HP-UX Reference (11i v1 05/09) - 1M System Administration Commands A-M (vol 3)

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amcfg(1M) amcfg(1M)

and the mirror disks are on channel 2. However, specifying disks in the order

1:2,

2:2, 1:3, and 2:3 would result in mirrored pairs of

1:2/1:3 and 2:2/2:3. This

would put the data disk and mirror disk of each pair in the same enclosure, making

the LUN vulnerable to an enclosure failure.

-D LUN Delete the LUN identiﬁed by LUN.

-force Allows a LUN to be created using two or more disks in the same enclosure. This

option allows you to override the high-availability protection designed into the LUN

binding process. Using this option you can specify more than one disk per enclosure.

You can also use this option to create a RAID 5 LUN that includes more than six

disks.

-L cntrlrID:LUN

Create a LUN with the number speciﬁed by LUN. The LUN will be owned by the con-

troller identiﬁed by cntrlrID.

-M LUN -c cntrlrID

Change the ownership of the LUN speciﬁed by LUN to the controller speciﬁed by

cntrlrID.

-r RAIDlevel Identiﬁes the RAID level used for the LUN. RAID levels that can be speciﬁed are 0,

1, and 5. A RAID 0/1 LUN is created by selecting RAID 1 with more than two disks.

RAID 0 is available only on ﬁrmware HP07 and later.

CAUTION: RAID 0 does not provide data redundancy. It should only be used in

situations where high performance is more important than data protection. The

failure of any disk within a RAID 0 LUN will cause the loss of all data on the LUN.

RAID 0 should only be used for non-critical data that could be lost in the event of a

hardware failure.

-R cntrlrID:LUN

Replace (unbind and rebind) the LUN with the number speciﬁed by LUN on the con-

troller identiﬁed by cntrlrID.

-s SegmentSize

Identiﬁes the stripe segment size used for the LUN. The stripe segment size is

speciﬁed in Kbytes and must be a multiple of the current cache page size setting. For

example, if the cache page size is set to 4 Kbytes, valid settings would be 4, 8, 16, 64,

etc.

-V Verbose mode displays additional command execution, state, and/or status messages.

-? Display expanded usage message. This option overrides all others.

SECURITY CONFIGURATION

This command is modiﬁed for all security conﬁgurations.

Security Behavior/Restrictions

Use of this command is restricted to authorized users only.

Command Authorizations

This command requires the sysadmin authorization to successfully execute.

Privileges

The command has been modiﬁed to support least privilege. The potential privileges possessed by the com-

mand and their uses include:

allowdacread This privilege is raised to provide discretionary read access to the devices.

allowdacwrite This privilege is raised to provide discretionary write access to the devices.

allowmacread This privilege is raised to provide mandatory read access to the devices.

allowmacwrite This privilege is raised to provide mandatory write access to the devices.

filesysops This privilege is raised to allow the mknod(2) system call to succeed.

writeaudit The command generates its own audit records and submits these directly to the sys-

tem audit trail. This privilege is raised whenever the command needs to write an

Section 1M−−18 Hewlett-Packard Company − 2 − HP-UX 11i Version 1: September 2005