[. . . ] WD RE SAS Enterprise Hard Drives WD RE SAS hard drives are engineered to offer data-hungry SAS storage systems the massive capacity they need without compromising top-of-the-line performance. [. . . ] Effective maximum SAS 6 Gb/s transfer rate calculated according to the SAS specification published by the INCITS T10 organization as of the date of this specification sheet. 2 WD hard drive products manufactured and sold worldwide after June 1, 2006, meet or exceed Restriction of Hazardous Substances (RoHS) compliance requirements as mandated by the European Union for electrical and electronic products. The RoHS Directive 2002/95/EC of the European Parliament, which is effective in the EU beginning July 1, 2006, aims to protect human health and the environment by restricting the use of certain hazardous substances in new equipment, and consists of restrictions on lead, mercury, cadmium, and other substances. 3 Controlled unload at ambient condition 4 100% workload at 50°C on base casting. 6 No non-recoverable errors during operating tests or after non-operating tests. 7 Sound power level. Western Digital, WD, the WD logo, and Put Your Life On It are registered trademarks in the U. S. [. . . ] 2879-771386-A00 Jan 2011 For service and literature: http://support. wdc. com www. westerndigital. com 800. ASK. 4WDC 800. 832. 4778 +800. 6008. 6008 00800. 27549338 +31. 880062100 North America Spanish Asia Pacific Europe (toll free where available) Europe/Middle East/Africa [. . . ]