01-17-2014
First off, welcome to the AIX board.
Having said this, it might help to describe your hardware a bit more in detail. The more detail you give the better the offered solutions will be.
In general (but this will depend on your hardware, so take this cum grano salis) it will not be necessary to power off or even unmount filesystems involved. AIX' LVM and IBMs RAID driver can handle practically all the necessary tasks while the storage is in use. I wouldn't start the biggest database import available while recovering from disk failures but that's about it.
I have not used RAID arrays for probably 10 years now, so i can only draw on some remote memory, but IBMs arrays always included hot-standby-disks. A failed disk is immediately swapped with the standby and you take the former out and bring in a new standby disk in when recovering the array.
I hope this helps.
bakunin
This User Gave Thanks to bakunin For This Post:
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dpt(7D) Devices dpt(7D)
NAME
dpt - DPT ServeRAID IV SCSI host bus adapter and RAID adapter driver
DESCRIPTION
The dpt driver is a driver for the DPT (Distributed Processing Technology) family of SmartRAID IV SCSI HBA and RAID adapters. The following
HBA adapters are supported: PM2024, PM2044UW, PM2044W, PM2124, PM2124W, PM2144UW, and PM2144W.
The following RAID adapters are supported: PM3224, PM3224W, PM3334UW, and PM3334W.
PRECONFIGURATION
o DPT PM3224 only: Only EPROM 7A and later versions are supported.
o DPT PM2024 and PM2124 only: Only EPROM 6D4 and later versions are supported.
o Use adapters with SmartROM version 3.B or later versions only.
o Be sure that the controller board is installed in a PCI bus-mastering slot.
o Disable PCI parity checking if your firmware version is earlier than version 7A, if your system memory is ECC, or if your system does
not check parity.
Known Problems and Limitations
During system boot, a message may be displayed saying a DPT controller driver cannot be installed. This message indicates that the mother-
board installed in your system may contain ECC memory or may not check parity. If you see this message is displayed, disable PCI parity
checking.
Supported Settings
o I/O Address: Auto
CONFIGURATION
Auto-configuration code determines whether the adapter is present at the configured address and what types of devices are attached to it.
The DPT ServeRAID is primarily used as a disk array (system drive) controller.
To configure the attached disk arrays, you must configure the controller (using the configuration utilities provided by the hardware manu-
facturer) before you boot the Solaris operating environment. You use the configuration utilities to set RAID levels, stripe parameters,
cache mechanisms and perform other functions. For more information, see the user manual supplied with your hardware.
FILES
/kernel/drv/dpt.conf dpt configuration file
/dev/dsk/cndn[s|p]n block device
/dev/rdsk/cndn[s|p]n raw device where:
cn controller n
dn LUN n (0-7)
sn UNIX system slice n (0-15)
pn fdisk(1M) partition(0)
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
+-----------------------------+-----------------------------+
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|Architecture |x86 |
+-----------------------------+-----------------------------+
SEE ALSO
fdisk(1M), attributes(5), cmdk(7D)
SunOS 5.10 27 November 2000 dpt(7D)