Table 48 Ethernet Frame Capacity (Jumbo Frame Settings) - Fujitsu ETERNUS DX500 S4/DX600 S4 Design Manual

4. Connection Configuration
SAN Connection
In order to maintain iSCSI performance, the iSCSI network should be physically separated from other types of
networks (such as networks for Internet access and file transfers).
Operation Mode
•
The iSCSI 10Gbit/s operation mode is 10GBASE-SR or 10GBASE-CR.
10GBASE-CR is a form of communication that uses Twinax cables and is 10GBASE-SR-compliant.
The iSCSI 1Gbit/s operation mode is 1000BASE-T Full Duplex (FULL).
CHAP
•
CHAP authentication can prevent unauthorized access. The following CHAP authentication methods are sup-
ported:
Unidirectional CHAP
-
Bidirectional CHAP
-
Tag VLAN
•
The tag VLAN function is supported. 16 tags (VLAN ID) can be used for each port.
Jumbo Frame
•
Enabling Jumbo Frame makes data transfer more efficient by increasing the amount of data that can be trans-
ferred for each Frame.

Table 48 Ethernet Frame Capacity (Jumbo Frame Settings)

Jumbo Frame settings
Enabled
Disabled
Server-side CPU load can be reduced by using Jumbo Frame. However, I/O performance may be reduced by
10% to 30%.
Security Architecture for Internet Protocol (IPsec)
•
The IPsec function is not supported. Connect the server using a LAN switch that has the IPsec function as re-
quired.
Internet Protocol
•
IPv4 and IPv6 are supported.
Data Center Bridging (DCB)
•
iSCSI 10Gbit/s interfaces support the Data Center Bridging (DCB) function.
DCB is an enhanced function of traditional Ethernet and a standard for Fabric connections in data centers. The
DCB function allows connections to Converged Enhanced Ethernet (CEE) environments.
■
FCoE
This host interface is supported only for the ETERNUS DX500 S3/DX600 S3.
Fabric is supported as a connection topology. The transfer rate is 10Gbit/s. When using an FCoE interface, con-
nect the ETERNUS DX to the FCoE switch. Direct connections to servers are not supported.
FUJITSU Storage ETERNUS DX500 S4/DX600 S4, ETERNUS DX500 S3/DX600 S3 Hybrid Storage Systems Design Guide (Basic)
Ethernet frame capacity
Up to 9000 bytes
Up to 1500 bytes
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