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Third-Party Disk Controllers

1. Emulex Scsi & Raid Devices Driver Download For Windows 10 Free
2. Emulex Scsi & Raid Devices Driver Download For Windows 10 64
3. Emulex SCSI & RAID Devices Driver Download For Windows 10
4. Emulex Scsi & Raid Devices Driver Download For Windows 10 64-bit
5. Emulex Scsi & Raid Devices Driver Download For Windows 10 Windows 10

SCSI drives will primarily be available in a range that goes from about 36GB to 146GB. For reference, a good fifth generation iPod can round in at 80GB, which is a tremendous storage capacity for storing songs, but maybe not so great for something like the entire contents of your desktop computer (or customer history of a long-term website). Emulex provides connectivity, monitoring and management solutions for high-performance networks, delivering provisioning, end-to-end application visibility, optimization and acceleration for the.

Overview

Mass storage technology has evolved over the years, with each new mechanical storage product quickly becoming obsolete after just a few years of being on the market. For the hobbyist, like myself, this makes resurrecting old computers more difficult. I have little interest in owning a pair of RL02 disk systems, or an RA80 drive. These are large, noisy units and are all beyond their useful life. About the only storage standard that has some usefulness left is SCSI.

A number of manufacturers made fast, narrow, high-voltage SCSI controllers for the Q-bus line of machines. These controllers can still be adapted to support modern storage technologies, through the use of bridge controllers. The table below contains a comparison of some of these controllers. Many of these controllers are difficult to find, as is their documentation, in some cases.

Emulex

¹ The SCSI bus cannot simultaneously support disk and tape devices.
² The SCSI buses themselves cannot simultaneously support disk and tape devices, but one bus can be configured for disk devices and the other for tape devices.

California Micro Devices (CMD)

¹ Only the /M and /TM models.
² Only the /T and /TM models.
³ Partitions are equal size.
⁴ Differential mode. 1.5 A in sigle-ended mode.

Summary

The Emulex UC04 is an early version of the UC07 and is generally considered to be buggy. The UC06, UC07 and UC08 controllers are solid, about 95% comaptible with existing software, and somewhat versatile. Based on personal experience, these controllers only have 24-bits of LBA addressing, which limits them to 8GB per disk.

The CMD controllers are very popular, and extremely simple to setup and use. These controllers have more compatability issues than the Emulex controllers, but work extremely well, otherwise.

References

• Emulex UC04 Intelligent Host Adapter Technical Manual, February 1986 (UC0351002, Rev A)
• Emulex UC06, UC07 and UC08 Intelligent Host Adapter Technical Manual, November 1990 (UC0751001-00, Rev H)
• CMD CQD-200/203 Qbus Controller Installation Guide, April 1996
• CMD CQD-220/223 High Performance Q-Bus Sync/Async SCSI Host Adapter User's Manual, Rev 2.5, November 1990
• CMD CQD-220A/223A High Performance Q-Bus SCSI-2 Smart Host Adapter User's Manual, Rev 1.1, December 1993 (MAN-00220A-000)
• CMD CQD-420/423 High Performance Q-bus FAST SCSI-2 Smart Host Adapter User's Manual, Rev 1.5, May 1994 (MAN-000420-000)

Additional Resources

• MicroNote 12 - DMA on the Q-bus

Copyright © 2020 by The Frain Research Group.

The Linux SCSI Target Wiki

See LIO for a complete overview over all fabric modules.

Fibre Channel (FC) provides drivers for various FC Host Bus Adapters (HBAs). Fibre Channel is a gigabit-speed network technology primarily used for storage networking.

Emulex Scsi & Raid Devices Driver Download For Windows 10 Free

Overview

Fibre Channel is standardized in the T11 Technical Committee of the Inter National Committee for Information Technology Standards (INCITS), an American National Standards Institute (ANSI) - accredited standards committee.

Fibre Channel has been the standard connection type for storage area networks (SAN) in enterprise storage. Despite its name, Fibre Channel signaling can run on both twisted pair copper wire and fiber-optic cables.

The Fibre Channel Protocol (FCP) is a transport protocol which predominantly transports SCSI commands over Fibre Channel networks.

Hardware support

The following QLogic Fiber Channel HBAs are supported in 4/8-gigabit mode:

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• QLogic 2400 Series (QLx246x), 4GFC
• QLogic 2500 Series (QLE256x), 8GFC (fully qual'd)

The QLogic Fibre Channel fabric module (qla2xxx.ko, Linux kernel driver database) for the Linux SCSITarget was released with Linux kernel 3.5 on July 21, 2012.^[1]

With Linux 3.9, the following 16-gigabit QLogic Fibre Channel HBA is supported, which makes LIO the first open source target to support 16GFC:

• QLogic 2600 Series (QLE266x), 16GFC, SR-IOV

With Linux 3.9, the following QLogic CNAs are also supported:

Emulex SCSI & RAID Devices Driver Download For Windows 10

• QLogic 8300 Series (QLE834x), 16GFS/10 GbE, PCIe Gen3 SR-IOV
• QLogic 8100 Series (QLE81xx), 8GFC/10 GbE, PCIe Gen2

Enable target mode

By default, the upstream qla2xxx driver runs in initiator mode. To use it with LIO, first enable Fibre Channel target mode with the corresponding qlini_mode module parameter.^[2]

To enable target mode, add the following parameter to the qla2xxx module configuration file:

Depending on your distribution, the module configuration file might be different, for instance:

• /etc/modprobe.d/qla2xxx.conf: CentOS, Debian, Fedora, RHEL, Scientific Linux
• /etc/modprobe.conf.local: openSUSE, SLES

In order for these changes to take effect, the initrd/initramfs will need to be rebuilt.

Please verify that initrd/initramfs is accepting the additional qla2xxx parameter.

targetcli

targetcli from Datera, Inc. is used to configure Fibre Channel targets. targetcli aggregates LIO service modules via a core library, and exports them through an API, to provide a unified single-node SAN configuration shell, independently of the underlying fabric(s).

Cheat sheet

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Startup

targetcli is invoked by running targetcli as root from the command prompt of the underlying LIO shell.

Upon targetcli initialization, the underlying RTSlib loads the installed fabric modules, and creates the corresponding ConfigFS mount points (at /sys/kernel/config/target/<fabric>), as specified by the associated spec files (located in /var/target/fabric/fabric.spec).

Display the object tree

Use ls to list the object hierarchy, which is initially empty:

Per default, auto_cd_after_create is set to true, which automatically enters an object context (or working directory) after its creation. The examples here are modeled after this behavior.

Optionally, set auto_cd_after_create=false to prevent targetcli from automatically entering new object contexts after their creation:

Create a backstore

Create a backstore using the IBLOCK or FILEIO type devices.

For instance, enter the top-level backstore context and create an IBLOCK backstore from a /dev/sdb block device:

targetcli automatically creates a WWN serial ID for the backstore device and then changes the working context to it.

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The resulting object hierarchy looks as follows (displayed from the root object):

Alternatively, any LVM logical volume can be used as a backstore, please refer to the LIO Admin Manual on how to create them properly.

For instance, create an IBLOCK backstore on a logical volume (under /dev/<volume_group_name>/<logical_volume_name>):

Again, targetcli automatically creates a WWN serial ID for the backstore devices and then changes the working context to it.

Instantiate a target

The Fibre Channel ports that are available on the storage array are presented in the WWN context with the following WWNPs, for instance:

• 21:00:00:24:ff:31:4c:48
• 21:00:00:24:ff:31:4c:49

Instantiate a Fibre Channel target, in this example for QLogic HBAs, on the existing IBLOCK backstore device my_disk (as set up in targetcli):

targetcli automatically changes the working context to the resulting tagged Endpoint.

Export LUNs

Declare LUNs for the backstore device, to form a valid SAN storage object:

targetcli per default automatically assigns the default ID '0' to the LUN, and then changes the working context to the new SAN storage object. The target is now created, and exports /dev/sdb as LUN 0.

Return to the underlying Endpoint as the working context, as no attributes need to be set or modified for standard LUNs:

Define access rights

Configure the access rights to allow logins from initiators. This requires setting up individual access rights for each initiator, based on its WWPN.

Determine the WWPN for the respective Fibre Channel initiator. For instance, for Linux initiator systems, use:

For a simple setup, grant access to the initiator with the WWPN as determined above:

targetcli per default automatically adds the appropriate mapped LUNs.

Display the object tree

The resulting Fibre Channel SAN object hierarchy looks as follows (displayed from the root object):

Persist the configuration

Use saveconfig from the root context to persist the target configuration across OS reboots:

Spec file

Datera spec files define the fabric-dependent feature set, capabilities and available target ports of the specific underlying fabric.

In particular, the QLogic spec file /var/target/fabric/qla2xxx.spec is included via RTSlib. WWN values are extracted via /sys/class/fc_host/host*/port_name in wwn_from_files_filter, and are presented in the targetcliWWN working context to register individual Fibre Channel port GUIDs.

Scripting with RTSlib

Setup script

The following Python code illustrates how to setup a basic Fibre Channel target and export a mappedLUN:

Note that while Fibre Channel TPGs are masked by targetcli, they are not masked by RTSlib.

Object tree

The resulting object tree looks as follows:

Specifications

The following specifications are available as T10 Working Drafts:

• Fibre Channel Protocol (FCP): FCP defines the protocol to be used to transport SCSI commands over the T11 Fibre Channel interface, 1995-12-04
• SCSI Fibre Channel Protocol - 2 (FCP-2): FCP-2 defines the second generation Fibre Channel Protocol to be used to transport SCSI commands over the T11 Fibre Channel interface, 2002-10-23
• Fibre Channel Protocol - 3 (FCP-3): FCP-3 defines the third generation Fibre Channel Protocol to be used to transport SCSI commands over the T11 Fibre Channel interface, 2005-09-13
• Fibre Channel Protocol - 4 (FCP-4): FCP-4 defines the fouth generation Fibre Channel Protocol to be used to transport SCSI commands over the T11 Fibre Channel interface, 2010-11-09

Glossary

• Host Bus Adapter (HBA): provides the mechanism to connect Fibre Channel devices to processors and memory.

RFCs

• RFC 2625: IP and ARP over Fibre Channel
• RFC 2837: Definitions of Managed Objects for the Fabric Element in Fibre Channel Standard
• RFC 3723: Securing Block Storage Protocols over IP
• RFC 4044: Fibre Channel Management MIB
• RFC 4625: Fibre Channel Routing Information MIB
• RFC 4626: MIB for Fibre Channel's Fabric Shortest Path First (FSPF) Protocol

See also

• LinuxIO, targetcli
• FCoE, iSCSI, iSER, SRP, tcm_loop, vHost

Notes

1. ↑Linus Torvalds (2012-07-21). 'Linux 3.5 released'. marc.info.
2. ↑Nicholas Bellinger (2012-09-05). 'Re: targetcli qla2xxx create fails'. spinics.net.

External links

• RTSlib Reference Guide [HTML][PDF]
• Fibre Channel Wikipedia entry
• QLogic Wikipedia entry
• QLogic website
• Emulex website
• T11 home page