IBM XIV Storage System Technical Solutions V4 - C4090-456 Exam Questions [2026]

QUESTION NO: 1
Compared to other IBM storage offerings, which of the following is unique functionality on an XIV system?

A. reduced single points of failure B. prevents hotspots C. ability to take snapshots D. IP based replication

Correct Answer: B

QUESTION NO: 2
A TELCO customer has an application that generates intensive small block random reads. The customer installed one XIV Gen3 system and is dissatisfied with this choice. They have enough performance on writes and sufficient capacity.
In order to consolidate more applications what should the technical specialist advise?

A. use external storage with FC drives and virtualize it under XIV B. request IBM to change the nearline SAS drives with SAS 10k drives C. order an extra frame with SAS 15k drives D. orderthe SSD option and use itin conjunction with Q0S

Correct Answer: D

QUESTION NO: 3
Which is the correct method to access the XIV Multi-system Manager (MSM)?

A. Remote Desktop (RDP) session to the MSM B. XIV GUI to the MSM using server mode C. VMware vOenter console to the MSM D. Puttysession to the MSM P address

Correct Answer: B

QUESTION NO: 4
When creating a thin provisioned volume on an XIV the maximum capacity is limited by:

A. the softcapacityof the storage pool where the volume resides B. the hard capacity of the storage pool where the volume resides C. the vol_size_max configuration parameter D. the availablecapacityin the XIV system

Correct Answer: A

QUESTION NO: 5
A customer complains that their SAP database now performs worse than it did before being migrated from traditional RAID storage to XIV. The database was configured using 20 x 200GB XIV LUNs presented to an AIX 6 host OS where they are concatenated and striped into six volumes for the databases and logs. No changes have been made in the transition to XIV.
What if anything can be done to improve performance?

A. add Fibre Channel adapters to the host and balance volumes across the adapters B. the databases should be reorganized into larger volumes on the XIV and not striped within the OS C. implement static load balancing and increase the queue depth of the host adapters D. the SAP volumes should be put into a QoS Performance Class

Correct Answer: B

QUESTION NO: 6
Which XIV system feature increases the level of reliability of the system?

A. solid state drives B. protected cache C. snapshots D. Quality of Service

Correct Answer: B

QUESTION NO: 7
A customer wants to ensure resource availability for their SAP application by implementing Q0S. How could the performance class be defined?

A. limited to 10,000 IOPS and add the SAP application servers to it B. for half of the interface modules add all hosts, with the remaining modules serving the SAP application C. for half of the interface modules add the SAP application, with the remaining modules serving all other I/O D. limited to 10,000 IOPS and add all hosts except the SAP application to it

Correct Answer: D