A hardware alternative is to the full hba is an isoe card with an iscsi. Hbas are more expensive than software, but higher performance with more functionality. When deploying an iscsi based network, especially large iscsi san in datacenters, the choice of iscsi initiator is very critical and has a great impact on the choice of hardware, operating systems and your overall network architecture. Vmware vsphere supports both hardware and software iscsi initiators. The iscsi initiator is the software component that connects to the esxi host to the storage processor running as an iscsi target. There are still hardware iscsi initiators, such as those by qlogic, which make sense in. To access iscsi targets, your esxi host uses iscsi initiators the initiator is a software or hardware installed on your esxi host. You might need additional hardware if the test device offers other features. This is different than software iscsi,where the storage adapter is based on software. Brilliant so we can remove the cpu overhead of the software iscsi inititator and use these hardware dependant iscsi initiators. An example of a independent adapter is the qlogic qla4052 adapter. To determine whether additional hardware requirements apply, see the description for each test that appears for the device in windows hlk studio.
Their own iscsi software is however 100% supported. How to configure software iscsi adapters in vmware vsphere. A san boot lun can be implemented either by an iscsi hba or a network interface card nic and software iscsi stack. A software iscsi adapter is a vmware code built into the vmkernel. Hardware based raid systems iscsi testing prerequisites. With the software iscsi initiator, you dont need to purchase a hardware iscsi adapter. Vmware says cant mix and match hardware and software iscsi.
The software based iscsi initiator is the least expensive of the options, and is often included in the operating system os. Should i use software iscsi or hardware iscsi devices in vwware. Set up independent hardware iscsi adapters vmware docs. Software iscsi vs hardware assisted iscsi vmware forum. The communication between the host and the storage array happens over a tcp ip network wherein esxi host is configured with an iscsi initiator which can be hardware based hba or software based iscsi software initiator. It allows your host to connect to the iscsi storage device through standard network adapters. It has qlogic57810 nic card which support hardware assisted iscsi initiator toe iscsi. The iscsi initiator originates communication between your host and an external iscsi storage system and sends data to the storage system. How to connect an esxi host to an iscsi storage target. A hardware iscsi adapter is a thirdparty adapter that offloads iscsi and network. The iscsi san device can be accessed using standard network adapters.
Microsoft provides initiator software, which has to be used to map the target into the host system. When you set up a san boot device, you use a sanattached disk, such as a lun, as a. I have 2 10gb cna cards for connecting my esxi host. Scratch partition stops working after hardware or software iscsi is enabled on esxi with elxiscsi emulex driver. How to configure broadcom 5709 nic as iscsi hardware initiator. These technologies package scsi commands into network packets and direct them to the storage target. If use all 4 hardware and card goes, all connections are gone. To test an iscsi hardware based raid array, you need the following hardware. Software hardware iscsi initiator vmware vsphere 4 esx. An initiator is the storage deviceendpoint that initiates scsi request. The target owns the disk resource for esxi and should be. I have 8 nics, 4 on hardware iscsi as a single add in card, 4 non hardware iscsi on motherboard. Historically, esx has very limited support for hardwarebased iscsi hbas. The softwarebased iscsi initiator is the least expensive of the options.
Enable jumbo frames for software and dependent hardware iscsi. Should i use those or just stick with the vmware software iscsi device. Should i use software iscsi or hardware iscsi devi. All traffic datamanagementdata are going over these two 10gb connecti. With the software iscsi initiator, you dont need to purchase a hardware iscsi adapter to obtain iscsi connectivity, but all iscsi processing is done by the esxi.679 482 1552 1014 108 2 1363 457 1582 1320 1569 755 1049 67 865 1019 1001 769 762 1642 831 284 636 928 609 1574 155 1206 541 444 339 232 330 201 799 226 1133 1360 68