still used because they provide a good dose of what they call, allowing you to create RAID environments that are closer and more secure.
Unlike conventional solid drives with CMR technology, SMR drives allow for high variability Data on plates but they are interchangeable they are slow and cause problems in RAID environmentsTherefore, it is the right color to use in these areas. And, worst of all, is that these three producers they have been selling records with this technology without reporting, skipping and saving a good piece of production costs.
What problems do SMR truck drivers have?
SMR technology is new and allows manufacturers to maximize storage capacity in their pockets compared to standard CMR technology, but this approach brings a decline. How to generate data tracks on desks when using SMR technology causes the writing tracks to be "crossed" with each other, allowing for a higher amount of data but access to these and then gradually decreased
In addition to very low performance, SMR disks have other problems precisely when used in RAID environments, which are common in both organizations and NAS environments, even at home, and this is where this hard disk type is installed. RAID may not give problems at first, though when rebuilding RAID provide error rate data and does not allow it to do so.
This means that users with a RAID system with SMR disks can be exposed to data loss, and this is very bad and that is completely unjustified by manufacturers, because if they reported this, users would probably not buy these hard drives for use in RAID.
How do you know if you have an SMR disk?
Right in the next section list all the heavy vehicles involved, but if you want to test it for yourself there is an additional way to do it. Obviously – we have to confirm this for now – SMR hard drives have TRIM support and CMRs have not. For NAS-based LASx systems you will need to open the program bundle and enter the following command:
hdparm -l / dev / sda | grep TRIM
Where to change "sda" for "sdb", "sdc", etc. depending on the hard drive number on which the hard disk is installed.
It wasn't just WD, Toshiba and Seagate adding to this shame
WD has already acknowledged that some of its WD Red hard drives, designed specifically for the NAS, use SMR technology and not CMR without warning (specifically all WD Reds between 2 and 6 TB). Now Toshiba and Seagate have been found using the same practice in some of their hard drives, and in particular models where this technology has been made available without reporting are the following (currently, it is not determined that many models are available):
- WD Red 2-6TB (all models)
- Seagate Barracuda 8TB (ST8000DM004)
- Seagate Desktop 5 TB (ST500DM000)
- Toshiba P300 4TB (HDWD240UZSVA)
- Toshiba P300 6TB (HDWD260UZSVA)
As you can imagine, This practice is completely illegal and in fact some users are already planning on sites like Reddit to file a class lawsuit against the manufacturers. If manufacturers were to inform users that they were using this advanced technology, which creates RAID, users would have preferred other types of hard drive for their applications.
In addition, using this technology lowers the production cost of hard drives, but three manufacturers continue to sell them at regular prices for us like CRM, that is, that. they benefit from it and as a result the situation is worse.
WD defends itself against the claim, urging that other models be purchased
WD was the first to be "discovered" through this fraud, and was the first to make the allegations:
“SMR is an tried and tested technology that enables us to keep up with the growing volume of personal and commercial data. We are constantly naming progress. SMR technology is used in different ways: SMR-controlled Drive (DMSMR) on the device itself, in the form of small WD Red Drives (2-6TB) and Host Managed SMR, used in high-speed data center applications. Each application works differently from the other, from the personal computer to the world's largest data centers. ”
WD explains that its wide range of WD Red is made possible by low-cost domestic and small business NAS, making this technology a viable option. And worst of all, that if we want to not have these problems we have to buy high class records such as WD Red Pro or WD Gold. It's all scars.