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IBM System Storage DS8000 Technical Solutions V3 Sample Questions:

1. A customer has an existing D68800 which is installed in their data center. It now must have an extra frame added to support additional capacity growth, but there is no room to fit the expansion frame to the right.
Which option should be taken?

A) Fit the expansion frame to the left of the base frame
B) Create an MES to replace all of the existing capacity with larger drives which support both the existing workload and the planned increase
C) Disruptively relocate the D68800 to make space to the right of the base frame for the expansion frame
D) Configure the expansion frame with the DS8000 Passthrough feature to allow placement of the frame anywhere

2. A D38870 administrator would access the GUI using:

A) Only the HMC
B) The POWER7 controller
C) A thick client
D) A browser

3. A potential DS8870 customer knows that RAID 5 works much faster and is more capacity-efficient than RAID 6, but they fear for double disk failures due to high rebuild times at large disk sizes.
How should the technical specialist address this concern?

A) Explain RAID 6 is the only applicable solution.
B) Discuss the DSS000 Smart Rebuild function with the customer.
C) Discuss how additional hot spares can be configured per device adapter pair.
D) Suggest configuring large storage pools with multiple RAID 5 arrays.

4. A customer requires an infrastructure to support disaster recovery of critical applications between two remote data centers. One data center is in Tokyo and one is in Beijing. The customer's Recovery Point Objective (RPO) requires a six-hour window for a bandwidth of 100 MB/s and a new storage system for a total of 4 TB of data. They estimate 100 MB of new data produced hourly.
What data synchronization method would be recommended to meet the requirements?

A) FlashCopy
B) Snapshot
C) Global Mirror
D) Metro Mirror

5. A customer wants to place some HDDs in a DS8870. The customer also wants to enable Easy Tier with SSD for all HDDs, but wants to minimize the amount of SSDs purchased.
Which option would be valid?

A) SSDs come in half drive sets (8 drives). Purchasing a single half drive set, if configured properly, would enable all the HDDs to be in an Easy Tier pool at the lowest cost.
B) IBM recommends a 2:1 ratio of HDDs to SSDs, so the customer should purchase half the number of SSDs compared to the number of HDDs purchased.
C) SDDs come in full drive sets (16 drives). Purchasing a single full drive set, if configured properly, would enable all the HDDs to be in an Easy Tier pool at the lowest cost.
D) IBM never recommends less than 50% of the configured drives be SSD, so the customer should match the number of HDDs with the same number of SSDs.

Solutions: