iSCSI Security
For an iSCSI interface, the iSCSI authentication function can be used when the initiator accesses the target. The
iSCSI authentication function is available for host connections and remote copying.
The Challenge Handshake Authentication Protocol (CHAP) is supported for iSCSI authentication. For CHAP Au-
thentication, unidirectional CHAP or bidirectional CHAP can be selected. When unidirectional CHAP is used, the
target authenticates the initiator to prevent fraudulent access. When bidirectional CHAP is used, the target au-
thenticates the initiator to prevent fraudulent access and the initiator authenticates the target to prevent imper-
sonation.
Stable Operation
This section explains the function that sets the operation mode according to the connection environment of the
ETERNUS DX in order to enable stable operation.
Quality of Service (QoS)
The I/O performance of a server with higher priority is guaranteed by configuring the performance limit of each
connected server.
When loads from one application are high in a storage integrated environment and sufficient resources to proc-
ess other operations cannot be secured, performance may be reduced.
If the QoS function is used, the processing performance of the server given priority for a process can be main-
tained. The workload limit can be configured on each server, and even if workload has been changed by a server
processing request, the prioritized operation will not be affected.
The storage resource can be automatically adjusted using ETERNUS SF Storage Cruiser to link the QoS automa-
tion with Automated Storage Tiering.
In addition, an upper bandwidth limit can be set for each copy path. Even if a specific path fails, a steady load
can be maintained without centralizing the load to other paths.
4. SAN Functions
Stable Operation
53
FUJITSU Storage ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems
Overview
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