StorageTek Tape Libraries Essentials
Question No: 11
Which three rules apply when the SL3000 library controller automatically adds cells to active storage regions?
Cell activation startsinthe left upper rear of the active storage region and moves to the
right lower front
Cell activation starts with the cells closest to the drives and moves out equally from right to left and top to bottom
All cells within a column are activated from top to bottom before moving to the next column
Columns within a panel are activated from left to right
Explanation: Cell Activation Rules
The library controller uses the following rules when adding cells to active storage regions:
Cell activation starts in the left upper rear of the active storage region and moves to the right lower front.
All cells within a column are activated from top to bottom before moving to the next column.
Columns within a panel are activated from left to right.
Reference: StorageTek SL3000 Modular Library System, User’s Guide, Cell Activation Rules
Question No: 12
Which three growth features can be installed nondisruptively to the SL8500?
Capacity on Demand
Pass thru Ports
Cartridge Expansion Frames
Explanation: A: The SL3000 library includes RealTimeGrowth and Capacity on Demand features.
Installation of additional activated capacity results in minimal disruption to library operations. Once verified by the library controller, the additional storage cells are available immediately. You do not need to reboot the library.
B: RealTime Growth capability
The capability to add pass-thru ports dynamically while the library is operating.
Reference: StorageTek StreamLine SL8500, modular library system, User#39;s Guide
Question No: 13
Which three are benefits of StorageTek#39;s centerline architecture in the SL3000?
Fewer AC power drops
Balanced floors pace utilization
Explanation: The SL3000 modular design uses CenterLine technology to help balance the work load and improve the performance of the library. The left side of the base module serves as the centerline. You can add other modules to the left and right of the base module.
B: The SL3000’s unique Centerline Architecture cuts robot travel time by one-third to one-half, and alleviates dual robot contention to improve cartridge-to-drive performance by up to 50%.
C: Reduce footprint and power consumption while improving performance up to 50 percent with Centerline Architecture, which places the drive bays in the middle of the library
Question No: 14
Which action is not likely to improve the performance of the SL3000?
Implementing dual robots will usually give the biggest performance increase.
Configure your SL3000 as symmetrically as possible.
At dismount, always place the cartridge back in the storage cell it was moved from.
If you do not have a large number of drives, place them in alternating columns where possible
Try to place frequently used cartridges near the drives.
Reference: StorageTek SL3000 Modular Library System, User’s Guide
Question No: 15
When planning for partitioning the SL8500, which is NOT an assessment question?
How many partitions will there be in the library?
Is this a new or existing installation?
How many cartridges, free slots, and tape drives are needed for each partition?
How many CAP slots are needed for each partition?
Explanation: All HandBots and CAPs in the library are shared resources which cannot be assigned
exclusively to one partition.
Question No: 16
Which feature contributes most to improved performance and higher library availability with the SL8500?
Redundant Control Cards
Question No: 17
Which three scenarios would be more optimal for logical partitioning than physical partitioning?
Customer would like to partition an SL8500 complex into smaller partitions.
Customer would like to partition an SL8500 or an SL3000 into more partitions than physical partitioning allows.
Customer would like to partition an SL3000 into two partitions, one for mainframe and one for open systems.
Customer would prefer multiple partitions to be controlled by VOLSER than physical address.
Question No: 18
When mapping tape application workloads to the SL8500 rails, a maximum of one workload assigned to each rail.
Explanation: The SL8500 is not just another library. Each SL8500 has four separate rails or Library
Storage Modules (LSMs) that work together in parallel.
There can also be two robots
operating concurrently on each rail. This architecture offers extremely flexible and scalable configurations that can simplify automated tape applications.
Instead of distributing cartridges and tape drives evenly across all the rails, look at it from a business perspective and logically configure each individual rail to meet your specific needs and business requirements. Allocate separate tape application workloads to specific LSMs (rails).
Reference: StorageTek SL8500 Modular Library System, Best Practises, Configuring the Library for Performance
Question No: 19
On the SL3000, if you convert two Cartridge Expansion Modules to two Parking Expansion
Modules, how many slots will you lose?
Explanation: The optional Cartridge Expansion Module (CEM) provides additional storage cell capacity and growth for cartridges only.
Each CEM adds up to 620 data cartridge physical storage cells.
Note: The optional Parking Expansion Modules (PEMs) provide additional storage cell capacity and growth, as well as space for a redundant TallBot to be “parked.” The parking space makes the three outer-most columns of storage cells on the front and rear walls inaccessible. The inaccessible cells can be left out of the module, or they can be installed to allow later conversion of the PEM to a CEM. PEMs do not include tape drives.
PEMs are only used with the Dual Robotics feature, and they are always installed in pairs. They must be the last modules on the right and left sides of the library series.
Question No: 20
What ACSLS command would you use to enter a volser (WHY200) into the library with manual caps?
Enter WHY200 0, 0, 0
Set cap auto WHY200
Unlock cap 0, 0, 0
Enter 0, 0, 0
Answer: B Explanation:
Note: volume serial number (volser) A synonym for external label identifier.
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