Name: ______________________________________
- Mark devices as (S)hared, (D)edicated or (V)irtual.
- ___ Keyboard in Windows (from a user's point of view).
- ___ RAID disk array.
- ___ Scanner
- ___ Memory Stick
- ___ Laser printer
- Write the level of RAID (0, 1, 3, 5) most appropriate for these
cases. If two or more levels are appropriate, use the lowest level.
- ___ Need only the capacity of one disk, but need full availability of
data even if a disk fails.
- ___ High availability is not a concern, but speed, especially of
intensive writing is a priority.
- ___ The application requires 3 disks capacity of data and needs
recovery if any disk fails. The data is created monthly. The
requirement is for speed during the read operations taking place
online every day.
- ___ The application requires 5 disks capacity of data and needs
recovery if any disk fails. There is intensive read and write
activity online. Speed should not be sacrificed to recoverability.
- When a Java program uses the RandomAccessFile.seek() method,
will DM definitely do a hardware seek? ____
Why or why not? _____________________________________-
- With RAID-0, using 40 Gig disks, how many disks must the array have
to store 120 Gig of data? ___________
- With RAID-1, using 40 Gig disks, how many disks must the array have
to store 120 Gig of data? ___________
- With RAID-3, using 40 Gig disks, how many disks must the array have
to store 120 Gig of data? ___________
- We have a server with multiple disks. There is one 500,000 byte file
which is accessed VERY heavily. What strategy can you think of to
absolutely minimize the seek time to this file?
__________________________________________________________________
- If a disk rotates 5000 RPM (rotations per minute), what is the
average rotational delay? _______________________