The Seagate ST4000NM0023 4TB 7.2K 6Gb/s 128MB 3.5" SAS Hard Drive is a high-performance internal hard drive suitable for computers and servers. With a storage capacity of 4TB and a rotation speed of 7200 RPM, this drive offers fast and reliable data storage and retrieval. The Seagate Constellation product line ensures quality and performance, while the SAS interface provides efficient data processing. Ideal for organizations and individuals looking to enhance their storage capabilities, this hard drive is a dependable choice for expanding storage capacity in a compact 3.5-inch form factor.