411089-B21 300GB 15000RPM Ultra-320 SCSI Hot-Pluggable LVD 80-Pin 3.5-inch Hard Drive by HP
Device Type: Hard drive - hot-swap
Capacity: 300 GB
Interface: Ultra320 SCSI
Connector: 80 pin Centronics (SCA-2)
Width: 1 in
Drive Transfer Rate: 320 MBps (external)
Spindle Speed: 15000 rpm
Interfaces: 1 x Ultra320 SCSI - 80 pin Centronics (SCA-2)
The Small Computer System Interface (SCSI) is a set of parallel interface standards developed by the American National Standards Institute (ANSI) for attaching printers, disk drives, scanners and other peripherals to computers. SCSI 411089-B21.
SCSI required the use of an adapter card, unlike ATA, where the adapter is built into the device. SCSI is also the foundation of SAS and iSCSI, two common uses of SCSI technology in enterprise storage environment. SCSI 411089-B21
Recent physical versions of SCSI?—?Serial Attached SCSI (SAS), SCSI-over-Fibre Channel Protocol (FCP), and USB Attached SCSI (UAS)?—?break from the traditional parallel SCSI bus and perform data transfer via serial communications using point-to-point links. Although much of the SCSI documentation talks about the parallel interface, all modern development efforts use serial interfaces. Serial interfaces have a number of advantages over parallel SCSI, including higher data rates, simplified cabling, longer reach, improved fault isolation and full-duplex capability. The primary reason for the shift to serial interfaces is the clock skew issue of high speed parallel interfaces, which makes the faster variants of parallel SCSI susceptible to problems caused by cabling and termination
Hot plugging (also called hot swapping) is the ability to add and remove devices to a computer system while the computer is running and have the operating system automatically recognize the change. This is useful when a system component fails as it enables a new device to be installed without system downtime.
Hot swapping is the term given to the process of replacing a key component of a computer system while it’s still running. Essentially you change a specific part without having to switch it or the whole system off. This enables a business to continue utilising the system without experiencing any kind of downtime.
This may sound like a relatively strange process given that we are all told to power down devices before making changes; but it is highly effective when changing the components a build. 411089-B21 Hot Swap Hard Drive.
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