6.7
Table Of Contents
- vSphere Storage
- Contents
- About vSphere Storage
- Introduction to Storage
- Getting Started with a Traditional Storage Model
- Overview of Using ESXi with a SAN
- Using ESXi with Fibre Channel SAN
- Configuring Fibre Channel Storage
- Configuring Fibre Channel over Ethernet
- Booting ESXi from Fibre Channel SAN
- Booting ESXi with Software FCoE
- Best Practices for Fibre Channel Storage
- Using ESXi with iSCSI SAN
- Configuring iSCSI Adapters and Storage
- ESXi iSCSI SAN Recommendations and Restrictions
- Configuring iSCSI Parameters for Adapters
- Set Up Independent Hardware iSCSI Adapters
- Configure Dependent Hardware iSCSI Adapters
- Configure the Software iSCSI Adapter
- Configure iSER Adapters
- Modify General Properties for iSCSI or iSER Adapters
- Setting Up Network for iSCSI and iSER
- Using Jumbo Frames with iSCSI
- Configuring Discovery Addresses for iSCSI Adapters
- Configuring CHAP Parameters for iSCSI Adapters
- Configuring Advanced Parameters for iSCSI
- iSCSI Session Management
- Booting from iSCSI SAN
- Best Practices for iSCSI Storage
- Managing Storage Devices
- Storage Device Characteristics
- Understanding Storage Device Naming
- Storage Rescan Operations
- Identifying Device Connectivity Problems
- Enable or Disable the Locator LED on Storage Devices
- Erase Storage Devices
- Working with Flash Devices
- About VMware vSphere Flash Read Cache
- Working with Datastores
- Types of Datastores
- Understanding VMFS Datastores
- Upgrading VMFS Datastores
- Understanding Network File System Datastores
- Creating Datastores
- Managing Duplicate VMFS Datastores
- Increasing VMFS Datastore Capacity
- Administrative Operations for Datastores
- Set Up Dynamic Disk Mirroring
- Collecting Diagnostic Information for ESXi Hosts on a Storage Device
- Checking Metadata Consistency with VOMA
- Configuring VMFS Pointer Block Cache
- Understanding Multipathing and Failover
- Failovers with Fibre Channel
- Host-Based Failover with iSCSI
- Array-Based Failover with iSCSI
- Path Failover and Virtual Machines
- Pluggable Storage Architecture and Path Management
- Viewing and Managing Paths
- Using Claim Rules
- Scheduling Queues for Virtual Machine I/Os
- Raw Device Mapping
- Storage Policy Based Management
- Virtual Machine Storage Policies
- Workflow for Virtual Machine Storage Policies
- Populating the VM Storage Policies Interface
- About Rules and Rule Sets
- Creating and Managing VM Storage Policies
- About Storage Policy Components
- Storage Policies and Virtual Machines
- Default Storage Policies
- Using Storage Providers
- Working with Virtual Volumes
- About Virtual Volumes
- Virtual Volumes Concepts
- Virtual Volumes and Storage Protocols
- Virtual Volumes Architecture
- Virtual Volumes and VMware Certificate Authority
- Snapshots and Virtual Volumes
- Before You Enable Virtual Volumes
- Configure Virtual Volumes
- Provision Virtual Machines on Virtual Volumes Datastores
- Virtual Volumes and Replication
- Best Practices for Working with vSphere Virtual Volumes
- Troubleshooting Virtual Volumes
- Filtering Virtual Machine I/O
- Storage Hardware Acceleration
- Hardware Acceleration Benefits
- Hardware Acceleration Requirements
- Hardware Acceleration Support Status
- Hardware Acceleration for Block Storage Devices
- Hardware Acceleration on NAS Devices
- Hardware Acceleration Considerations
- Thin Provisioning and Space Reclamation
- Using vmkfstools
- vmkfstools Command Syntax
- The vmkfstools Command Options
- -v Suboption
- File System Options
- Virtual Disk Options
- Supported Disk Formats
- Creating a Virtual Disk
- Initializing a Virtual Disk
- Inflating a Thin Virtual Disk
- Converting a Zeroedthick Virtual Disk to an Eagerzeroedthick Disk
- Removing Zeroed Blocks
- Deleting a Virtual Disk
- Renaming a Virtual Disk
- Cloning or Converting a Virtual Disk or RDM
- Extending a Virtual Disk
- Upgrading Virtual Disks
- Creating a Virtual Compatibility Mode Raw Device Mapping
- Creating a Physical Compatibility Mode Raw Device Mapping
- Listing Attributes of an RDM
- Displaying Virtual Disk Geometry
- Checking and Repairing Virtual Disks
- Checking Disk Chain for Consistency
- Storage Device Options
Step Description
Set Up CHAP for Target You can also configure different CHAP credentials for each discovery address or static
target.
Enable Jumbo Frames for
Networking
If your iSCSI environment supports Jumbo Frames, enable them for the adapter.
Dependent Hardware iSCSI Considerations
When you use dependent hardware iSCSI adapters with ESXi, certain considerations apply.
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When you use any dependent hardware iSCSI adapter, performance reporting for a NIC associated
with the adapter might show little or no activity, even when iSCSI traffic is heavy. This behavior occurs
because the iSCSI traffic bypasses the regular networking stack.
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If you use a third-party virtual switch, for example Cisco Nexus 1000V DVS, disable automatic
pinning. Use manual pinning instead, making sure to connect a VMkernel adapter (vmk) to an
appropriate physical NIC (vmnic). For information, refer to your virtual switch vendor documentation.
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The Broadcom iSCSI adapter performs data reassembly in hardware, which has a limited buffer
space. When you use the Broadcom iSCSI adapter in a congested network or under heavy load,
enable flow control to avoid performance degradation.
Flow control manages the rate of data transmission between two nodes to prevent a fast sender from
overrunning a slow receiver. For best results, enable flow control at the end points of the I/O path, at
the hosts and iSCSI storage systems.
To enable flow control for the host, use the esxcli system module parameters command. For
details, see the VMware knowledge base article at http://kb.vmware.com/kb/1013413
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Dependent hardware adapters support IPv4 and IPv6.
View Dependent Hardware iSCSI Adapters
View a dependent hardware iSCSI adapter to verify that it is correctly loaded.
If installed, the dependent hardware iSCSI adapter (vmhba#) appears on the list of storage adapters
under such category as, for example, Broadcom iSCSI Adapter. If the dependent hardware adapter does
not appear on the list of storage adapters, check whether it needs to be licensed. See your vendor
documentation.
Procedure
1 Navigate to the host.
2 Click the Configure tab.
3 Under Storage, click Storage Adapters.
4 Select the adapter (vmhba#) to view.
The default details for the adapter appear, including the iSCSI name, iSCSI alias, and the status.
vSphere Storage
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