You are evaluating storage system performance for an interactive workload. What are three appropriate criteria in this situation? (Choose three.)
Acustomer requirements
Bthroughput (MBs)
Celapsed time
Dstorage system response time
Eresource utilization (% busy)
A 10K RPM Small Form Factor 600 GB disk drive has a 3 ms average rotational latency and a 4 ms average seek time. How many random read IOPS would you expect from a 4D+4D RAID group using these drives before any consideration for cache hits or queuing optimization benefits?
Aapproximately 570 IOPS
Bapproximately 1,140 IOPS
Capproximately 1,530 IOPS
Dapproximately 2,280 IOPS
Which two environments are suitable for cost effective use of Hitachi Accelerated Flash disk media? (Choose two.)
AOnline Analytical Processing (OLAP) data warehouse
BOnline Transaction Processing (OLTP) with HDT
Clarge scale Consumer Video on Demand (CVOD)
DVirtual Desktop (VDI)
How many back-end disk operations are normally required to complete a small block random write operation to a LUN on a RAID 5 group?
A2
B3
C4
D6
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In a VSP G200 system, what are two advantages of RAID 1+0 compared to RAID 5/6 for random write workloads? (Choose two.)
ARAID 1+0 provides more useable capacity per for the same number of drives.
BRAID 1+0 has less processing overhead.
CDisk virtualization is lower.
DRAID 1+0 has more efficient pre-fetch operation.
Which three functions are performed by a VSP G1000 Virtual Storage Director (VSD)? (Choose three.)
AIt executes host I/O requests.
BIt calculates parity.
CIt manages cache segment usage.
DIt moves data to/from cache.
EIt executes software such as HDP or copy products.
Which two statements are true about the Active Flash feature on the VSP Midrange? (Choose two.)
AThe Active Flash feature of Hitachi Dynamic Tiering monitors page access frequency in real-time, and immediately promotes pages that suddenly become busy.
BThe Active Flash feature can be enabled on any HDT pool as long as Tier 1 of the Dynamic Tiering pool is composed of SSD or FMD drives.
CThe Active Flash feature can be enabled on any HDP pool as long as the pool is comprised of SSD or FMD drives.
DThe Active Flash feature of Hitachi Dynamic Tiering monitors page access frequency in real-time, and promotes pages based on a predefined schedule.
Which two port options are bi-directional on a VSP G800? (Choose two.)
AReplication-Target (RCU)
BOpen Target (TAR)
CExternal Target (eLUN)
DMainframe (FICON)
On a VSP G1000, the maximum I/O Request Limit for an external initiator port has been exceeded. What are two consequences of this activity? (Choose two.)
ANew writes will back up into the VSP G1000 cache.
BThe host will see rapidly rising response times per request.
CThe host will see a minor change in response times.
DThe host will not be able to process new I/O requests.
You are partitioning a VSP G1000 with eight VSDs and 1024 GB cache, and are creating an 80 GB CLPR.
In this scenario, how much cache does each VSD blade initially reference in the CLPR?
A10 GB
B80 GB
C640 GB
D1024 GB
You are sizing a VSP G4000 for a customer who requires good performance but has a very limited budget. You now must select a cache size between 64 GB and 128 GB.
Which three conditions will affect your selection in this situation? (Choose three.)
AThe customer plans to use Cache Logical Partitions (CLPRs)
BThe customer environment is mainly VMware.
CThe number of LDEVs that are available.
DThe customer will use ShadowImage.
EThe number of connected hosts.
A customer using a small block interactive workload on a VSP G200 complains about poor application performance. They use an FC SAN which consists of 8 Gbps and 16 Gbps FC switches.
What are two causes of the performance issue? (Choose two.)
AFront-end ports of the VSP G200 are connected to the 8 Gbps FC switch.
BThe front-end FC ports are used by another bandwidth-intensive application.
CThe host HBA has an insufficient queue depth setting.
DThe multi-pathing software uses round robin balancing algorithm.
You are designing a VSP G1000 solution for a customer and you need to determine the appropriate disk type and RAID level. What information do you need to design the solution? (Choose three.)
Atype of workloads
Bworkloads read-write ratio
Coperating systems used in the environment
Dfan-in and fan-out ratios
Eexpected I/O rates
A customer is considering buying a new VSP Midrange system with iSCSI front-ends. The system will be used to support existing Oracle databases and a new MS Exchange mail system. The existing customer’s LAN has enough resources to handle the iSCSI traffic. They have provided the required storage for Oracle and MS Exchange.
What I/O profile information is required to size the VSP system in this scenario? (Choose two.)
Atransactions per second collected from the Oracle databases
Bthe planned amount of MS Exchange mailboxes and IOPS per user
Cthe planned amount of e-mails per second the MS Exchange system will send and receive
DIOPS and R/W ratio collected from the Oracle databases
Which two statements are true regarding HDP pools? (Choose two.)
AUsing the largest possible pools is a recommended practice.
BExposure to failure and recovery from failure must be considered when recommending the maximum size of a pool.
CHDP pools can be used for sizing HDT pools.
DTier migration is based on performance and space capacity.
A VSP G800 HDT pool contains FMDs, NL-SAS drives, external storage with 15K 600 GB SAS drives, and external storage with 10K 900 GB SAS drives.
Which tier level contains the NL-SAS drives in this configuration?
A1
B2
C3
D4
A customer plans to migrate an interactive application from a VSP to VSP G1000. The application has consistent access across all its capacity with low hit rates and no particularly high I/O access areas. The application latency must be less or equal to 1.5 ms.
Which configuration do you recommend to satisfy the requirements?
Aan HDT pool consisting of SAS 10K and FMD drives
Ban HDP pool with FMD drives
Can HDP pool consisting of NL-SAS and FMD drives
Dan HDP pool consisting of external LDEVs provisioned on a VSP F400 system
A customer has several Oracle databases with different workload profiles residing on old HUS systems. The customer wants to consolidate workloads on a new VSP G800 system to increase database performance and to reduce costs. Which configuration would you use to accomplish this task?
APut all of the databases in a single HDT pool.
BPut each database in its own HDT pool.
CPut databases with the same workload profile together in their own HDT pool.
DPut all database tablespaces and indexes in the first HDT pool, all redo logs in the second HDT pool, and all undo logs in a third HDT pool.
Your VSP G1000 customer has an HDP pool with 600 GB drives and they need more IOPS in the pool. Which action will satisfy the requirement?
ASpread the pool over storage tiers.
BAdd 1.2 TB drives to the pool.
CAdd more 600 Gb drives of the same type.
DCreate a new HDP pool.
Your customer has an HDP pool dedicated to interactive production workloads. Which two applications are good candidates to share this HDP pool? (Choose two.)
Acustomer relationship management
Bcustomer service call taking and dispatch
Csoftware development
Dbackup repository
Response times in an HDP pool have been increasing consistently with each additional workload during a large scale migration. The response times may become unacceptable with subsequent migrations. The purchase of additional equipment is an acceptable solution. What are two valid actions in this scenario? (Choose two.)
AIncrease the pool free space and alert thresholds to the maximum permitted levels.
BExpand the pool with volumes from new parity groups to reduce utilization levels.
CApply the SOM to provide tier property information that assesses suitability for HDT and deployment of flash.
DUse more, smaller, pool LDEVs per parity group to improve the efficiency and utilization of the queues.
A VSP G800 customer has one HDT pool with three tiers and they report a high frequency of relocations up and down between Tier 1 and Tier 2, affecting the HDT pool performance.
Which two actions will help solve the issue? (Choose two.)
ADecrease the monitoring period of the HDT pool.
BIncrease the size of the grey zone between Tier 1 and Tier 2.
CChange the HDT pool setting from Period mode to Continuous mode.
DIncrease the size of Tier 2.
Immediately after migrating to a new HDT pool, Hitachi Tuning Manager shows that Tier 1 SSD, Tier 2 SAS, and Tier 3 NL-SAS are not busy for performance but Tier 1 and Tier 2 are over utilized for capacity. From this analysis, which action should be performed?
ARe-asses after HDT performs page migration cycles.
