IBM System Storage DS8000 Technical Solutions V3 Set 1

1.

Which function is unique to the DS8000 within the following IBM disk storage products: DS8000, XIV, Storwize V7000?

Native encryption Support for SSDs Support for large form factor drives Support for native Fibre Channel connections

2.

Which tool can a customer use without assistance to determine whether a mixture of different disk types, in conjunction with Easy Tier, could improve performance on a DS8000?

Disk Magic Capacity Magic Pre-Sales Advisor Storage Tier Advisor

3.

Which of the following statements about remote replication on the D38000 is true?

Global Copy does not provide consistency Global Mirror has a maximum of 256 volumes Metro Mirror's longest supported distance is 100 kilometers Metro/Global Mirror can only be used for z/OS data

4.

Which of the following statements regarding the DSS000 Metro Mirror consistency group function is true?

Metro Mirror consistency groups are not required to maintain data consistency across devices in a disaster
situation. Simply enabling the Metro Mirror consistency group function on a PPRC path will provide consistency for alldevices in this LSS. The consistency group functionality requires external automation such as Tivoli Storage Productivity CenterV5.x or GDPS to work correctly. A Metro Mirror consistency group must be contained within a single primary disk subsystem.

5.

What is the standard topology for volume relationships in a DS8000 Global Mirror environment?

Volume 1 is in a Global Mirror relationship with Volume 2. Volume 1 is in a Global Copy relationship with Volume 2. Volume 2 is in a FlashCopy relationship withVolume 3. Volume 1 and Volume 2 are also defined in the Global Mirror session. Volume 1 is in a Global Copy relationship with Volume 2. Volume 2 is in a FlashCopy relationship withVolume 3. Volume 1 is also defined in a Global Mirror session. Volume 1 is in a Metro Mirror relationship with Volume 2. Volume 2 is in a FlashCopy relationship withVolume 3.

6.

Which of the following is true regarding Extent Pools on a D38000?

A Fixed Block LUN can span multiple Extent Pools. A Fixed Block LUN can have extents from separate ranks within the same Extent Pool. A Count Key Data Volume can span multiple Extent Pools. A Count Key Data Volume cannot have extents from separate ranks within the same Extent Pool.

7.

When I/O Priority Manager is enabled, each volume in a D38800 is assigned to a performance group at the time of the volume creation. What action will the DS8800 take to ensure that the most important volumes as defined to I/O Priority Manager receive the highest level of system resources available?

delay I/Os with lower performance policies invoke Easy Tier for higher performance policy I/Os move volumes with higher performance policy I/Os to faster disks or SSDS allocate additional cache for volumes with higher performance policies

8.

What statement is correct regarding DS8870 Remote Pair FlashCopy?

D38700 Remote PairFlashCopyis initiated using IP network links between the data centers. Using DS8870 Remote PairFlashCopydoes not require any existing Metro Mirror license. With DS8870 Remote Pair FlashCopy, the local FlashCopy target is a Metro Mirror source. DS8870 Remote Pair FlashCopy is a separate feature code, which must be included on the system order.

9.

A potential DS8OIJO customer would like to understand the size of the non-volatile storage (NVS) as compared to the overall size of the DS8000 processor memory. Which technical feedback to the customer is correct?

NVS size is 4 GB for all cache sizes up to 64 GB. and 16 GB for all overall cache sizes over 64 GB NVS size is a part of the SARC algorithm and adapts automatically depending on the actual workload of thecustomer NVS size can be adjusted according to customer demand using the CLI NVS size is 1/32 scale (in minimum 1 GB) of the overall processor memory

10.

As the result of a performance sizing a D38870 system configuration must include 96 x 600 GB 10000 rpm SAS drives, and only 32 GB cache. Which DS8870 system version should to be offered?

DS8870 business class configuration including 4 core processors DS8870 enterprise class configuration including 2 core processors DS8870 enterprise class configuration including 4 core processors DS8870 business class configuration including 2 core processors

IBM System Storage DS8000 Technical Solutions V3 Set 1

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IBM System Storage DS8000 Technical Solutions V3 Set 1

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