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@Netgear Moderators: Connecting ReadyNAS on OS6 to ups turns on the disk write cache? Please clarify
Dear Netgear moderators, please be so kind to clarify on the issue:
Does connecting a ReadyNAS running OS6 to a ups turn on the disk write cache?
Simple answer YES or NO would be preferred.
However as the ReadyNAS population is very heterogenous the answer might not be that simple, in which case you are more than welcome to be a bit more verbose. Thank you very much in advance.
NO, it should not turn on Disk Write Cache. Though it is advise to have a UPS connected when enabling this option on Legacy NAS (Ultra, Pro, NVX) but this should not turn on automatically when a UPS has been connected on the NAS. See Optimizing System Performance.
With OS6 this option is not available anymore, so this is not applicable. We can say there is nothing being enabled when a UPS is connected
NO, it should not turn on Disk Write Cache. Though it is advise to have a UPS connected when enabling this option on Legacy NAS (Ultra, Pro, NVX) but this should not turn on automatically when a UPS has been connected on the NAS. See Optimizing System Performance.
With OS6 this option is not available anymore, so this is not applicable. We can say there is nothing being enabled when a UPS is connected
Your response is somewhat indicating, that under OS6
(1) by default the disk write cache is NOT enabled. Please confirm.
(2) you know a way to manually enable it. Please share your knowledge how this is done.
Furthermore, if my assumption (1) is true, I would like to understand how the disk write cache on my ReadyNAS (had three so far) became enabled. I did not do that manually, but hooked them all up to ups. The kernel.log is showing strings like "[sda] Write cache: enabled, read cache: enabled".
My explanation: It is either switched on by default after the initial setup, or some other action (hooking up nas to ups?) did the trick. Can you shed a light on that?
