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Secondary storage (also known as external memory or auxiliary storage) differs from primary storage in that it is not directly accessible by the CPU. The computer usually uses its input/output channels to access secondary storage and transfer the desired data to primary storage.
- Direct-access storage device
A direct-access storage device (DASD) (pronounced / ˈdæzdiː...
- Direct-access storage device
A direct-access storage device (DASD) (pronounced / ˈdæzdiː /) is a secondary storage device in which "each physical record has a discrete location and a unique address". The term was coined by IBM to describe devices that allowed random access to data, the main examples being drum memory and hard disk drives. [1]
Computer data storage or digital data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers.
2 Αυγ 2020 · Also called external memory, secondary memory, and auxiliary storage, a secondary storage device is a non-volatile device that holds data until it is deleted or overwritten. Secondary storage is about two orders of magnitude cheaper than primary storage.
Secondary storage vs. primary storage. Secondary storage data resides on non-volatile memory (NVM) devices such as SSDs, HDDs, tape drives and optical media. The devices might be hosted on premises, in data centers, at co-location facilities or by service providers on their cloud platforms.
In computing, external storage refers to non-volatile (secondary) data storage outside a computer's own internal hardware, and thus can be readily disconnected and accessed elsewhere.
15 Αυγ 2022 · A secondary storage device refers to any non-volatile storage device that is internal or external to the computer. It can be any storage device beyond the primary storage that enables permanent data storage.
