This is an SSD drive with a 960 GB storage capacity. The form factor is 2.5", which is common for SSD drives.
HPE MSA 960GB SAS 12G Read Intensive SFF (2.5in) M2 3 Year Warranty SSD
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HP Msa 960Gb
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HPE MSA 960GB SAS 12G Read Intensive SFF (2.5in) M2 3 Year Warranty SSD