Seventh Generation of Customised Surveillance Storage The seventh-generation 4TB Seagate Surveillance HDD (formerly SV35 Series™) addresses the need for high-resolution cameras & camera counts, & ensures cost-effective performance & durability in always-on surveillance systems. 4TB of storage capacity supports up to 16 drives & 32 cameras per system Precision-tuned for surveillance workloads with high write work cycles Reliably performs in multi-drive systems with RAID support Rotational vibration sensors for reliable performance Customise power settings to best support motion-activated cameras with Idle 3 support