HP-UX Reference (11i v1 05/09) - 1M System Administration Commands N-Z (vol 4)

n
newarray(1M) newarray(1M)
which LUN’s are configured determines the physical mapping on the disks within the
array, be very careful when using the -L
option.
-N config_name
The name of the configuration to be used, as specified in the configuration file
/etc/hpC2400/arraytab
. See arraytab(4).
-V Display the parameters of array configuration, and the utility commands issued as part of
the configuration process.
-b block_size The size in bytes of the LUN block. Must be an integral number of the physical disk
mechanism sector size. Currently supported values are 512, 1024, 2048, and 4096.
-c capacity The size in blocks of the LUN. A value of 0 defaults to the largest capacity available. If the
LUN type is set to sub-LUN, the capacity is the available capacity of the composite drive
group or 2 GByte if the 2 GByte flag is set, which ever is smaller. See
-f option.
-d group_size Physical drive group will contain this number of disks in the logical partition configuration.
-f flags Configuration flags. There are 16 flags, represented by a 16 bit hexadecimal number.
Currently only four of the flags are defined. The flag definitions and their default value are:
Bit 0 off Not used.
Bit 1 on Disable auto reconstruction. When set (on), disables the automatic detec-
tion, and initiation of failed disk data reconstruction.
Bit 2 off Not used.
Bit 3 off Not used.
Bit 4 on When set (on), enables AEN (automatic event notification) polling.
Bit 5 on When set (on), enables read parity verification.
Bit 6 on When set (on), enables write with parity verification.
Bit 7 off Not used.
Bit 8 off Mode Sense default pages. Bit 8 and Bit 9 concurrently set is reserved.
Bit 9 off Mode Sense current pages. Bit 8 and Bit 9 concurrently set is reserved.
Bit 10-15 off Not used.
-g group_name
Use physical drive group configuration with label GroupName (in array configuration table)
for this LUN configuration.
-i seg0_size The size in bytes of the first segment LUN. This allows this area to be set to a size
different than the remainder of the disk, an area typically used as the boot block for some
systems. This must be a integral number of the block-size. If there are no special require-
ments, this parameter should be set to 0.
-k recon_size Reconstruction size. The
-k option specifies (in LUN blocks) the amount of data to be
reconstructed in a single operation during reconstruction of a redundant drive
configuration. Larger values provide more efficient (faster) reconstruction, but hold off the
servicing of I/O requests. Smaller values allow quicker servicing of I/O requests, but with
less efficient (slower) reconstruction.
-l recon_freq Reconstruction frequency. The -l option specifies (in tenths of a second) the time period
between reconstruction of disk segments in a redundant drive configuration. Small time
periods cause the array to consume most of its time reconstructing data, but allow the
reconstruction to complete more quickly. Large time periods allocate more time to I/O pro-
cessing, but require longer reconstruction times.
-r raid_level The RAID (redundancy level) to apply to the disks in the array. Valid entries for raid_level
are RAID _0, RAID _1, RAID_3, and RAID_5. Some RAID levels require specific physical
drive configurations. See also the -g option.
-s seg_size The number of bytes of a contiguous segment of the logical address space residing on a sin-
gle physical disk. This affects how many physical disks are involved in a single I/O request.
If I/O requests are mostly random, single-block requests, set this value to the integral
number of the LUN block size that minimizes the number of disks necessary to service
HP-UX 11i Version 1: September 2005 − 2 − Hewlett-Packard Company Section 1M−−583