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IBM N Series Hardware Guide

IBM N Series
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158 IBM System Storage N series Hardware Guide
As noted earlier, the white diagonal stripe is not stored, and no other diagonal blocks can be
re-creating on the existing chain. RAID-DP continues to search for a new chain to start
re-creating diagonal blocks. In this example, the procedure determines that it can re-create
missing data in the gold stripe, as shown in Figure 10-15.
Figure 10-15 RAID-DP reconstruction simulation of second horizontal block
After RAID-DP re-creates a missing diagonal block, the process again switches to re-creating
a missing horizontal block from row parity. When the missing diagonal block in the gold stripe
is re-created, enough information is available to re-create the missing horizontal block from
row parity, as shown in Figure 10-16.
Figure 10-16 RAID-DP reconstruction simulation of gold horizontal block

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IBM N Series Specifications

General IconGeneral
BrandIBM
ModelN Series
CategoryStorage
LanguageEnglish

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