![]() ![]() ![]() He already mentioned that he used different IOPS settings in his first post, so this shouldn't be the issue. I am at a loss and Nimble Storage have spoken with me and troubleshot this thing and can't figure out what could be wrong.Īny input or suggestions would be awesome! Here is the kicker! When I use the iSCSI Initiator with MPIO enabled on my Windows box, on the SAME network, I am seeing increased throughput with even fewer paths connected, except with slightly slower Random Reads/Writes. The Sequential Read and Write are, by their standards, about 1/4th of what they would expect to see. OS : Windows Server 2012 Server Standard Edition (full installation) (圆4) I am told by the vendor that we have configured the unit to best practice standards and that nothing is wrong, but the throughput number we are saying are WAY off from what they would normally expect.ĭuring a speed test using CrystalDiskMark, we are seeing the following: As far as I can tell, the traffic is being distributed evenly across the NICs at about 22.8MBps or roughly 90MBps combined. I have configured ESXi 5.1 with MPIO and Round Robin enabled, I have tried settings the IOPS to 0, 1, 4 and default of 1000, neither option makes any difference to the throughput. 1x Nimble CS220 12TB iSCSI unit with 4 Active NICS and 4 failover NICs.2x HP DL560 G8's with 2 8-core Xeons and 128GB of RAM, I have 4 NIC ports dedicated to iSCSI traffic, they are connected to Brocade enterprise class 1GBe switches.The troubleshooting topics provide solutions to problems that you might encounter when using Virtual Volumes. Observe the following recommendations when you use Virtual Volumes with ESXi and vCenter Server. Best Practices for Working with Virtual Volumes.You can also group several VM objects or virtual machines to replicate them as a single unit. You can replicate a single VM object, such as a virtual disk. With the array-based replication, you can off-load replication of virtual machines to your storage array and use full replication capabilities of the array. Virtual Volumes supports replication and disaster recovery. You can provision virtual machines on a Virtual Volumes datastore. Provision Virtual Machines on Virtual Volumes Datastores.To configure your Virtual Volumes environment, follow several steps. To work with Virtual Volumes, you must make sure that your storage and vSphere environment are set up correctly. ![]() You can also use them to provision application images instantly. You can use them to create a quiesced copy for backup or archival purposes, or to create a test and rollback environment for applications. Virtual volumes snapshots serve many purposes. Snapshots are useful when you must revert repeatedly to the same virtual machine state, but you do not want to create multiple virtual machines. Snapshots preserve the state and data of a virtual machine at the time you take the snapshot. It generates certificates for newly added ESXi hosts and storage VASA providers that manage or represent Virtual Volumes storage systems. By default, the VMCA creates all internal certificates used in vSphere environment. VSphere includes the VMware Certificate Authority (VMCA).
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