Preparing for Open Disk Technology

In the near future, systems will use open disk technology based on 512-byte physical sectors (contrasted with the current 180-byte sector technology).

You can use open disk technology without making changes to existing Enterprise Database Server databases. However, optimal performance with the new technology is based on block size and table size values being a multiple of 60 words or an even number of 180-byte logical sectors.

Adjust block size and table size values at the earliest opportunity, for example, when you add or reorganize a structure. Examples of recommended values are

Block Size

Table Size

10 segments

2 segments

300 words

60 words

1800 bytes

Specifying a block size in terms of number of records or entries is not recommended because the block size is rounded a maximum of 30 words, rather than 60 words.

It is recommended that you follow the preceding guidelines for block and table size values when migrating to XE structures. The structures will then be ready to benefit from the open disk technology without requiring a structural reorganization.
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