WD Red 2TB 3.5 Inch NAS Internal Hard Drive - 5400 RPM - WD20EFRX

Product Information

Error recovery controls: WD Red™ NAS hard drives are specifically designed with RAID error recovery control to help reduce failures within the NAS system. 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. False. Various sized drives come with various size caches. You can’t instantly detect SMR/CMR by cache size. Reliability: The always-on environment of a NAS or RAID is a hot one, and desktop drives aren’t typically designed and tested under those conditions like WD Red™ is. The primary difference between the two 2TB CRM drives is the rotation speed (7200 vs 5400). Not sure if that will be an issue. Tend to doubt it; although performance will likely (Don’t really know) be limited to 5400 rpm performance if you have a Raid 1 configuration

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The easiest way to detect whether it is a SMR drive is the cache size. Old drives (WDx0EFRX) had 64MB cache whereas new My Cloud Ex2 was equipped with 2 x WD20EFRX - 68EUZN0 (2TB disk, 64mb cache) configured in Raid 1; after searching online i have found that there is a new disk WD20EFAX with 2TB and 256mb cache.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. The first indicator to detect whether it is a SMR drive is the cache size. But do look for letters EFAX in the serial number this would mean SMR. Old drives (WDx0EFRX) had 64MB cache whereas new replaced drives (WDx0EFAX) feature 256MB. You can also read the serial number on the disk itself and compare it to a table bellow.

WD Red NAS Hard Drive, Internal Hard Drive (2 TB to 6 TB WD Red NAS Hard Drive, Internal Hard Drive (2 TB to 6 TB

Perpendicular magnetic recording (PMR) and shingled magnetic recording (SMR) are technologies used to physically store bits of data onto a hard disk drive (HDD). For HDD manufacturers, one of the most important concerns is areal density, which is the number of bits of data that can be recorded onto a magnetic disk. Areal density is measured by the number of bits or gigabits per square inch, with the higher values allowing for greater storage using the same amount of disk space. SMR offers larger drive capacity than the traditional PMR because SMR technology achieves greater areal density. There?셲 a leading edge WD Red drive for every compatible NAS system to help fulfill your data storage needs.WD20EFRX-68EUZN0 Technical Specifications Western Digital Red 2TB 5400RPM SATA 6Gbps 64MB Cache 3.5-inch Internal Hard Drive Do right by your NAS and choose the drive purpose-built for NAS with an array of features to help preserve your data and maintain optimum performance. Take the following into consideration when choosing a hard drive for your NAS: Not just any drive will do. Get up to 48TB of capacity in your 8-bay system and with WD’s exclusive NASware 3.0 technology, you can optimize each and every drive. Built into every WD Red™ hard drive, NASware 3.0’s advanced technology improves your system’s storage performance by increasing compatibility, integration, upgradeability, and reliability.