Dell PowerEdge RAID Controller S300 - Manual (Page 22)

22 Features
Boot support for RAID
levels
Allows boot support for Volume, RAID 0, RAID 1, RAID 5,
and RAID 10.
Boot support for
degraded virtual disks
Enables the system to boot from degraded redundant virtual
disks (RAID 1, RAID 5, or RAID 10).
Cache support for
virtual disks
Supports these cache options: None, Read Only, Read/Write.
The PERC S100 adapter or PERC S300 adapter uses part of
system memory for cache.
Checkpointing Allows different types of checkpointing (background
initialization, consistency check, and rebuild) to resume at
the last point following a restart.
After the system restarts, background checkpointing resumes
at its most-recent checkpoint.
Command queuing Command queuing is a command protocol used by SATA
and SAS physical disks that is supported by the PERC S100
adapter and PERC S300 adapter.
Command queuing allows the host to issue multiple
input/output requests to a disk simultaneously. The disk can
then decide in which order to process the commands to
achieve maximum performance.
The SATA and SAS versions of command queuing have
slightly different protocols and means of handling multiple
traffic requests at the same time, but the end-purposes are
comparable.
Table 3-1. Features of the PERC S100 controller and PERC S300 controller (continued)
RAID Controller Feature Description
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