Seagate is strengthening its external storage portfolio for small business today with the announcement of three new BlackArmor product offerings. The first is a network attached storage appliance called the BlackArmor NAS 220, which will be released in 2 and 4TB configurations, and is designed to provide data protection for up to 20 computers.

It can automatically and continuously back up networked computers, features two USB 2.0 ports to connect external drives, printers or an UPS, and sports two hard disk drives that can be configured with RAID 0 and 1 options but are not hot-swappable. The NAS 220 will be available in July, priced at $430 or $700 depending on storage capacity.

Also new are two BlackArmor external hard drives. The WS 110 includes a single 1TB ($159.99) or 2TB ($309.99) external hard drive with backup and encryption software, plus eSATA and USB 2.0 interfaces. The PS 110 is smaller (500GB) and lighter than the WS 110, and goes for $159.99.