Western Digital Red HDD 3000GB Serial ATA III internal hard drive Red, 3.5", 3000 GB, 5400 RPM, Serial ATA III, 64 MB, HDD

Product Information

Regarding https://en.wikipedia.org/wiki/Direct_Media_Interface this bus can achieve around 2 GB/s (in both side ?) Active Balance™ Plus - Our enhanced dual-plane balance control technology significantly improves the overall drive performance and reliability. Hard drives that are not properly balanced may cause excessive vibration and noise in a multi-drive system, reduce the hard drive life span, and degrade the performance over time. (EFRX models only) Today the new drive arrived and looks like the other wd red to me, I inserted it in my nas and started to rebuild the volume. After that I discovered that my drive is not compatible (at least from the synology popup) because it's a SMR drive (WD30EFAX), same old story here in this sub.. I guess. Western Digital Red WD30EFRX 3000GB, 3.5", 6.0 Gbps, IntelliPower, Network Attached Storage, Serial ATA Hard Disk Drive - Brand New It’s an interesting decision – WD is expanding their low-power 3.5" hard drive offerings with a second line at the same time Seagate exits the "green" market, claiming low-power drives aren’t really all that beneficial or quite frankly, special. The Western Digital Red family of hard drives is designed for the 1 to 6 bay SOHO NAS space, which is about as specialized as it gets. WD has several features that they’re touting as critical for the NAS user including; NASware specialized firmware, Intellipower low power spindle, robust NAS compatibility list, three year warranty and a dedicated WD Red 24×7 customer support line (1-855-55-WDRED if you need them).

False. Various sized drives come with various size caches. You can’t instantly detect SMR/CMR by cache size. 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. 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. PS: Even with a 12 SSD pools it's hard to handle more than 2GB/s READ/WRITE throughtput within a ZFS Pool, so it can be enough for your pool.The easiest way to detect whether it is a SMR drive is the cache size. Old drives (WDx0EFRX) had 64MB cache whereas new We tested our batch of eight WD Red hard drives in varying configurations ranging from single drive to 2, 5 and 8-bay Synology NAS deployments.In terms of performance, the WD Red did very well not only as a single drive, but increased proportionally as we scaled up the testing in the Synology DiskStations. With link-aggregation we measured read speeds in excess of 200MB/s (8-bay) and write speeds coming in just below 170MB/s (5-bay). Random I/O performance with each model in RAID was good, showing a nice linear increase in speed with each larger RAID array. In both active and idle settings, we found power consumption to be very good, with even the eight-bay DS1812+ filled with Reds measuring under 60 watts under load and 55 watts at idle. On the other side, you have also 2 PCIe slots that use the PCH and if you use it, it's maybe the same.

We also measured the power consumption of each Synology model filled with Western Digital Red hard drives through our Eaton Advanced Monitored ePDU, which monitors devices at the outlet level. The eight-bay Synology DS1812+ used 59 watts during active write activity and 55 watts at idle, while the five-bay DS1512+ used 49 watts under load and 44 watts at idle, while the small two-bay DS712+ needed just 31 watts under load and 24 watts at idle. Professional solutions - Designed specifically with SMB customers in mind, the WD Red family has expanded with the addition of WD Red Pro, which is available for the 8 to 16 bay medium to large-scale NAS environments. With capacities from 2 to 4 TB, WD has also gone to great lengths to ensure a great user experience. They’ve worked with Synology, QNAP and other NAS providers to make sure the WD Red was qualified as compatible with these popular systems and host chipsets. The drives also offer a good blend of performance and power consumption, which is key given the always on nature of NAS drives. For that little extra push on the performance side, the drives feature a 64MB cache that’s been migrated from DDR to DDR2, which should be twice as fast. If you have existing RAID with old 2TB/3TB/4TB/6TB EFRX CMR drives and you need a replacement drive or you want to expand your RAID with an extra drive make sure you get a right drive. You may want to get a spare drive before these old EFRX drive are not available any more.With the new Red hard drives designed for 24/7 home and SMB NAS usage, Western Digital still found ways to improve the power consumption of their new low-power hard drive over previous generation low-power hard drives. Across the board, the new Western Digital Red offered the lowest activity and idle power values. Startup power was slightly higher than the older Caviar Green models, but not by much. Designed specifcally for home and small office NAS systems - WD Red is the only hard drive for 1-8 bay systems For a long time there was an obsession with ashift=9 vs ashift=12 because of various reasons. This has an impact on a variety of things including space consumption and performance. Using ashift=9 on 4Kn is particularly bad for performance. Several different things have been done over the years to try to make this work correctly. I don't recall what the exact current strategy is, but I believe it tries to optimize correctly.