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Showing posts with the label DR

he operation did not complete because the media is write protected - Pt2

I didn't expect to have to revisit this but my recent DR test has highlighted another issue along the same lines. Trying to recover the same server again and the drives once again were not writable. No problem I know how to fix that. In to Diskpart and ...oh no hidden volumes. What is going on? A quick check and the volumes are set to read only, but are not showing as hidden. A quick look through the list of commands available in Diskpart revealed the Detail command, running Det Vol on an affected volume gives a listing of all the attributes something like the following Read-only                          : Yes Hidden                               : No No Default Drive Letter    : Yes Shadow Copy             ...

Replicating across the void

Our DR EqualLogic has relocated to our remote site and is up and running. there is a whole bunch of networking that need to be done, but now the we have  Dell Sumo unit on the end of a 1Gbps link and our production units at the other end with replication going between the two. Somehow between BT and Virgin Media we have managed to get jumbo frames working between the two sites and with 3ms delay each way on the 1Gig link we actually saw it hitting the full 1Gbps speed, which is not what we would have expected, anything in the 5-800 would have been desirable, but with the 6ms round trip we were expecting to see around 250 or less certainly our testing with WANem indicated a much slower replication, though that was with 5 EqualLogic units (1 SATA and 4 SAS) replicating around 20 volumes. Replicating just the one or two volumes saw a much lower transfer rate. We will have to see how it goes over the next few weeks, especially once the VMS boys start replicating their EVA stuff. T...