Intel RMSP3AD16OF Hardware User's Manual page 55

Intel® RAID Modules RMSP3AD160F, RMSP3CD080F and RMSP3HD080E Hardware User Guide
Term
SSP
STP
stripe
stripe size
striping
strip size
UPS
49
Acronym for Serial SCSI Protocol. SSP enables communication with other SAS devices. Each
PHY on the SAS controller can function as an SSP initiator.
Acronym for Serial Tunneling Protocol. STP enables communication with a SATA device through
an attached expander. Each PHY on the SAS controller can function as an STP initiator.
The portion of a stripe that resides on a single drive.
The total drive space consumed by a stripe not including a parity drive. For example, if a stripe
contains 64 KB of drive space and has 16 KB of data residing on each drive, the stripe size is 64
KB and the strip size is 16 KB.
A larger stripe size produces improved read performance, especially if most of the reads are
sequential. For mostly random reads, select a smaller stripe size.
Drive striping writes data across two or more drives. Each stripe spans two or more drives but
consumes only a portion of each drive. Each drive, therefore, may have several stripes. The
amount of space consumed by a stripe is the same on each drive that is included in the stripe.
The portion of a stripe that resides on a single drive is a strip, also known as a stripe element.
Striping by itself does not provide data redundancy; striping in combination with parity provides
data redundancy.
The drive space consumed by a strip. For example, if a stripe contains 64 KB of drive space and
has 16 KB of data residing on each drive, the stripe size is 64 KB and the strip size is 16 KB. The
stripe depth is four (four drives in the stripe). You can specify strip sizes of 8 KB, 16 KB, 32 KB, 64
KB, 128 KB, 256 KB, 512 KB, or 1 MB.
Uninterruptible Power Supply. An electrical device that provides power off of a battery when
the input power source (AC) fails.
Description