Dell PowerVault MD3420 Handbuch für den Einsatz - Seite 9
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Item
Name
Number
1
12 gbps SAS Host Ports (2)
2
7–segment display
3
1G Ethernet Management (MGMT) Port (1)
4
Reserved Ethernet Port (1)
5
12 gbps SAS Host Ports (2)
6
SAS Expansion Ports (2)
NOTE: Only one SAS OUT expansion port can be used at a time and the recommended expansion
port is port 0.
NOTE: Do not cable the reserved management port.
Each PowerVault MD3400 and MD3420 storage array can be expanded to a maximum of 120 slots (or
192, if enabled using Premium Feature activation) through a maximum of seven MD1200 series expansion
enclosures.
Cabling The Storage Array
You can cable the storage array to host servers with:
•
Single path data configuration — A single path configuration allows you to connect a maximum of
eight hosts. This is a non-redundant configuration.
•
Dual path data configuration — A dual path configuration allows you to connect a maximum of four
hosts.
Choose the data configuration based on:
•
Number of hosts required
•
Level of data redundancy required
Redundant And Nonredundant Configurations
Nonredundant configurations are configurations that provide only a single data path from a host to the
storage array. This type of configuration is only recommended for noncritical data storage. Path failure
from a failed or removed cable, or a failed or removed RAID controller module results in loss of host
access to storage on the storage array.
Redundancy is established by installing separate data paths between the host and the storage array. Each
data path is connected to one of the two RAID controller modules installed in the storage array.
Redundancy protects the host from losing access to data in the event of path failure, because both RAID
controller modules can access all the disks in the storage array.
Description
Allows you to connect host servers to the
storage array.
Displays status of the controller.
Allows for out of band management of
storage array.
This is a reserved port.
Allows you to connect host servers to the
storage array.
Allows you to connect the storage array to
optional PowerVault MD1200 series
expansion enclosures for additional storage
capacity.
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