Red Hat NETWORK 3.6 - Bedienungsanleitung PDF herunterladen (Seite 24)

iSER- ConnectX’s RDMA capabilities can be used to accelerate hypervisor traffic such as storage

access, VM migration, data and VM replication. The use of RDMA moves the data from node-to-node

to the ConnectX hardware, producing much faster performance, lower latency/access-time, and lower

CPU overhead and provides zero-copy message transfers for SCSI packets. Thus, the RAID for a

cluster may now be connected via InfiniBand and result in saving additional storage costs such as Fibre

Channel, thereby greatly reducing the cost of the cluster. When using RDMA-based iSCSI (iSER)

compared to traditional TCP/IP based iSCSI, RDMA can provide 10X faster performance. This will

also consolidate the efforts of both Ethernet and InfiniBand communities, and reduce the number of

Storage protocols a user has to learn and maintain.

Mellanox’s Storage Accelerator (VSA) software is a highly scalable, high performance, low-latency

software solution for tier-one storage and gateways that provides ultra-fast remote block storage access

that accelerates access to SAN, DAS, or Flash based storage.

Once the VSA is installed on your server, run vscli and perform the following VSA commands to

enter VSA configuration mode:

(host)# vscli

VSA-root> config

VSA-/# show disks/

4 http://www.mellanox.com/content/pages.php?

pg=products_dyn&product_family=26&menu_section=34

Figure 9: Using the ConnectX-3 adapter results in faster I/O traffic delivery

rather than using multiple 10GbE ports

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Red Hat NETWORK 3.6 - Bedienungsanleitung Seite 24