Western Digital Re hard drives are designed to handle up to 550 TB per year in any heavy application data center with the highest workload capabilities of any WD 3.5 hard drive. Up to 6 Gb/s transfer rates and sustained sequential data rates of up to 182 MB/s, deliver performance and reliability to any data center
environment. With up to 1.4 million hour MTBF, this high performance hard drive delivers durability and the highest level of reliability for 24x7x365 operation in storage environments. With capacities up to 4 TB WD Re series suit even the most demanding data center or cloud storage needs. Enterprise drives from Western Digital frequenntly undergo millions of hours of functional testing, and over 20 million hours of comprehensive Interoperability testing in an extensive array of server and storage systems.
Western Digital Re Drive
The specifications for The Enterprise Series include technologies such as: NoTouch ramp load, dual actuator design or dynamic fly height. The drive also includes: StableTrac, Multi-axis shock sensor and SED options. Sounds good, but what does this really mean?
NoTouch Ramp Load/Unload Technology
On any hard disk drive the recording head never touches the disk media (except at the parking zone). In the case of WD Re series this is achieved with NoTouch Ramp Load/Unload technology. This ensures significantly less wear to the recording head and media as well as better drive protection in transit.
Dual actuator technology
Western Digital hard drives with a capacity of 2TB and above now have a new head positioning system with two actuators that improve positional accuracy over the data track(s). The primary actuator provides coarse displacement using conventional electromagnetic actuator principles. The secondary actuator uses piezoelectric motion to fine tune the head positioning to a higher degree of accuracy.
StableTrac
Another new design from WD hard drives with capacities greater than 2TB is the StableTrac. The name StableTrac refers to design of the spindle motor shaft now secured at both ends to reduce system-induced vibration and stabilize platters for accurate tracking during read and write operations.
Multi-Axis Shock Sensor
Performs by automatically detecting the subtlest shock events and compensates to protect the data.
Self-Encrypting Drive (SED) Option
Utilizes an AES 256 bit encryption engine for Crypto erase capability, Western Digital SAS drives now support the industry standard commands of both the SCSI Sanitize command with Crypto Erase and the Trusted Computing Group (TCG) command set. It requires TCG-compliant host or controller support. Western Digital SATA drives now support both the T13 Sanitize Command and the ATA Password Support of the Secure Erase Unit (SEU).
WD Re On Test
We did a comparative test of three WD models – WD Re, WD Se and WD Red. Although WD Red is not an enterprise drive its performance significantly differed from other non-enterprise drives.
WD Re shows good scores in the test sequential access and the reading speed of 171.9 MB/s and 168.2 MB/s for writing, almost the same as WD Se, which is a little faster than the WD Red. The test confirms the quality of WD Re hard drives, and WD Red series which preformed well with speed averages of 140 MB/s; a really good result for home and business hard drives. Access time for random blocks reading is approximately the same in all three models, while writing is faster for WD Re by about 0.5s.
Overall WD enterprise drives once again proved themselves as WD puts these drives through extensive Functional Integrity Testing (F.I.T) prior to any product launch. This testing ensures the products consistently meet the high quality and reliability standards of the WD brand. Following a FIT test the Enterprise System Group (ESG) testing validates interoperability with HBAs, operating systems and drivers to ensure an even greater level of quality, reliability and peace of mind.
