Hardware failure causes a temporary outage on the Arbitrum network


After a hardware failure, the Ethereum layer-two network Arbitrum has had its second interruption in less than five months.

At the moment, Arbitrum has back online. However, according to the crew, there was some outage on Sunday night. As per the timing of the tweets, the network was offline for around seven hours.

At the moment, the Offchain Labs platform indicated that the sequencer was having trouble preventing transactions from being executed for the time being.

Arbitrum presented a post mortem on Monday, detailing what had caused the temporary outage.  The primary problem was a hardware failure in the main Sequencer node, it said, adding that backup Sequencer redundancy that would typically assume over also failed owing to a software upgrade that was still in progress.

When the network’s Sequencer fails, the network is meant to fall back to layer-one Ethereum to execute transactions. Nevertheless, steps were taken to ensure that the Sequencer validated all transactions before going down. As a result, 284 transactions were blocked from being uploaded to the Ethereum chain thanks to the Sequencer.

This was a little downtime in the big scope of things, but the team did caution customers that the network is still in testing.

“The Arbitrum network is still in beta, and we will keep this moniker as long as there are points of centralization that still exist in the system.”

The team stated that it was working on decentralizing the network even further with a twofold method of lowering Sequencer outage implemented in the following weeks and months.

Arbitrum had a similar Sequencer outage in mid-September, when a glitch led the system to get stuck after a big batch of transactions was performed in a short period.

Arbitrum is an Ethereum layer-two network that batches transactions using optimistic rollups for quicker and cheaper processing. Arbitrum One was established in early September after a large $120 million investment round.

Arbitrum is now the most common layer-two network, as per layer-two statistics platform L2beat, with a total value locked of $2.57 billion, giving it a 47 percent L2 market share.


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