HP StoreVirtual 4000 10.0 HP LeftHand Storage Multi-Site Configuration Guide (
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- HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 1
designs for network configurations and instructions about implementing the network designs. The intended audience is system administrators who manage HP LeftHand Storage solutions. For the latest version of this guide, see the HP website http://www.hp.com/support/LeftHandManuals. HP Part Number - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 2
is subject to change without notice. The only warranties for HP products and services are set forth services. Nothing herein should be construed as constituting an additional warranty. HP shall not be liable for technical or editorial errors or omissions contained herein. Acknowledgements Microsoft - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 3
network 5 Common Multi-Site SAN network designs 6 Sample recommended network configurations for Multi-Site SANs 7 Using multiple subnets ...9 Connecting volumes to multiple subnets in a Multi-Site SAN using the Microsoft iSCSI initiator...10 Using multiple cluster VIPs when connecting to a Multi - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 4
from a Multi-Site cluster 29 To remove the storage systems from the site 29 Removing servers from a site...29 3 Support and other resources 30 Contacting HP...30 Subscription service...30 Rack stability...30 Customer self repair...30 HP Insight Remote Support Software 30 Related information...31 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 5
storage systems located in the same site. • Failover Manager support for automatic failover/failback in three-site configurations without requiring a physical storage , see "Using the Failover Manager" in the HP LeftHand Storage User Guide. • Failure protection through data replication, site design - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 6
5 MS latency. For information about the Failover Manager, see "Using the Failover Manager" in the HP LeftHand Storage User Guide. Common Multi-Site SAN network designs Based on the Multi-Site SAN configuration, there are many network designs that can be implemented that solve the redundancy, high - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 7
for Multi-Site SANs This section provides illustrations of common network configurations for the topologies described in Table 1 (page 6). The clusters and sites can have many more storage systems than are depicted in these illustrations, which focus on the network design. Figure 1 Dual - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 8
Figure 3 Triangular network with Failover Manager 1. Dual redundant GigE links Figure 4 Hub and spoke network core with redundant links out to each site 1. Core network hub and spoke 8 Designing a Multi-Site SAN - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 9
advantage of the following Multi-Site SAN features: • One Virtual IP address per site. iSCSI discovery sessions are terminated on a storage system that is local to the application server in that site. • Virtual IP addresses are hosted only on storage systems that reside in the same subnet as the VIP - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 10
the default Target Portal setting. Using multiple cluster VIPs when connecting to a Multi-Site SAN Use the Virtual IP address of the cluster when connecting to volumes. In a multiple subnet configuration, you must enter both of the VIPs of the multi-site cluster on all the application servers. In - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 11
restore... check box. 6. Click Advanced to open the Advanced Settings window. 7. Configure the Advanced Settings as follows: • For Local adaptor, select Microsoft iSCSI initiator. • For Source IP, select the IP address of the storage NIC to connect to the volume. • For Target portal, leave as - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 12
multiple subnets in a Multi-Site SAN, the HP LeftHand DSM for Microsoft MPIO or Microsoft DSM will only build I/O paths to the storage systems that are in the same subnet as the application server. See the HP LeftHand Storage DSM for MPIO Deployment Guide for more information about MPIO. When using - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 13
be properly recovered. Maintaining quorum can be either an automated process or manually recovered by an Administrator. Table 2 (page 13) summarizes common Multi-Site SAN and manager configurations. Table 2 Common configurations of Multi-Site SANs Number of sites Cluster/site setup Total number - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 14
Figure 11 Two physical sites, logical third site: cluster spans two sites, Failover Manager in logical third site 1. Volumes are configured with Network RAID-10 Figure 12 Three physical sites: cluster spans three sites 1. Volumes are configured with Network RAID-10+1 14 Designing a Multi-Site SAN - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 15
one site is the primary site 1. Volumes are configured with Network RAID-10 Best practices for configuring quorum and managers in a Multi-Site SAN environment Configuring the appropriate number of managers in a Multi-Site SAN on the appropriate storage systems is an important part of setting up the - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 16
for the Multi-Site SAN and associated supported configurations. To protect the data across sites, you must choose a data protection level with a number of mirrors that is at least equal to the number of sites in the configuration. For example, if the storage cluster spans three sites, then volumes - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 17
a complete site is offline, you can set up application clusters (Microsoft Cluster Server, VMware vSphere Cluster, Linux Cluster, and so forth) the HP LeftHand Storage DSM for MPIO Deployment Guide. Using the Primary Site designation in two-site configurations The Multi-Site SAN software supports - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 18
SAN/iQ from a Multi-Site SAN to a Disaster Recovery features, is compatible with or Backup site. See the chapter Multi-Site SAN. "Understanding and Planning Remote Copy" in the HP LeftHand Storage Remote Copy User Guide. Multiple subnet clusters in the same site The Multi-Site SAN features - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 19
for recovering quorum). The Virtual Manager is used in two-site configurations, and is not as commonly used as the Failover Manager. For more information about the Virtual Manager, see the chapter "Working with managers and quorum" in the HP LeftHand Storage User Guide. Alternative setups 19 - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 20
. For more information, see "Registering Advanced Features" in the HP LeftHand Storage User Guide for information about registering your storage systems. Have the following information ready: • The layout for storage systems and sites • IP addresses, subnets, and VIPs to use for the Multi-Site - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 21
configured, you need to review the manager configuration and adjust it according to the Multi-Site configuration you have planned. See "Configuring cluster. 2. Create a site and then assign storage systems to the site. 3. Create the additional sites with storage systems, up to a total of three sites. - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 22
5. Click OK when you have finished creating the site. The Set up Sites window opens, displaying the first site created and the remaining unassigned storage systems in the list. 6. Repeat these steps to create additional sites. 7. When you have finished creating sites, click Next to continue with the - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 23
then click Next. 8. Follow the steps in "Creating sites" (page 22) to create the sites using the listed storage systems. 9. After creating the sites, click Next The wizard opens the Assign Virtual IPs window. If the current cluster has a VIP assigned, it shows in this window. You can either use this - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 24
. The Failover Manager can run on VMware ESX Server, VMware Server, VMware Player, or Microsoft Hyper-V Server. For detailed instructions for installing and configuring the Failover Manager see "Using the Failover Manager" in the HP LeftHand Storage User Guide. 24 Implementing a Multi-Site SAN - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 25
to become less than optimal. Be sure to change the manager configuration to best reflect the new configuration of the management group. See the section "Best practice for managers in a management group" in the HP LeftHand Storage User Guide. 1. Use Find to search for the Failover Manager - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 26
Details tab shows the storage systems as unassigned. The site designation has no effect outside of the Multi-Site SAN configuration. Figure 17 No assignments of the storage systems and servers. For more information on using the map view tools, see the HP LeftHand Storage User Guide. Sites map views - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 27
you are setting up a primary configuration, select the Primary box. 5. In the Site Systems section, click Add to add storage systems to the site. 6. Select site you want to edit and then click Continue. 3. Make the desired changes. 4. Click OK when you are finished. Deleting a site You would delete - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 28
the new storage systems. • Plan the IP addresses and locations for the new storage systems to fit into the overall design for your Multi-Site SAN. To add capacity 1. Add the license keys to the new storage systems. See "Registering Advanced Features" in the HP LeftHand Storage User Guide for more - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 29
to become less than optimal. Be sure to change the manager configuration to best reflect the new configuration of the management group. See the section "Best practice for managers in a management group" in the HP LeftHand Storage User Guide. Removing servers from a site You can remove servers - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 30
the installation or upgrade of your product and to enable enhanced delivery of your HP Warranty, HP Care Pack Service or HP contractual support agreement. HP Insight Remote Support supplements your monitoring, 24x7 to ensure maximum system availability by providing intelligent event diagnosis - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 31
in this guide from the Manuals page: http://www.hp.com/support/LeftHandManuals HP websites For additional information, see the following HP websites: • http://www.hp.com • http://www.hp.com/go/storage • http://www.hp.com/service_locator • http://www.hp.com/support/manuals • http://www.hp.com/support - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 32
documentation that meets your needs. To help us improve the documentation, send any errors, suggestions, or comments to Documentation Feedback ([email protected]). Include the document title and part number, version number, or the URL when submitting your feedback. 32 Documentation feedback - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 33
NIC in the bond until the preferred NIC resumes operation. At that point, data transfer resumes on the preferred NIC. Adaptive Load Balancing A type Configuration Summary The Configuration Summary displays an overview of the volumes, snapshots, storage systems, and iSCSI sessions in the HP - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 34
virtual items displayed in the CMC • Hardware tab - displays the icons that represent the physical storage units. Hardware reports display point-in-time statistics about the performance and health of the storage system, its drives, and configuration. The hostname on a storage system is the user - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 35
stored as parity distributed across the disks. Parity allows the storage system to use more disk capacity for data storage designation assigned by the administrator in the HP P4000 Centralized Management Console. /all of the application servers. In configurations that do not designate a primary site - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 36
the Cliq Command Line Interface. Striped data is stored across all disks in the cluster. You might change the configuration of a volume, for example, change data protection level, add a storage system, or remove a storage system. Because of your change, the pages in the volume must be reorganized - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 37
pack split mirror standard cluster storage server stripe synchronize target secret temporary space thin provisioning trap Trap Community String unicast VIP virtual IP address virtual machine virtual manager volume volume lists Shared snapshots occur when a clone point is created from a newer - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 38
volumes make a volume set. The size of the virtual device communicated to the operating system and the applications. HP P4000 VSS Provider is the hardware provider that supports the Volume Shadow Copy Service on the HP P4000 SAN Solution. Volume Shadow Copy Service See temporary space . 38 Glossary - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 39
SAN, 33 H help obtaining, 30 high availability data protection level, 16 site and manager configuration, 12 HP technical support, 30 I implementing the Multi-Site SAN, 20 Insight Remote Support software, 30 installation preparing for, 20 installing the Multi-Site SAN, 20 M management group creating - HP StoreVirtual 4000 | 10.0 HP LeftHand Storage Multi-Site Configuration Guide ( - Page 40
assigning servers to, 6 configuring for high availability and redundancy storage systems adding to sites, 28 removing from a site, 29 subnets setting up multiple for a Multi-Site SAN, 9 setting with MPIO, 12 Subscriber's Choice, HP, 30 support software, remote, 30 T technical support HP, 30 service
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HP LeftHand Storage Multi-Site Configuration
Guide
Abstract
This guide contains detailed instructions for designing and implementing the Multi-Site SAN features of HP LeftHand Storage.
The Multi-Site SAN features enable you to synchronously and automatically mirror data between geographic sites. Topics
include designs for network configurations and instructions about implementing the network designs. The intended audience
is system administrators who manage HP LeftHand Storage solutions.
For the latest version of this guide, see the HP website
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HP Part Number: AX696-96187
Published: November 2012
Edition: 6