LSI 3ware 9750 User Manual page 307

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• Cache. See Read Cache and Write Cache.
• The size over which a unit will be divided into volumes, if
Carve size.
auto-carving is enabled.
• CLI . Command Line Interface. The 3ware CLI is a text program, rather
than a GUI (graphical user interface). It has the same functionality as
3DM2, and can be used to view, maintain, and manage 3ware controllers,
disks, and units.
• . The RAID level set for a unit.
Configuration
• Controller. The physical card from 3ware that you insert into a computer
system and connect to your disk drives or enclosure. The controller
contains firmware that provides RAID functionality. 3ware makes a
number of different models of SATA RAID controllers.
•
Controller ID number.
controller in a system, starting with zero.
• . The process of selecting individual disk drives and
Create an array
selecting a RAID level. The array will appear to the operating system as a
single unit. Overwrites any existing unit configuration data on the drives.
Note that in 3ware software tools, arrays are referred to as units.
• DCB. Disk configuration block. This is 3ware proprietary RAID table
information that is written to disk drives that are in a RAID unit or single
disk. The DCB includes information on the unit type, unit members,
RAID level, and other important RAID information.
• Delete an array. Deleting an array (or unit) is the process of returning the
drives in a unit to individual drives. This erases the DCB information
from the drives and deletes any data that was on them. When a unit is
deleted from a controller, it is sometimes referred to as being "destroyed."
If you want to remove a unit without deleting the data on it, do not delete
it; instead use the Remove feature in 3DM2, and then physically remove
the drives.
• Destroying . Same as deleting a unit.
• Degraded unit. A redundant unit that contains a drive that has failed.
When moving a unit from one controller to another, refers
• Disk roaming.
to putting disks back in a different order than they initially occupied,
without harm to the data.
• Distributed parity.
across several drives in RAID 5, RAID 6, and RAID 50 configurations.
Distributing parity data across drives provides both protection of data
good performance.
• . A unique identifier for a specific drive in a system. Also called a
Drive ID
port ID.
Unique number assigned to every 3ware
Parity (error correction code) data is distributed
and
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