WD Red 3TB 3.5 Inch NAS Internal Hard Drive - 5400 RPM - WD30EFRX

Product Information

The Western Digital Red offered the best sequential transfer speeds out of the group of low-power hard drives. It measured 143MB/s read and 142MB/s write, well above the older 3TB Caviar Green which only managed 119MB/s read and 119MB/s write. Reliability: Desktop drives aren’t typically designed for the demands of an always-on NAS environment. WD Red hard drives are designed to perform under tough conditions encountered in high-intensity 24x7 multi-user NAS environments. Recently, there has been a discussion regarding the recording technology used in some of our WD Red hard disk drives (HDDs). We regret any misunderstanding and want to take a few minutes to discuss the drives and provide some additional information. The obvious question may be then, what’s wrong with the WD Greens and other low power drives that have been performing NAS duty to this point? The answer is really about projected use. The WD Green for instance, while the leading low power drive on the market, wasn’t designed for the 24×7 access requirements that NAS systems require. The WD Red was engineered specifically for this duty, complete with customized NASware firmware which includes critical features like intelligent error recovery controls that prevent drives from dropping off the RAID due to long recovery cycles. The drives also are engineered with "3D Active Balance technology" which tunes the drive to eliminate vibration leading to improved reliability and overall performance.

Red Plus” branding for non-SMR hard Western Digital adds “Red Plus” branding for non-SMR hard

Ideal para sistemas NAS para home offices, usuários avançados, pequenas e médias empresas e sistemas e concumidor/comercial WD Red Plus is the new name for conventional magnetic recording (CMR)-based NAS drives in the WD Red family, including all capacities from 1TB to 14TB. These will be the choice for those whose applications require more write-intensive SMB workloads such as ZFS. WD Red Plus in 2TB, 3TB, 4TB and 6TB capacities will be available soon. From the front the 3TB Red has a standard SATA data and power connection with 8 service pins generally reserved for debugging modes and changing drive settings for advanced users.There's also a Red Pro line targeted to maximum-performance applications. This line is unchanged—it existed with the same branding before the SMR fiasco, and it still exists with the same branding and same models today. Understanding SMR limitations

WD Red NAS HDD - Western Digital Product Brief: WD Red NAS HDD - Western Digital

WD Red hard drives and SSDs have been compatibility-tested by major NAS system providers with their NAS systems and components. The next profile looks at a file server, with 80% read and 20% write workload spread out over multiple transfer sizes ranging from 512-byte to 64KB.

Although all three remaining major hard drive vendors—Western Digital, Toshiba, and Seagate—have "submarined" SMR disks into existing channels without doing much to notify customers about it, only Western Digital has done so with disks designed specifically for NAS, or Network Attached Storage, use.