Abstract: In an aspect, the invention features a method of storing data in a digital data storage system that includes a plurality of disk drives. The method involves receiving data at the data storage system; compressing the received data to generate a compressed version of the data; storing the received data on a first set of disk drives among the plurality of disk drives; and storing the compressed version of the received data on a parity disk drive so that the parity drive stores data that is redundant of data that is stored on the first set of drives.

Abstract: This invention is a printed circuit card latching and stiffening assembly with an elongated stiffener member located on the top edge of the printed circuit card. A latch is pivotally attached to the stiffener member. At least one compliant clip is mounted on the stiffener member so that the clip may be slid to engage the pivotal latch in a locked position. The latch also includes a slot for engaging an electronic enclosure structure, such as a card cage. The slot enables the card to be cammed into the base of the card cage when the pivotal latch engages the sliding compliant clip. The latching and stiffening assembly further includes at least one pivotal member which may pivot from the stiffener member to engage a side of the printed circuit card further stiffening the card.