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Abbreviation for Structured Query Language.

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In composite drivers with two or more physical drives, the drive array subsystem uses a method of data storage called strip- ing. 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 block, block size, and RAID.

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Abbreviation for static random-access memory. Because SRAM chips do not require continual refreshing, they are sub- stantially faster than DRAM chips. SRAM is used mostly for external cache memory.

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Abbreviation for super video graphics array. See also VGA.

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See parameter.

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Sync negotiation is a SCSI feature that allows the host adapter and its attached SCSI devices to transfer data in synchro- nous mode. Synchronous data transfer is faster than asynchronous data transfer.

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The rules that dictate how you must type a command or instruction so that the com- puter will understand it.

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As the main circuit board, the system board usually contains most of your filer’s integral components, such as the micro- processor, RAM, and expansion-card connectors.

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System diskette is a synonym forbootable diskette.

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System memory is a synonym for RAM.

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System Setup program options allow you to configure your computer’s hardware. Some options in the System Setup program require that you reboot the computer in order to make a hardware- configuration change. Because the Sys- tem Setup program is stored in NVRAM, any options that you set remain in effect until you change them again.

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When you start Windows, it consults the system.ini file to determine a variety of options for the Windows operating environment. Among other things, the system.ini file records which video, mouse, and keyboard drivers are installed for Windows.

Running the Control Panel or Windows Setup program may change options in the system.ini file. On other occasions, you may need to change or add options to the system.ini file manually with a text editor, such as Notepad.

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Abbreviation for Transmission Control Protocol/Internet Protocol.

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Abbreviation for Transport Independent Remote Procedure Call.

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Some devices, especially disk drives, con- tain a terminator to absorb and dissipate excess current. When more than one such device is connected in a series, you may need to remove the terminator—or change a jumper setting to disable it—un- less it is the last device in the series. However, some devices have terminators that should never be removed or disabled.

16 Dell PowerVault 720N, 740N, and 760N User’s Guide