全部博文（74）
分类： 服务器与存储
2008-08-03 12:54:44
|
hacmp关于远程复制这部分一直在改进,但实际用的情况很少. 有几个GEORM and HAGEO and GLVM and HACMP/XD GLVM名词需要清楚. GEORM 和GLVM只能复制,不能监控 HAGEO和HACMP/XD GLVM在前面的基础上加入了监控功能,这样就灾难切换的功能,基本类似Veritas VVR. 以后将不会再有GEORM and HAGEO 了,现在还有主要是有些客户还在使用. 具体如下: |
HACMP/XD (Extended Distance) Geographic Logical Volume Manager (GLVM) delivers enhanced business continuity support via:
HACMP™/XD GLVM is a new, software-based technology for mirroring mission-critical data over standard TCP/IP networks. HACMP/XD GLVM, IBM's solution for geographic backup and disaster recovery for IBM pSeries® servers, supports AIX® 5L logical volumes to help keep your business running. HACMP/XD GLVM is simpler and easier to use than the existing HACMP/XD HAGEO software-based technology and is better suited to the application workloads that typically run on today's pSeries servers.
HACMP/XD GLVM helps you maintain business continuity via real-time data mirroring and automated failover/failback. That means near-instantaneous disaster recovery and availability for your mission-critical applications.
HACMP/XD GLVM exploits IP to enable one or two copies of an AIX 5L logical volume to be located at a remote site separated by unlimited distance, thus allowing for automated failover to that remote site with minimal risk of loss of any data. HACMP/XD GLVM can manage replication, synchronization, and recovery of new or existing AIX 5L logical volumes. With the new, easier-to-use interface, the complexities of managing HAGEO mirror copy synchronization are replaced by the existing LVM functions of AIX 5L.
HACMP V5 provides an excellent high availability solution for pSeries servers, providing automated failover and failback within a local site. HACMP/XD takes the business-critical function provided by HACMP V5 and extends it by adding remote data mirroring and supporting failover and failback to sites at unlimited distances.
When you include HACMP/XD, nothing can stop your business.
HACMP V5.2 on AIX 5L V5.3
April 15, 2005: With requisite AIX 5L V5.3 PTFs
The HACMP/XD product provides several high availability technologies that extend the business-critical reliability function provided by HACMP V5 to support sites that are geographically distant from each other. Previously, HACMP/XD included Peer-to-Peer Remote Copy (PPRC) and IP-based mirroring (HAGEO).
HACMP/XD Geographic Logical Volume Manager (GLVM) is a new IP-based mirroring technology. HACMP/XD GLVM data replication is built upon AIX 5L's Logical Volume Manager (LVM), using it to drive replication and synchronization of AIX logical volumes. HACMP/XD takes the business-critical function provided by HACMP V5 and extends it to support sites that are geographically distant from each other.
HACMP/XD GLVM supplements, and is intended to replace, the current HACMP/XD HAGEO IP-based mirroring function. HACMP/XD GLVM provides essentially the same function with greater usability, reliability, and performance. HACMP/XD GLVM is integrated with AIX 5L's LVM instead of being separate from it, as with current HACMP/XD HAGEO IP-based mirroring. As a result, the HACMP/XD GLVM user need not size, create, nor manage separate "state maps" as previously required with the current HACMP/XD "HAGEO" IP-based mirroring.
Because of its tight integration with LVM, the HACMP/XD GLVM user need only configure an AIX remote pseudo-device driver to define the remote physical volume; the complexities of managing HACMP/XD state maps and mirror copy synchronization are handled by the existing LVM functions of AIX 5L. The HACMP/XD GLVM user needs to configure geographically distant disks as "remote physical volumes" and then combine those remote physical volumes with local physical volumes to form "geographically mirrored volume groups," which are managed by the AIX 5L LVM just like ordinary volume groups. Users who are already familiar with HACMP and AIX 5L LVM should find HACMP/XD GLVM easy to learn.
HACMP/XD GLVM enables one or two copies of an AIX logical volume to be located at remote sites separated by unlimited remote distances, thus allowing automated failover to and failback from that remote site without loss of data.
HACMP V5 provides an excellent high availability solution for pSeries servers, providing automated failover and failback within a local site. Support for Dynamic LPARs, Capacity Upgrade on Demand (CUoD), and Capacity Backup (CBU) is included for POWER4™ and POWER5™ (APAR service required). With the addition of HACMP/XD in all its forms (Peer-to-Peer Remote Copy [PPRC], HAGEO, and GLVM), it provides customizable, easy-to-use data mirroring and availability services between PPRC sites or geographically distant sites or logical volumes connected by a standard IP-based network. The PPRC and HAGEO functions of HACMP/XD remain unchanged.
In Appendix C of the HACMP/XD for Geographic LVM Planning and Administration Guide , HACMP/XD for GLVM and HAGEO are compared in terms of mapping of their components, terminology, major functions, and configuration. Also, a migration procedure from HAGEO to HACMP/XD for GLVM is included. Customers who are currently using HAGEO and are planning a switch to HACMP/XD for GLVM should refer to this guide.
For a complete description of IBM high availability solutions and products, and the many ways that these products can help protect your business, go to
Note: For current HAGEO customers, note the following and refer to the for additional information:
IBM Global Financing: IBM Global Financing offers competitive financing to credit-qualified customers to assist them in acquiring IT solutions. Offerings include financing for IT acquisition, including hardware, software, and services, both from IBM and other manufacturers or vendors. Offerings (for all customer segments: small, medium, and large enterprise), rates, terms, and availability can vary by country. Contact your local IBM Global Financing organization or visit
IBM Global Financing offerings are provided through IBM Credit LLC in the United States and other IBM subsidiaries and divisions worldwide to qualified commercial and government customers. Rates are based on a customer's credit rating, financing terms, offering type, equipment type and options, and may vary by country. Other restrictions may apply. Rates and offerings are subject to change, extension, or withdrawal without notice.
The prospective customer for HACMP/XD solutions is any enterprise or organization with requirements to keep business-critical applications and systems operational 7 days per week, 24 hours per day. An HACMP solution provides the means to recover from any unplanned server hardware or application failures, and also gives you the means to take down an individual server (node) for planned maintenance and upgrades without having to take down the entire cluster.
High availability and business continuity is a growing business need across all industries. HACMP and HACMP/XD are designed to help protect you from loss of data or services during planned or unplanned outages. The following industries are prime candidates and opportunities for HACMP solutions:
The HACMP/XD feature is a must for clients with business-critical data who want to mirror data between separate sites to enable and automate cross-site disaster recovery and failover. This applies to businesses of any size, with multiple sites or regional operations, or wherever decentralization of data is desired. HACMP/XD is an attractive, affordable high availability solution for small and medium-sized enterprises, and for small and medium-sized business units of large enterprises. High availability should be a fundamental buying criterion for business-critical and on demand applications.
In addition to providing high availability, HACMP can also be configured to provide loosely coupled multiprocessing services. These configurations allow workloads to be spread across multiple pSeries systems, sharing the disk and processor resources of the clustered nodes. This clustered approach, along with the capability of application failover and recovery/restart of the HACMP V5 configured machine, offers additional levels of high availability processing for customer-critical environments. The Concurrent Resource Manager function of HACMP provides an open API that applications can utilize to get concurrent access to a shared disk.
Positioning of HACMP relative to other cluster servers: HACMP is a robust offering for mission-critical availability for up to 32 nodes. It is IBM's strategic high availability offering designed and tuned for pSeries servers running AIX 5L.
Advantages of HACMP relative to competitive products:
Positioning of HACMP/XD relative to other data mirroring or disaster recovery solutions: HACMP/XD is a robust offering for mission-critical availability for up to 32 nodes. It is IBM's strategic business continuity offering designed and tuned for pSeries servers running AIX 5L.
Advantages of HACMP/XD relative to competitive products:
To enable HACMP/XD GLVM as the strategic replacement for IBM HAGEO, IBM intends to enhance HACMP/XD GLVM with the following functions by third quarter 2006:
All statements regarding IBM's plans, directions, and intent are subject to change or withdrawal without notice.
For complete information and description of HACMP V5 and HACMP/XD, refer to Software Announcement , dated June 22, 2004.
If you are a Direct Reseller - System Reseller acquiring products from IBM, you may link directly to Business Partner information for this announcement. A PartnerWorld ID and password are required (use IBM ID).
Trademarks
The GLVM function is included with the latest level of 5765-F62 HACMP™/XD.
New customers need to order the 5765-F62 HACMP/XD optional billing feature number 0003 and 5692-A5L SPO media feature number 0997. Contact your IBM representative for the full range of billing options.
Existing customers need only to reorder 5692-A5L SPO media feature number 0997.
Customized offerings: Most product media is shipped only via customized offerings (that is, CBPDO, ServerPac, and SystemPac®). Non-customized items (CDs, diskettes, source media, and media kits) will continue to be shipped via the stand-alone product.
Trademarks
