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Managing Flash Accel caching systems : Setting the cache mode for virtual machines and disks
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In Write Thru mode (the default), read data is written to cache and read requests are serviced from cache. Write data is written to the storage system, then to cache. Write Thru is the optimal setting for Flash Accel when the product is used for read-intensive applications.
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In Write Around mode, read data is written to cache and read requests are serviced from cache. Write data is written to the storage system but not to cache.
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In Pass Thru mode, no data is cached and no I/O is serviced from cache. The cache is kept warm for virtual disks. It remains populated with data from previous application read and write activity.
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From the home page of the Flash Accel Management Console, click the wrench icon for the VM on which you want to set the cache mode and select Cache Mode > mode.
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From the home page of the Flash Accel Management Console, select each VM on which you want to set the cache mode and click Cache Mode in the Bulk Actions area of the FMC. In the cache mode dialog box, select the button for the cache mode and click Submit.
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From the disks page of the Flash Accel Management Console, click the wrench icon for the disk on which you want to set the cache mode and select Cache Mode > mode.
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From the disks page of the Flash Accel Management Console, select each disk on which you want to set the cache mode and click Cache Mode in the Bulk Actions area of the FMC. In the cache mode dialog box, select the button for the cache mode and click Submit.
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