Using SANs and NAS

Colophon

Our look is the result of reader comments, our own experimentation, and feedback from distribution channels. Distinctive covers complement our distinctive approach to technical topics, breathing personality and life into potentially dry subjects.

The animals on the cover of Using SANs and NAS are a pika (top) and a hyrax (bottom). The pika is of order Lagomorpha, the rabbit family, while the hyrax, order Hyracoidea, is an ungulate and has whales and elephants in its tree. Their nonrelationship is much like SANs and NAS: they look a lot a like, and many people confuse them, but they’re actually two completely different animals.

The northern pika (Ochotona alpina) is a small short-legged creature with rounded ears, no visible tail, sharp curved claws and a grayish patch on the neck. It lives in Siberia, Mongolia, northeast China, and Japan. Grass and plant stems form its diet, and it gathers extra food in late summer and piles it to use in winter. The pika spends considerable time sunning itself on a favorite lookout rock, against which its salt-and-pepper coat is difficult to distinguish. The pika is alert and has excellent hearing and vision, which helps protect it from predators. They emit a sharp, high-pitched whistle to alert other pikas when predators are detected.

The rock hyrax (Procavia capensis) as per its name, lives on rocky hillsides and is an agile climber. It’s a small, solidly built animal with a stump tail, short ears and legs, and gray-brown to black in coloring. ...