peripheral devices
A piece of hardware (such as a video monitor, disk drive, printer, or
PHY | The interface required to transmit and receive data packets transferred |
| across the serial bus. |
| Each PHY can form one side of the physical link in a connection with a |
| PHY on a different SATA device. The physical link contains four wires that |
| form two differential signal pairs. One differential pair transmits signals, |
| while the other differential pair receives signals. Both differential pairs |
| operate simultaneously and allow concurrent data transmission in both |
| the receive and the transmit directions. |
RAID | Acronym for Redundant Array of Independent Disks (originally |
| Redundant Array of Inexpensive Disks). An array of multiple independent |
| physical disks managed together to yield higher reliability and/or |
| performance exceeding that of a single physical disk. The RAID array |
| appears to the controller as a single storage unit. I/O is expedited |
| because several disks can be accessed simultaneously. Redundant |
| RAID levels (RAID levels 1, 5, 10, and 50) provide data protection. |
RAID levels | A set of techniques applied to disk groups to deliver higher data |
| availability, and/or performance characteristics to host environments. |
| Each virtual disk must have a RAID level assigned to it. |
SAS | Acronym for Serial Attached SCSI. A serial, |
| |
| set. The SAS interface provides improved performance, simplified |
| cabling, smaller connections, lower pin count, and lower power |
| requirements when compared to parallel SCSI. The SAS controller |
| leverages a common electrical and physical connection interface that is |
| compatible with Serial ATA. The SAS controller supports the ANSI Serial |
| Attached SCSI standard, version 1.0. In addition, the controller supports |
| the Serial ATA II (SATA II) protocol defined by the Serial ATA |
| specification, version 1.0a. Supporting both the SAS and SATA II |
| interfaces, the SAS controller is a versatile controller that provides the |
| backbone of both server and |
| port on the RAID controller supports SAS and/or SATA II devices. |
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