Currently viewing the tag: "Cruise Control"
Next under discussion for performance is array groups.
First the background (and as usual, apologies to those who already know all this). HDS enterprise arrays lay their disks out in array groups, either RAID-1/0, RAID-5 and RAID-6. Variable size LUNs are then carved out of the array groups for presentation to hosts. Obviously it [...]
Large disk arrays can suffer from an imbalance of data across their RAID/parity groups. This is inevitable even if you plan your LUN allocation as data profiles change over time and storage is allocated and de-allocated.
So, tools are available. Think of EMC Optimizer, HDS Cruise Control and Volume Migrator.
I’ve put a poll up [...]
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