secondary storage


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secondary storage

[′sek·ən‚der·ē ′stȯr·ij]
(computer science)
Any means of storing and retrieving data external to the main computer itself but accessible to the program.

secondary storage

(storage)
Any non-volatile storage medium that is not directly accessible to the processor. Memory directly accessible to the processor includes main memory, cache and the CPU registers. Secondary storage includes hard drives, magnetic tape, CD-ROM, DVD drives, floppy disks, punch cards and paper tape.

Secondary storage devices are usually accessed via some kind of controller. This contains registers that can be directly accessed by the CPU like main memory ("memory mapped"). Reading and writing these registers can cause the device to perform actions like reading a block of data off a disk or rewinding a tape. See also DMA.

Programs and data stored in secondary storage must first be loaded into main memory before the processor can use them.
References in periodicals archive ?
Arrow ECS ANZ, the leading value-add distributor for Australia and New Zealand, has partnered with Cohesity to deliver its hyperconverged secondary storage solutions to enterprises in the region.
In such a case, he will use the ILM software to bring the server's file volume down to 50 percent or 60 percent by manually migrating files to the secondary storage server, which accommodates more than 4 million files.
In summary, secondary storage presents new challenges to protect the media, reduce access risk, and further drive down management costs.
iSCSI is succeeding because customers are asking for it--not only for secondary storage, for which certain products are specifically designed, but primarily as a robust, lower cost, simpler-to-manage alternative to Fibre Channel.
In either case, when access to a migrated file is requested, the HSM software retrieves it from the secondary storage and delivers it to the user or application, just as if it were stored in its original location.
Since this secondary storage must still be managed, the overall return on the ILM investment will be considerably less than anticipated.
With the automatic migration of aging data from primary storage to secondary storage, the overload on Exchange servers is alleviated.
Designed exclusively for small and medium enterprises (SME), the iQstor iQ2880 storage solution provides high performance and value for primary and secondary storage applications.
To fully understand the value of MAID, let's first examine the use of traditional RAID in an array designed for secondary storage needs, such as backups.
Automatic failover from primary storage director to secondary storage director
from primary to secondary storage and from secondary storage to long-term retention).
Digi-Data Corporation, an innovator and developer of storage solutions for mid-tier, secondary storage and fixed content markets, announces an agreement with JMR Electronics to assume all of its systems business in an OEM deal with the Chatsworth-based enclosure manufacturer.