How to Enable Drive Write Cache on SATA Hard Drives for HP ProLiant ML and DL Servers
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How_to_Enable_Write_Cache_on_SATA_HDDs.pdf (135.8K), Down : 13, 2013-03
HP SAS and SATA hard drives used in ProLiant servers 
are shipped with Drive Write Cache (DWC) disabled (by default) 
to protect customer data. HP customers should evaluate their own unique environments before determining
that enabling DWC is appropriate for them
hpacucli ctrl slot=2 modify dwc=enable
- to be continue -