The HP 308558-001 is a 146GB 10,000 RPM Ultra-320 SCSI hard drive in 3.5-inch low-profile form factor with 68-pin LVD connector. This non-hot-plug drive delivers sustained throughput suitable for legacy enterprise storage systems and external RAID arrays built on SCSI architecture. The 10K RPM spindle speed provides performance typical of mid-range server and workstation storage from the 2000s era. Compatible with HP ProLiant servers, StorageWorks arrays, and third-party SCSI enclosures supporting Ultra-320 protocol. Typical applications include archival storage, secondary backup arrays, and replacement capacity for existing SCSI-based SAN environments. The 1.0-inch profile fits standard 3.5-inch bays. Unit has been tested and guaranteed; available for immediate quote.