Item
Description
Description
Data is written to multiple disks successively in units of block (or blocks). Parity
data is generated from data of multiple blocks and written to disk.
Advantage
RAID 5 is well suited to support transaction operations that mainly use small
size random access because each disk can receive I/O instructions
independently. It can provide high reliability and usability at a comparatively low
cost by virtue of the parity data.
Disadvantage
Write penalty of RAID 5 is larger than that of RAID 1 because pre-update data
and pre-update parity data must be read internally as the parity data is updated
when data is updated.
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Hardware architecture
Hitachi Virtual Storage Platform G1000, G1500, and Virtual Storage Platform F1500 Hardware Guide
Содержание F1500
Страница 12: ...12 Preface Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 50: ...50 Introduction Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 106: ...106 Site preparation Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 120: ...120 Troubleshooting Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 132: ...132 Specifications Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 182: ...182 System option modes Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 204: ...204 Glossary Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...
Страница 207: ...Hitachi Virtual Storage Platform G1000 G1500 and Virtual Storage Platform F1500 Hardware Guide ...