StoreOnce Backup Storage

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StoreOnce 4900 painfully slow replication


We have two StoreOnce 4900 which are connected by two fiber optic adapters, 10 GBe each, bonded as one connection. Some years ago when replication was first configured it used to replicate around 35 TB in about twelve hours, but now it's been over 15 days and it's barely 50% of 80TB.

We already checked network issues, the link is idle as it is almost entirely dedicated to this replication. configuration seems to be ok, no limits as for bandwidth or anything, maximum tapes to be replicated is 96, but throughput reaches around 9 MBps.

Testing with local VSAs bandwith behaves as 1Gbps, but between the 4900 it'd look like a 100 Mbps link. Firmware version is the latest that was recommended 3.16.5.

Any suggestions on what may be happening?

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