Which four are recommendations for optimizing library performance for an SL8500?
A.
Install redundant robotics.
B.
Enter sufficient scratch cartridges to each rail.
C.
Use ExLM with ACSLS.
D.
Install tape drives that use the same media types on the same rails.
E.
Use the float option.
Explanation:
A: Redundant Robotics
A single SL8500 rail section can accommodate two robots, for a total of eight robots per library.
These robots can operate in parallel, significantly increasing the overall performance of the library.
B: When populating the rails:
Scratch cartridge pools: make sure the rails have enough scratch cartridges
D: When populating the rails:
Media types: make sure the rails have compatible cartridges for the tape drives
Note: Ways tape drives can enhance performance of the library are by:
•Placing tape drives in the outer tape drive columns to minimize dual robotic contention.•Grouping tape drives by type on the same LSM.
•Keeping compatible media and drives on the same LSM.
•Allocating LSMs to support specific application workloads.
•Maintaining free cells on each LSM to support dismounts using the float option.
E: Cartridge Float
Both ACSLS and HSC have cartridge float enabled by default.
*Cartridge float is a feature that allows ACSLS or HSC to place a dismounted tape cartridge in an
empty slot in the same LSM as or a closer LSM to the tape drive if the tape originally came from a
different LSM using a pass-thru operation.
*This feature minimizes elevator and pass-thru port activity by not requiring the cartridge to be
returned to its original slot in another rail or library.
Warning – Turning the default Float option OFF can have serious consequences for overall library
performance. In both ACSLS and HSC, turning Float OFF can greatly increase the total robotics
activity to unacceptable levels.