Chapter 11: Storage and File Structure. Hankz Hankui Zhuo. What factors we care about. Speed Cost Reliability data loss: power failure, or system crash physical failure. Classification of Physical Storage Media. volatile storage loses contents when power is switched off
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2. If the block is not in the buffer, the buffer manager allocates space in the buffer for the block
A. Replacing (throwing out) some other block, if required, to make space for the new block.
B. Replaced block written back to disk only if it was modified since the most recent time that it was written to/fetched from the disk.
to i, . . . , m – 1, or
record in an overflow block
must be updated