Use the following procedure when creating FlashCopy logical drives on a host running one of the following Unix-based operating systems:
Failure to complete the steps listed may result in an inaccurate point-in-time image of the base logical drive.
For a process overview of the FlashCopy logical drive creation process, refer to Create FlashCopy Logical Drive Wizard: Process Overview - Unix.
FlashCopy logical drives may be reused (for frequent or nightly backups), or may be created for one-time usage (speculative change or upgrade testing). For instructions on how to reuse a disabled FlashCopy logical drive, see Reusing FlashCopy Logical Drives.
Before creating a FlashCopy logical drive, the following should be considered:
To create a FlashCopy logical drive, complete the following steps.
1 |
Start the storage management software. Result: The Enterprise Management Window is displayed. |
2 |
Launch an Subsystem Management Window using one of the following methods:
Result: The Subsystem Management Window is opened in a separate window. |
3 |
Within the Logical View of the Subsystem Management Window, select a standard logical drive and create a FlashCopy logical drive using one of the following methods:
|
4 |
Assign a logical drive-to-LUN mapping Logical Drive-to-LUN mappings can be defined using one of the following methods:
|
5 |
If supported by the operating system, run the hot_add Once logical drives have been created and logical drive-to-LUN mappings have been defined, the hot_add utility is run to ensure that the operating system is aware of the newly created logical drives, without having to reboot the host. For information on which operating systems support the hot_add utility, refer to the Storage Manager Software Installation Guide. Solaris Operating System-Specific Instructions: At the host prompt, type the following, then press Enter: /etc/raid/bin/hot_add IRIX Operating System-Specific Instructions: Perform a path scan. At the host prompt, type the following: scsiha -rp <X> <X> ;ioconfig -f /hw; hinv where <X> is the scsi controller number, then press Enter. Once logical drives have been created and logical drive-to-LUN mappings have been defined, this step ensures that the operating system is aware of the newly created logical drives, without having to reboot the host. |
6 |
Run the SMdevices Once logical drives have been created and logical drive-to-LUN mappings have been defined, the SMdevices utility is run to ensure that the logical drive name and the operating system device name (assigned by the operating system) correlate. |
7 |
If the FlashCopy logical drive is being created for immediate use, go to step 8. If the FlashCopy logical drive is being created for use at a later date, disable the FlashCopy logical drive now. Disable the FlashCopy logical drive using one of the following methods:
|
|
Important: If I/O activity to the base logical drive was stopped or data transfer was suspended, resume I/O activity to the base logical drive at this time (or re-enable data transfer). |
8 |
Mount the FlashCopy logical drive to its intended host. |
9 |
Use the FlashCopy logical drive in conjunction with your backup application, for speculative testing, or with another application. |
10 |
Unmount the FlashCopy logical drive. |
11 |
Once the FlashCopy logical drive is no longer required, disable or delete the FlashCopy logical drive. If you disable the FlashCopy logical drive instead of deleting it, you can retain the FlashCopy logical drive and its associated FlashCopy repository logical drive. Then, when you need to create a different FlashCopy of the same base logical drive, you can re-create the disabled FlashCopy logical drive. This takes less time than creating a new FlashCopy logical drive and will stop any reduction in performance that may occur if the FlashCopy logical drive remains available. For information on disabling or recreating a FlashCopy, see Disabling a FlashCopy Logical Drive and Re-creating a FlashCopy Logical Drive. For information on deleting a FlashCopy logical drive, see Deleting a Logical Drive. For command reference information on disabling, recreating, and deleting a FlashCopy logical drive, refer to the Enterprise Management Window online help. |
Typically, once a FlashCopy logical drive has been created, it is disabled until a new point-in-time image of the same base logical drive is required. To create a new point-in-time image of the same base logical drive, complete the following steps.
|
Important: All I/O activity to the base logical drive should be stopped at this point (or data transfer suspended). This will ensure that an accurate point-in-time image of the base logical drive is captured. |
1 |
Unmount the base logical drive. |
2 |
In the storage management software, re-create the FlashCopy logical drive using one of the following methods:
|
3 |
Remount the base logical drive (to its original host). |
4 |
Mount the FlashCopy logical drive to its intended host. |
|
Important: If I/O activity to the base logical drive was stopped or data transfer was suspended, resume I/O activity to the base logical drive at this time (or re-enable data transfer). |
5 |
Use the FlashCopy logical drive in conjunction with your backup application (or with another application). |
6 |
Unmount the FlashCopy logical drive. |
7 |
Once use of the FlashCopy logical drive is no longer required, disable the FlashCopy logical drive. If you disable the FlashCopy logical drive instead of deleting it, you can retain the FlashCopy logical drive and its associated FlashCopy repository logical drive. Then, when you need to create a different FlashCopy of the same base logical drive, you can re-create the disabled FlashCopy logical drive. This takes less time than creating a new FlashCopy logical drive and will stop any reduction in performance that may occur if the FlashCopy logical drive remains available. For more information, see Disabling a FlashCopy Logical Drive and Re-creating a FlashCopy Logical Drive. For command reference information on disabling and re-creating a FlashCopy logical drive, refer to the Enterprise Management Window online help. |
Create FlashCopy Logical Drive Wizard: Additional Instructions
Learn About Creating FlashCopy Logical Drives
Creating a FlashCopy Logical Drive Using the FlashCopy Wizard