ATTO Technology 1550D Enhance performance, ISCSI performance configuration tool Windows only

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Enhance performance

Note

If you used ExpressWizard to set up your iPBridge, changing these parameters may interfere with ExpressWizard settings.

Default values, even if you have not used the ExpressWizard, are appropriate for most configurations, but may be modified.

1Follow the Preliminary steps.

2On the iSCSI page, enable SpeedWrite.

3On the Ethernet page, change MTU to 9014.

Note

If you change the MTU on the iPBridge, you must enable jumbo frames on your initiator and change the MTU on the initiator.

4For Windows operating systems, use the ATTO iSCSI performance configuration tool (Windows only).

iSCSI performance configuration tool (Windows only)

The ATTO iSCSI performance configuration tool changes the Windows registry parameters for Microsoft iSCSI Initiator and TCP/IP to enhance overall data throughput.

1From the CD which came with your iPBridge, copy the Perftune.exe file to your hard drive.

2Execute the program.

3Click on Use ATTO Performance Settings. Settings take effect on the next system reboot.

The following settings are affected:

FirstBurstLength

The maximum amount, in bytes, of unsolicited data an iSCSI initiator may send to the target during the execution of a single SCSI command including the immediate data and the sequence of unsolicited Data-Out PDUs which follow the command. FirstBurstLength cannot exceed MaxBurstLength

ATTO value: 1048576 decimal 00100000 hex

MaxBurstLength

The maximum SCSI data payload, in bytes, in a Data-In or a solicited Data-Out iSCSI sequence. A sequence consists of one or more consecutive Data-In or Data-Out PDUs that end with a Data-In or Data-Out PDU with the F bit set to one.

ATTO value: 1048576 decimal 00100000 hex

MaxRecvDataSegmentLength

The maximum data segment length, in bytes, that a transmitter (initiator or target) can receive in an iSCSI PDU. The transmitter is required to send PDUs with a data segment that does not exceed

MaxRecvDataSegmentLength of the receiver.

ATTO value: 1048576 decimal 00100000 hex

MaxTransferLength

The maximum number of bytes that may be transferred by a single SCSI request block (SRB).

ATTO value 1048576 decimal 00100000 hex

SrbTimeoutDelta

The maximum amount of time, in seconds, before an SRB request will time out.

ATTO value 300 decimal 0000012c hex

Tcp1323Opts

This parameter controls RFC 1323 time stamps and window-scaling options. Time stamps and window scaling are enabled by default, but can be manipulated with flag bits. Bit 0 controls window scaling and bit 1 controls time stamps.

ATTO value: 1

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Contents IPBridge 1550D Atto Technology, Inc Contents Appendix a Cabling Appendix C Safety standards and compliances XivUpdating firmware Interface optionsPage Atto iPBridge provides storage options FeaturesExhibit 1.0-1 Possible storage solutions using the iPBridge Physical components Exhibit 1.1-1 iPBridge 1550D back panel Installing Windows drivers InstallationUnpacking the packing box verifying contents Installing the iPBridgeUncheck the Require server verification check box Installing MS iSCSI Initiator for WindowsBeginning initial configuration Select Internet OptionsPreliminary steps Configure the iPBridgeExpressWizard Page Target names Default target nodeAutomatically configure a single target Target managementClick on the Map each device to its own target button Automatically configure multiple targetsManually configure multiple target nodes Multiple target nodesExhibit 3.1-1 Target node configurations ISCSI ISCSI configurationChap commands EthernetPreliminary steps Modify passwordsSet up a Vlan Virtual Local Area Network Optional changesEnhance performance ISCSI performance configuration tool Windows onlySnmp Remote system monitoringUsing FTP Using Atto ExpressNAVUpdating firmware Check the host event log TroubleshootingCheck basic diagnostic tools Inside out methodCheck the serial port Check componentsCheck Scsi devices Check the iPBridge Scsi portCheck the LAN/WAN Check the iPBridge Ethernet portCheck the applications Performance issuesCheck the iSCSI OS driver Check the Operating SystemCheck the host system Optimize Atto ExpressNAV in Internet Explorer Reset to factory defaultsOpening an ExpressNAV session Using ExpressNAVUsing the serial port Interface optionsEnter Using TelnetExamples Appendix a CablingScsi cabling Cable typesEthernet connections Connecting Scsi devices to the Scsi portAppendix B CLI provides an ASCII-based interface Symbol IndicatesCLI summary CLI error messagesRmon Command Default ExampleAlphabetical CLI command explanations DeleteAllMaps DumpConfigurationDate FirmwareRestartISCSIChap IPGatewayIPSubnetMask ISCSIAliasRestoreConfiguration ISNSLoginControlPassword ReadOnlyPasswordRoute SaveConfigurationSCSIPortReset SCSIPortResetOnStartupSNMPDumpMIB SerialPortBaudRateSerialPortEcho SCSITargetLUNsVerboseMode SpeedWriteDefaultSNTPServer UsernameXiii FCC Standards Radio and Television Interference Appendix C Safety standards and compliancesPage Xvi

1550D specifications

ATTO Technology 1550D is an advanced Thunderbolt 3 to 10Gb Ethernet adapter designed to enhance networking capabilities for professionals, content creators, and businesses. Known for its compact design and robust performance, the 1550D is engineered to provide a seamless and efficient connection to high-speed networks, making it an ideal solution for a variety of demanding applications.

One of the standout features of the ATTO 1550D is its ability to support high-bandwidth data transfers. With Thunderbolt 3 technology, users can achieve speeds up to 40Gbps, allowing for quick and efficient file transfers. This is particularly beneficial for users dealing with large files, such as video editing and data-intensive graphic design, where every second counts.

The ATTO 1550D also supports 10Gb Ethernet connections, which enables users to connect to existing network infrastructures with ease. This dual compatibility ensures that professionals can maintain productivity and workflow without the need for extensive infrastructure upgrades. The adapter's support for both static and dynamic IP addressing adds an extra layer of versatility, catering to diverse networking environments.

In terms of characteristics, the ATTO 1550D features a compact and durable design, making it portable and easy to integrate into any workspace. The sleek form factor allows for straightforward connectivity, fitting effortlessly into modern setup configurations. Moreover, its plug-and-play functionality means that users can quickly establish connections without the need for extensive setup processes or additional drivers.

The adapter also boasts advanced features such as link aggregation, which allows for increased throughput and redundancy, enhancing overall network performance. This is crucial for organizations that require reliable network connections to maintain operational efficiency. The ATTO 1550D is built with high-quality components that ensure durability and longevity, ideal for both field and studio environments.

Overall, the ATTO Technology 1550D positions itself as a premier solution in the realm of Thunderbolt 3 to Ethernet adapters, combining speed, reliability, and flexibility. Whether used for high-speed data transfers or stable network connectivity, it meets the demands of today's high-performance computing environments, making it an essential tool for tech-savvy professionals and businesses alike.
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