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The Green and Virtual Data Center
book

The Green and Virtual Data Center

by Greg Schulz
April 2016
Intermediate to advanced content levelIntermediate to advanced
400 pages
10h 35m
English
Auerbach Publications
Content preview from The Green and Virtual Data Center
Tiered Storage—Balancing Application Service with PCFE Requirements 225
For example, a storage system can implement MAID Level 0 (no real
energy savings, no impact on performance) for active data. For less active
data, an administrator can choose a user-selectable setting to transition the
storage system to MAID Level 1, in which power is reduced by retracting
HDD read/write heads. For even more power savings, a HDD or RAID
group or some other unit of storage granularity can be put into a MAID
Level 2 mode, in which the speed of the drive platters is reduced. For the
most power savings, the administrator can select MAID Level 3, in which a
HDD or the RAID group is completely powered down or put into a sus-
pended/standby/sleep mode. Second-generation ...
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Publisher Resources

ISBN: 9781420086676