87:. Global mirror periodically pauses updates of the primary volumes and swaps change recording bitmaps. It then uses the previous bitmap to drain updates from the primary volumes to the secondaries. After all primary updates have been drained, the secondary volumes are used as the source for a FlashCopy to tertiary volumes at the recovery site. This ensures that the tertiary copy of the volumes has point-in-time consistency. By grouping many volumes into one Global Mirror session multiple volumes may be copied to the recovery site simultaneously while maintaining point-in-time consistency across those volumes.
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57:(RPO) of as low as 3–5 seconds between the two sites at extended distances with no performance impact on the application at the primary site. It replicates the data
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and also forms a consistency group at a regular interval allowing a clean recovery of the application.
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to provide for automated failover between sites. This combined solution provides lower
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Models 800 and 750, midrange storage servers V7000, DS4000 family, and the
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The two sites can be on separate continents or simply on different
203:"GDPS Family - An Introduction to Concepts and Capabilities"
121:(DS8100, DS8300, DS8700, DS8800, DS8870), the DS6800, the
68:. IBM also provides a synchronous data replication called
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IBM TotalStorage
Continuous Availability for Windows
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41:over extended distances between two sites for
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113:The Global Mirror function is available on
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96:Geographically Dispersed Parallel Sysplex
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176:: CS1 maint: archived copy as title (
214:. IBM. March 30, 2011. Archived from
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75:Global Mirror is based on IBM
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264:. You can help Knowledge by
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191:DS8000 Information Center
127:IBM SAN Volume Controller
123:Enterprise Storage Server
37:technology that provides
94:clustering product like
55:recovery point objective
108:recovery time objective
27:Data replication system
321:Storage software stubs
117:devices including the
254:computer data storage
316:IBM storage software
43:business continuity
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221:on April 10, 2011
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47:disaster recovery
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77:Copy Services
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31:Global Mirror
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18:Global Mirror
266:expanding it
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223:. Retrieved
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161:. Retrieved
154:the original
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70:Metro Mirror
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115:IBM Storage
81:Global Copy
79:functions:
305:Categories
163:2010-10-04
133:References
256:-related
85:FlashCopy
51:bandwidth
258:software
225:July 18,
172:cite web
100:HACMP/XD
98:(GDPS),
33:is an
252:This
219:(PDF)
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227:2013
178:link
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