Keep VIAVI OBS1 GigaStor systems operational with the G5-DRV-OS-OBS1-20-40-60G Gen5 960 GB M.2 OS drive. This part is specified as an operating system drive and spare for OBS1 GigaStor 20G, 40G, and 60G configurations, making it a practical replacement component for teams that need fast restoration and platform consistency. A dedicated OS drive separates system software from primary application or capture storage, which helps simplify maintenance and replacement workflows. In appliance environments, that separation matters: it reduces recovery complexity, supports faster service events, and keeps the platform aligned with the original VIAVI configuration. The Gen5 M.2 format positions this drive for modern PCIe-based systems, while the 960 GB capacity provides ample room for operating system files, logs, and platform software. For organizations maintaining VIAVI test and monitoring infrastructure, this is the kind of spare that protects uptime by matching the exact deployment profile rather than forcing a generic substitute.