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IBM C4090-456 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| XIV Hardware Architecture | 25% | - Gen1 / Gen2 / Gen3 differences - Reliability and serviceability - System components and modules |
| XIV Software & Features | 30% | - Snapshots and consistency groups - GUI and CLI management - Thin provisioning - Remote mirroring (sync/async) |
| Capacity & Performance Design | 15% | - Performance optimization - Capacity on Demand - Workload sizing and best practices |
| XIV Storage System Overview | 20% | - Architecture and business value - Competitive advantages |
| Interoperability & Migration | 10% | - Host connectivity - Data migration methods - Virtualization integration |
IBM XIV Storage System Technical Solutions V4 Sample Questions:
1. On XIV what factors are important to successfully implement asynchronous mirroring?
A) latency between the remote and local XIV, number of volumes must be less than 256
B) each mirror must have the same RPO and sync interval within the same storage pool
C) data change rate, available bandwidth and interval
D) data change rate, number of volumes less than 256, required RPO
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) orderthe SSD option and use itin conjunction with Q0S
B) order an extra frame with SAS 15k drives
C) use external storage with FC drives and virtualize it under XIV
D) request IBM to change the nearline SAS drives with SAS 10k drives
3. Which statement is true when comparing an XIV Model 214 to Model 114?
A) Model 214 supports more HDDs in a fully configured system.
B) Model 214 supports ECoFconnectivityover dedicated ports.
C) Model 214 adds aniSCSI 10Gb/s configuration option.
D) Model 214 adds SSD caching functionality.
4. What is the maximum period of time the XIV system stores detailed host and volume data?
A) 90days
B) forever
C) 30days
D) 365days
5. A customer has requested a highly available solution with fully concurrent fail over for a VMware farm of hosts. The customer also has Oracle databases that demand very low latency (0.5 ms and lower). What would be the best solution for this environment?
A) Two XIV systems setup in asynchronous mirror with SSDs and VMware SRM
B) SVC stretch clusterwith XIV and IBM FlashSystems (RamSan), plus enable EasyTier
C) SVC with XIV and IBM FlashSystems (RamSan), plus enable Easy Tier
D) Two XIV systems setup in synchronous mirrorwith SSD5 and VMware SRM
Solutions:
| Question # 1 Answer: C | Question # 2 Answer: A | Question # 3 Answer: C | Question # 4 Answer: C | Question # 5 Answer: B |







