Dell PowerVault MD3820f - Manual (Page 48)

Access Virtual Disk
Each RAID controller module in an MD Series storage array maintains a special virtual disk, called the
access virtual disk. The host-agent software uses the access virtual disk to communicate management
requests and event information between the storage management station and the RAID controller
module in an in-band-managed storage array and cannot be removed without deleting the entire virtual
disk, virtual disk group or virtual disk pair. The access virtual disk is not available for application data
storage and cannot be removed without deleting the entire virtual disk, virtual disk group, or virtual disk
pair. The default LUN is 31.
Storage Arrays
You must add the storage arrays to the MD Storage Manager before you can set up the storage array for
optimal use.
NOTE: You can add storage arrays only in the EMW.
You can:
• Automatically discover storage arrays.
• Manually add storage arrays.
NOTE: Verify that your host or management station network configuration— including station IP
address, subnet mask, and default gateway—is correct before adding a new storage array using the
Automatic option.
NOTE: For Linux, set the default gateway so that broadcast packets are sent to 255.255.255.0. For
Red Hat Enterprise Linux, if no gateway exists on the network, set the default gateway to the IP
address of the NIC.
NOTE: The MD Storage Manager uses TCP/UDP port 2463 for communication to the MD storage
array.
Automatic Discovery Of Storage Arrays
The Automatic Discovery process sends out a broadcast message across the local subnet and adds any
storage array that responds to the message. The Automatic Discovery process finds both in-band and
out-of-band storage arrays.
NOTE: The Automatic Discovery option and the Rescan Hosts option in the EMW provide
automatic methods for discovering managed storage arrays.
Manual Addition Of A Storage Array
Use Manual addition if the storage array resides outside of the local subnet. This process requires specific
identification information to manually add a storage array.
To add a storage array that uses out-of-band management, specify the host name or management port
IP address of each controller in the storage array.
To add an in-band storage array, add the host through which the storage array is attached to the
network.
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