ESXi iSCSI Tweaks - Revision history

Ledhed at 10:11, 8 November 2014

2014-11-08T10:11:26Z

2012-11-30T00:39:35Z

2012-11-29T23:53:08Z

2012-11-29T23:47:27Z

2012-11-29T23:33:41Z

‎Advanced Settings (Software)

2012-11-29T23:33:04Z

‎Advanced Settings

2012-11-29T23:32:38Z

‎Disable Delayed Acknowledgement

2012-11-20T20:05:38Z

‎Dynamic Discovery

2012-11-04T09:36:49Z

2012-11-04T09:18:10Z

@@ Line 60: / Line 60: @@
   Disk.UseLunReset = 1
-. Disable VIAA (Hardware Accelerated Locking) by clicking "VMFS3" and setting the following options.<br>
+. Disable VAAI (Hardware Accelerated Locking) by clicking "VMFS3" and setting the following options.<br>
   DataMover.HardwareAcceleratedInit = 0

← Older revision		Revision as of 00:39, 30 November 2012
Line 1:		Line 1:
	== iSCSI Initiator Settings ==		== iSCSI Initiator Settings ==
		+
		+	If you're getting IO latency in ESXi and you're connected to an iSCSI storage device then these settings may help solve your IO problems.
		+	[[File:ESXi_iSCSI_IO_Timeouts.png\|450px]]<br>

	=== Network Configuration ===		=== Network Configuration ===

@@ Line 66: / Line 66: @@
   VMFS3.EnableBlockDelete = 0
 ''Note: This may already be disabled on ESXi 5.0u1 and later''
@@ Line 71: / Line 74: @@
 == References ==
 http://blogs.vmware.com/vsphere/2012/04/vaai-thin-provisioning-block-reclaimunmap-in-action.html
 [[Category:ESXi]]

← Older revision		Revision as of 23:47, 29 November 2012
Line 68:		Line 68:
	''Note: This may already be disabled on ESXi 5.0u1 and later''		''Note: This may already be disabled on ESXi 5.0u1 and later''

		+
		+
		+	== References ==
		+	http://blogs.vmware.com/vsphere/2012/04/vaai-thin-provisioning-block-reclaimunmap-in-action.html


	[[Category:ESXi]]		[[Category:ESXi]]

@@ Line 49: / Line 49: @@
 Scroll to the bottom and uncheck "DelayedACK"
-== Advanced Settings (Software) ==
+== Advanced Settings ==
-. Go to the Configuration tab, then click "Advanced Settings"<br>
+. Go to the Configuration tab, then under Software click "Advanced Settings"<br>
 . Click "Disk" then set the following options (scroll to the bottom).<br>

@@ Line 45: / Line 45: @@
 === Disable Delayed Acknowledgement ===
-Go to the General tab and click "Advanced".<br>
+Go to the iSCSI Software Adapter properties.<br>
 Scroll to the bottom and uncheck "DelayedACK"
 == Advanced Settings ==

@@ Line 15: / Line 15: @@
 === Dynamic Discovery ===
-DON'T USE IT!
+DON'T USE IT!<br>
 At most use it to discover the IQN of your target then remove it.<br>
 Once you have the IQN create Static Discoveries.<br>
 === Managing Paths ===

← Older revision		Revision as of 09:36, 4 November 2012
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	[[File:ISCSI-RoundRobin.png\|450px]]<br>		[[File:ISCSI-RoundRobin.png\|450px]]<br>

		+	==== Taking Advantage of Round Robin ====
		+	By default ESXi is set to send 1000 IO's through each path before utilizing another path.<br>
		+	If you want a performance boost from Round Robin you can lower the default value.<br>
		+	I haven't found a way to do this from within the vSphere client so you will have to dive into the CLI.<br>
		+	SSH into your VHost and run the following commands:
		+
		+	Get a device list:
		+	esxcli storage nmp device list
		+	Your device may look something like this:
		+	t10.Nexenta_iSCSI_Disk______0024977cf719012_________________
		+
		+	Change the default setting for your chosen device:
		+	esxcli storage nmp psp roundrobin deviceconfig set --cfgfile --type=iops --iops=1 --device=[DEVICENAME]
		+	Where [DEVICENAME] is the name if the device you got in the previous command '' "t10.Nexenta_iSCSI_Disk______0024977cf719012_________________" ''<br>
		+	--iops=1 is the number of IO's you want to send down each path before switching to the next path. (I recommend between 1 and 10)<br>

	=== Disable Delayed Acknowledgement ===		=== Disable Delayed Acknowledgement ===

@@ Line 2: / Line 2: @@
 === Network Configuration ===
-# Create a single vSwitch with the NICs you want to use for iSCSI and set them as "Unused Adapters" in the NIC Teaming tab.<br>[[File:VSwitch-iSCSI.png|300px]]
+. Create a single vSwitch with the NICs you want to use for iSCSI and set them as "Unused Adapters" in the NIC Teaming tab.<br>
-# Create a "vmkernel" for each NIC and override the Teaming Settings, moving only a single NIC to "Active Adapters".<br>[[File:Vmkernel-iSCSI 1.png|300px]][[File:Vmkernel-iSCSI 2.png|300px]][[File:Vmkernel-iSCSI 3.png|300px]]
+[[File:VSwitch-iSCSI.png|300px]]<br>
@@ Line 14: / Line 21: @@
+=== Managing Paths ===
 == Advanced Settings ==
   Disk.UseDeviceReset = 0
   Disk.UseLunReset = 1
 [[Category:ESXi]]