CLI Guide

Mandatory
Options and
Arguments
Optional
Parameters
Valid Parameters
Arguments
Description
NOTE: From DTK 2.4 onwards, the
-fd option creates dedicated hot
spares instead of global hot spares.
For information about setting global
hot spares, see Assigning,
Unassigning, And Listing Global Hot
Spares.
For SCSI controllers, the value of LUN
should always be 0.
For SAS controllers, the value of
enclosure can be non-zero, in which
case you must specify values for
channel, target, and enclosure.
-r or -raid
0, 1, 5, 6, 10, 50,
60
Sets the RAID type or level for the virtual
disk.
NOTE: If this option is not specified
for any RAID controller, RAID 0 is
taken as the default.
The valid arguments are:
• 0 — RAID 0 uses data striping, which
is writing data in equal-sized
segments across the array disks.
RAID 0 does not provide data
redundancy.
• 1 — RAID 1 is the simplest form of
maintaining redundant data. In RAID
1, data is mirrored or duplicated on
one or more drives.
• 5 — RAID 5 provides data
redundancy by using data striping in
combination with parity information.
Rather than dedicating a drive to
parity, the parity information is
striped across all disks in the array.
• 6 — RAID 6 is an extension of RAID 5
and uses extra parity block. It uses
block-level striping with two parity
blocks distributed across all member
disks. RAID 6 provides protection
against double disk failures and
failures while a single disk is
rebuilding. If there is only one array,
RAID 6 may be a better option than a
hot spare disk.
• 10 — RAID 10 is a stripe of mirrors.
Multiple RAID 1 mirrors are created,
and a RAID 0 stripe is created over
RAID 1 mirrors.
• 50 — RAID 50 is a dual-level array
that uses multiple RAID 5 sets in a
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