vSphere Storage - ESXi 5.1 - Documentation - VMware

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vSphere Storage Types of Physical Storage The ESXi storage management process starts with storage space that your storage administrator preallocates on different storage systems. ESXi supports the following types of storage: Local Storage Stores virtual machine files on internal or directly connected external storage disks. Networked Storage Stores virtual machine files on external storage disks or arrays attached to your host through a direct connection or through a high-speed network. Local Storage Local storage can be internal hard disks located inside your ESXi host, or it can be external storage systems located outside and connected to the host directly through protocols such as SAS or SATA. Local storage does not require a storage network to communicate with your host. You need a cable connected to the storage unit and, when required, a compatible HBA in your host. The following illustration depicts a virtual machine using local SCSI storage. Figure 1-1. Local Storage VMFS Host virtual machine SCSI In this example of a local storage topology, the host uses a single connection to a storage disk. On that disk, you can create a VMFS datastore, which you use to store virtual machine disk files. Although this storage configuration is possible, it is not a recommended topology. Using single connections between storage arrays and hosts creates single points of failure (SPOF) that can cause interruptions when a connection becomes unreliable or fails. ESXi supports a variety of internal or external local storage devices, including SCSI, IDE, SATA, USB, and SAS storage systems. Regardless of the type of storage you use, your host hides a physical storage layer from virtual machines. NOTE You cannot use IDE/ATA or USB drives to store virtual machines. Local storage devices do not support sharing across multiple hosts. A datastore on a local storage device can be accessed by only one host. Because the majority of local storage devices do not support multiple connections, you cannot use multiple paths to access local storage. 14 VMware, Inc.
Networked Storage Networked storage consists of external storage systems that your ESXi host uses to store virtual machine files remotely. Typically, the host accesses these systems over a high-speed storage network. Networked storage devices are shared. Datastores on networked storage devices can be accessed by multiple hosts concurrently. ESXi supports the following networked storage technologies. NOTE Accessing the same storage through different transport protocols, such as iSCSI and Fibre Channel, at the same time is not supported. Fibre Channel (FC) Stores virtual machine files remotely on an FC storage area network (SAN). FC SAN is a specialized high-speed network that connects your hosts to high-performance storage devices. The network uses Fibre Channel protocol to transport SCSI traffic from virtual machines to the FC SAN devices. To connect to the FC SAN, your host should be equipped with Fibre Channel host bus adapters (HBAs). Unless you use Fibre Channel direct connect storage, you need Fibre Channel switches to route storage traffic. If your host contains FCoE (Fibre Channel over Ethernet) adapters, you can connect to your shared Fibre Channel devices by using an Ethernet network. Fibre Channel Storage depicts virtual machines using Fibre Channel storage. Figure 1-2. Fibre Channel Storage fibre channel HBA SAN VMFS Host virtual machine fibre array Chapter 1 Introduction to Storage In this configuration, a host connects to a SAN fabric, which consists of Fibre Channel switches and storage arrays, using a Fibre Channel adapter. LUNs from a storage array become available to the host. You can access the LUNs and create datastores for your storage needs. The datastores use the VMFS format. For specific information on setting up the Fibre Channel SAN, see Chapter 3, “Using ESXi with Fibre Channel SAN,” on page 35. VMware, Inc. 15
Page 1 and 2: vSphere Storage ESXi 5.1 vCenter Se
Page 3 and 4: Contents About vSphere Storage 9 Up
Page 5 and 6: Configuring Discovery Addresses for
Page 7 and 8: 22 Storage Thin Provisioning 225 St
Page 9 and 10: About vSphere Storage vSphere Stora
Page 11 and 12: Updated Information This vSphere St
Page 13: Introduction to Storage 1 This intr
Page 17 and 18: Network-attached Storage (NAS) Stor
Page 19 and 20: Table 1-1. Storage Device Informati
Page 21 and 22: Table 1-2. Storage Adapter Informat
Page 23 and 24: Display Datastore Information in th
Page 25 and 26: Figure 1-6. Virtual machines access
Page 27 and 28: Overview of Using ESXi with a SAN 2
Page 29 and 30: ESXi Hosts and Multiple Storage Arr
Page 31 and 32: Not all applications need to be on
Page 33 and 34: n Overall impact on SAN environment
Page 35 and 36: Using ESXi with Fibre Channel SAN 3
Page 37 and 38: With ESXi hosts, use a single-initi
Page 39 and 40: Configuring Fibre Channel Storage 4
Page 41 and 42: 2 Check that all SAN components mee
Page 43 and 44: 3 Click VM Options. 4 Click the Fib
Page 45 and 46: Configuring Fibre Channel over 5 Et
Page 47 and 48: 6 Select the network adapter (vmnic
Page 49 and 50: 6 Click OK. The software FCoE adapt
Page 51 and 52: Modifying Fibre Channel Storage for
Page 53 and 54: n To use boot from SAN, make sure t
Page 55 and 56: 3 Execute these commands for SPB to
Page 57 and 58: Booting ESXi from Fibre Channel SAN
Page 59 and 60: 2 Configure the storage array. a Fr
Page 61 and 62: g Select 1. WWPN. (Boot this device
Page 63 and 64: Booting ESXi with Software FCoE 8 E
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Install and Boot ESXi from Software
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Best Practices for Fibre Channel 9
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Storage Array Performance Storage a
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Using ESXi with iSCSI SAN 10 You ca
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The 16-hexadecimal digits are text
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Discovery A discovery session is pa
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Configuring iSCSI Adapters and 11 S
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For active-passive storage arrays n
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Change Name and IP Address for Inde
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n Broadcom iSCSI adapters do not su
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The software iSCSI adapter configur
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Procedure 1 Browse to the host in t
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Figure 11-2. 1:1 adapter mapping on
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You created the virtual VMkernel ad
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5 Click Add and select a VMkernel a
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5 Create iSCSI VMkernel adapters fo
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Managing iSCSI Network Special cons
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Enable Jumbo Frames for Independent
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Procedure 1 Log in to the vSphere C
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Table 11-4. CHAP Security Level (Co
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2 Under Adapter Details, click the
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3 From the list of available target
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Table 11-5. Additional Parameters f
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Procedure u To list iSCSI sessions,
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Modifying iSCSI Storage Systems for
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n Certain EMC CLARiiON CX3 models m
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NetApp Storage Systems For NetApp s
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Booting from iSCSI SAN 13 When you
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4 Select the I/O port to configure.
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2 Change Boot Sequence in BIOS on p
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Isolated iSCSI and Management Netwo
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Best Practices for iSCSI Storage 14
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Because each application has differ
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Generally, applications or systems
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Managing Storage Devices 15 Manage
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Storage Refresh and Rescan Operatio
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Change the Number of Scanned LUNs B
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It is possible for a device to retu
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To avoid these problems, your host
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PDL Conditions and High Availabilit
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Solid State Disks Enablement 16 In
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4 Unclaim the device. u You can unc
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6 Check the device status by runnin
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Best Practices for SSD Devices Foll
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Working with Datastores 17 Datastor
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n Scalability improvements on stora
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n Creating a template n Deploying a
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In an L3 environment the following
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The datastore on the SCSI-based sto
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Procedure 1 Log in to the vSphere C
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When you perform datastore resignat
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2 Click the Configuration tab and c
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Option Description Use free space D
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3 In the Inventory panel, choose Da
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Turn off Storage Filters When you p
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Set Up Dynamic Disk Mirroring Typic
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4 Click Next. 5 Select the device t
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Raw Device Mapping 18 Raw device ma
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Snapshots Makes it possible to use
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n You cannot convert larger than 2T
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9 In the Ready to Complete New Virt
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Manage Paths for a Mapped LUN in th
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VMkernel and Storage 19 The VMkerne
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Chapter 19 VMkernel and Storage n A
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Understanding Multipathing and 20 F
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Figure 20-2. Host-Based Path Failov
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Figure 20-4. Port Reassignment 10.0
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Figure 20-5. Pluggable Storage Arch
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6 The SATP interprets the I/O comma
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3 Click Devices under View. 4 Selec
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2 In the Paths panel, right-click t
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This example indicates the followin
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Procedure 1 To define a new claim r
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Mask Paths You can prevent the host
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Procedure 1 To add a claim rule for
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Storage Hardware Acceleration 21 Th
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On your host, the hardware accelera
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Procedure u Run the esxcli --server
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3 Load both claim rules by running
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Uninstall NAS Plug-Ins To uninstall
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Storage Thin Provisioning 22 With E
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You can use Storage vMotion or cros
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3 Click the Hardware tab and select
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Requirements To use the thin provis
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Procedure Chapter 22 Storage Thin P
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Using Storage Vendor Providers 23 W
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n Alarms indicate a change in stora
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3 In the Storage Providers list, vi
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Virtual Machine Storage Profiles 24
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View Existing Storage Capabilities
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Assign User-Defined Storage Capabil
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Remove a Storage Capability in the
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Create a Virtual Machine Storage Pr
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Procedure 1 Open the Profiles tab o
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Monitor Storage Compliance for Virt
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Using vmkfstools 25 vmkfstools is o
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File System Options File system opt
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When upgrading the datastore, use t
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Renaming a Virtual Disk This option
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Listing Attributes of an RDM This o
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Index Symbols * next to path 201 A
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G GPT 18 H hardware acceleration ab
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limitations 42 requirements 41 O on
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EMC CLARiiON 52, 114 EMC Symmetrix
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vSphere Storage - ESXi 5.1 - Documentation - VMware

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