Hitachi VSP G1000

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Zero page reclamation in Hitachi VSP

We can reclaim zero pages in a DP-VOL to free pool capacity. If a page assigned to a DP-VOL contains only zero binary data, we can reclaim the page. To reclaim zero pages in...

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Hitachi Virtual Storage Platform (VSP) Specifications

Hitachi VSP specifications Architecture Hitachi Hierarchical Star Network Maximum internal capacity 2.5PB Maximum internal and external capacity 255PB Maximum number of logical volumes 65,280 Cache memory capacity Minimum 128GB Maximum 1TB Cache flash memory...

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What is hitachi dynamic provisioning?

Hitachi Dynamic Provisioning (HDP) Dynamic provisioning in Hitachi virtual storage platform(VSP) works on the concept of thin provisioning. Hitachi Dynamic Provisioning (HDP) was first introduced on the USP V/VM arrays. It provides a mechanism...

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HDS definitions of notations

Hitachi storage definitions of notations Before getting to explore Hitachi storage arrays, first, allow us to get some Hitachi data systems definitions of terms. Array Group (Disk feature) – The term used to describe...

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RAID levels comparison in Hiatchi VSP storage systems

RAID‐10 RAID‐5 RAID‐6 Description Data Striping +(plus) Mirroring Data Striping with +(plus) distributed parity Data Striping with two distributed parities Disk count 4 (or) 8 4 (or) 8 8 Advantages Highest performance with data...