6.0.1
Table Of Contents
- vSphere Storage
- Contents
- About vSphere Storage
- Updated Information
- Introduction to Storage
- 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 Requirements
- ESXi iSCSI SAN Restrictions
- Setting LUN Allocations for iSCSI
- Network Configuration and Authentication
- Set Up Independent Hardware iSCSI Adapters
- About Dependent Hardware iSCSI Adapters
- Dependent Hardware iSCSI Considerations
- Configure Dependent Hardware iSCSI Adapters
- About the Software iSCSI Adapter
- Modify General Properties for iSCSI Adapters
- Setting Up iSCSI Network
- 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 Refresh and Rescan Operations
- Identifying Device Connectivity Problems
- Edit Configuration File Parameters
- Enable or Disable the Locator LED on Storage Devices
- Working with Flash Devices
- About VMware vSphere Flash Read Cache
- Working with Datastores
- Understanding VMFS Datastores
- Understanding Network File System Datastores
- Creating Datastores
- Managing Duplicate VMFS Datastores
- Upgrading 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
- Raw Device Mapping
- Working with Virtual Volumes
- Virtual Machine Storage Policies
- Upgrading Legacy Storage Profiles
- Understanding Virtual Machine Storage Policies
- Working with Virtual Machine Storage Policies
- Creating and Managing VM Storage Policies
- Storage Policies and Virtual Machines
- Default Storage Policies
- Assign Storage Policies to Virtual Machines
- Change Storage Policy Assignment for Virtual Machine Files and Disks
- Monitor Storage Compliance for Virtual Machines
- Check Compliance for a VM Storage Policy
- Find Compatible Storage Resource for Noncompliant Virtual Machine
- Reapply Virtual Machine Storage Policy
- Filtering Virtual Machine I/O
- VMkernel and Storage
- 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
- Storage Thick and Thin Provisioning
- Using Storage Providers
- Using vmkfstools
- vmkfstools Command Syntax
- vmkfstools Options
- -v Suboption
- File System Options
- Virtual Disk Options
- Supported Disk Formats
- Creating a Virtual Disk
- Example for Creating a Virtual Disk
- Initializing a Virtual Disk
- Inflating a Thin Virtual Disk
- Removing Zeroed Blocks
- Converting a Zeroedthick Virtual Disk to an Eagerzeroedthick Disk
- Deleting a Virtual Disk
- Renaming a Virtual Disk
- Cloning or Converting a Virtual Disk or RDM
- Example for Cloning or Converting a Virtual Disk
- Migrate Virtual Machines Between DifferentVMware Products
- Extending a Virtual Disk
- Upgrading Virtual Disks
- Creating a Virtual Compatibility Mode Raw Device Mapping
- Example for Creating a Virtual Compatibility Mode RDM
- 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
- Index
File-Based (VMFS) Solution
When you use an ESXi system in conjunction with a SAN, you must decide whether le-based tools are
more suitable for your particular situation.
When you consider a le-based solution that uses VMware tools and VMFS instead of the array tools, be
aware of the following points:
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Using VMware tools and VMFS is beer for provisioning. One large LUN is allocated and
multiple .vmdk les can be placed on that LUN. With an RDM, a new LUN is required for each virtual
machine.
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Snapshoing is included with your ESXi host at no extra cost.
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Using VMFS is easier for ESXi administrators.
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ESXi administrators who use the le-based solution are more independent from the SAN administrator.
Third-Party Management Applications
You can use third-party management applications in conjunction with your ESXi host.
Most SAN hardware is packaged with storage management software. In many cases, this software is a web
application that can be used with any web browser connected to your network. In other cases, this software
typically runs on the storage system or on a single server, independent of the servers that use the SAN for
storage.
Use this third-party management software for the following tasks:
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Storage array management, including LUN creation, array cache management, LUN mapping, and
LUN security.
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Seing up replication, check points, snapshots, or mirroring.
If you decide to run the SAN management software on a virtual machine, you gain the benets of running a
virtual machine, including failover using vMotion and VMware HA. Because of the additional level of
indirection, however, the management software might not be able to see the SAN. In this case, you can use
an RDM.
N Whether a virtual machine can run management software successfully depends on the particular
storage system.
SAN Storage Backup Considerations
Having a proper backup strategy is one of the most important aspects of SAN management. In the SAN
environment, backups have two goals. The rst goal is to archive online data to oine media. This process
is repeated periodically for all online data on a time schedule. The second goal is to provide access to oine
data for recovery from a problem. For example, database recovery often requires retrieval of archived log
les that are not currently online.
Scheduling a backup depends on a number of factors:
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Identication of critical applications that require more frequent backup cycles within a given period of
time.
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Recovery point and recovery time goals. Consider how precise your recovery point needs to be, and
how long you are willing to wait for it.
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The rate of change (RoC) associated with the data. For example, if you are using
synchronous/asynchronous replication, the RoC aects the amount of bandwidth required between the
primary and secondary storage devices.
vSphere Storage
32 VMware, Inc.