Striping – Dell PowerEdge 6400 User Manual
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RTC
Real-time clock. Battery-powered clock circuitry inside the computer that keeps the date and time after you turn off the computer.
S
SCSI
Small computer system interface. An I/O bus interface with faster data transmission rates than standard ports. You can connect up to seven
devices to one SCSI interface.
SDMS
SCSI device management system
SDRAM
synchronous dynamic random-access memory
SEC
single-edge connector cartridge
sec
second(s)
serial port
An I/O port used most often to connect a modem or a mouse to your computer. You can usually identify a serial port on your computer by its 9-pin
connector.
shadowing
A computer's system and video BIOS code is usually stored on ROM chips. Shadowing refers to the performance-enhancement technique that
copies BIOS code to faster RAM chips in the upper memory area (above 640 KB) during the boot routine.
SMP
Symmetric multiprocess. Two or more processors connected via a high-bandwidth link and managed by an operating system, where each
processor has equal access to I/O devices. This is in contrast to the server kind of parallel processor where a front-end processor handles all I/O to
disks, terminals and local area network, and so on.
SRAM
Static random-access memory. Because SRAM chips do not require continual refreshing, they are substantially faster than DRAM chips. SRAM is
used mostly for external cache memory.
striping
In composite drivers with two or more physical drives, the drive array subsystem uses a method of data storage called striping. With this method,
data is divided into a series of pieces called blocks and each data block is stored on a different physical drive. When each drive contains a block
of data, the process starts over with the first physical drive. By carefully selecting the size of the data block, the chance that the information needed
can be read from or written to multiple physical drives at once is increased, greatly increasing the performance of the composite drive. See also
.
SVGA
Super video graphics array. See also
switch
See
.
sync negotiation
Sync negotiation is a SCSI feature that allows the host adapter and its attached SCSI devices to transfer data in synchronous mode. Synchronous
data transfer is faster than asynchronous data transfer.
syntax
The rules that dictate how you must type a command or instruction so that the computer will understand it.