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A new Disaster Recovery site has been established using Metro Mirror to hold synchronous data at both sites. After the Metro Mirror is started， one of the most important applications， a DB2 database， slows down. An analysis shows that the I/O rate （especially write I/Os） is less than 40% compared to the former rates. What is the best explanation for this behavior（）
- A、the bandwidth of the PPRC connection between the two sites is too small
- B、the DS8000 SFI at the remote site was shipped with slower disks
- C、I/O rates vary， depending on the distance between the two sites and the rates cannot be changed easily， due to latency
- D、the DB2 database does not work with Metro Mirror without an additional license
参考答案
更多 “ A new Disaster Recovery site has been established using Metro Mirror to hold synchronous data at both sites. After the Metro Mirror is started， one of the most important applications， a DB2 database， slows down. An analysis shows that the I/O rate （especially write I/Os） is less than 40% compared to the former rates. What is the best explanation for this behavior（）A、the bandwidth of the PPRC connection between the two sites is too smallB、the DS8000 SFI at the remote site was shipped with slower disksC、I/O rates vary， depending on the distance between the two sites and the rates cannot be changed easily， due to latencyD、the DB2 database does not work with Metro Mirror without an additional license” 相关考题
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单选题A financial customer has three data centers that are approximately five kilometers apart. Their SAP application data needs to be kept synchronized within 10 milliseconds between the three sites. Which of the following solutions satisfies the customer's recovery time objective?（）A
DS8700 systems at each site running Metro MirrorB
DS5300 systems at each site running Metro MirrorC
DS5100 systems at each site running Global MirrorD
XIV systems at each site running synchronous mirroring
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单选题A customer needs a remote data copy， data migration， and off-site backup solution. The solution cannot impact application performance. The sites are over continental distances. Which characteristic of DS8700 Global Mirror makes it a good fit for this customer（）A
it provides synchronous mirroring on both sidesB
it can be implemented withoutFlashCopy volumes at the target siteC
with Global Mirror， the Metro Mirror functions can be used over continental distancesD
it has almost no impact on application performance because of its extremely short and adjustable coordination time
考题
单选题A new Disaster Recovery site has been established using Metro Mirror to hold synchronous data at both sites. After the Metro Mirror is started， one of the most important applications， a DB2 database， slows down. An analysis shows that the I/O rate （especially write I/Os） is less than 40% compared to the former rates. What is the best explanation for this behavior（）A
the bandwidth of the PPRC connection between the two sites is too smallB
the DS8000 SFI at the remote site was shipped with slower disksC
I/O rates vary， depending on the distance between the two sites and the rates cannot be changed easily， due to latencyD
the DB2 database does not work with Metro Mirror without an additional license
考题
单选题A customer has two data centers， 500 kilometers apart. The customer requests a proposal for new storage subsystems and a disaster recovery solution that provides consistent data in the event of a disaster at the local site. Which IBM System Storage DS8000 solution should the storage specialist propose to the client（）A
Metro/Global MirrorB
Metro MirrorC
Global CopyD
Global Mirror
考题
单选题A company with three sites （one local production site， one intermediate site， and one remote site） wants to use Metro/Global Mirror. Which statement is correct about the volumes at the intermediate site（）A
the intermediate site volumes are Metro Mirror target volumes for the remote siteB
the intermediate site volumes are Global Mirror target volumes for the remote siteC
the intermediate site volumes are both Global Mirror source and Metro Mirror target at the same timeD
the intermediate site volumes are alsoFlashCopy sources for the remote site
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