NSE tech flitch: NSE finds root cause of Feb 24 technical glitch, takes steps to address issue

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MUMBAI: The National Stock Exchange at this time stated that it has already undertaken varied steps and sure different steps are underneath implementation to address the important thing points that led to the four-hour lengthy halt in its buying and selling system on February 24.

NSE had beforehand acknowledged that its buying and selling system was halted on the day as a result of the instability of telecom hyperlinks from two of its service suppliers affected the functioning of the danger administration system, which might have made it unacceptable to proceed buying and selling given the dangers concerned.

The trade, after additional investigations, has discovered that the danger administration system was affected by the disruption within the telecom hyperlinks primarily as a result of of “unexpected behaviour of the Storage Area Network (SAN) system”.

The trade stated that its SAN system is fault-tolerant and is designed to operate seamlessly even within the case of telecom failure between the first information web site at Bandra Kurla Complex and the close to catastrophe restoration web site at Kurla.

“Post link-failure, the SAN system at the primary data centre stopped functioning, which was completely unexpected. Subsequent incident analysis showed that the problem was caused by failover logic implemented by the vendor, which did not conform to NSE’s stated design requirements, coupled with issues in the configuration done by the SAN vendor that triggered the failover logic,” the trade stated.

NSE additional added that the precise failure logic utilized by the seller was not documented, and extra importantly, not communicated to the NSE. “The resultant SAN failure led to the incident on February 24,” the trade stated.

“We had already placed orders in January for two additional telecom provider links and have removed the SAN software that caused the incident. We are also exploring alternate solutions to de-risk dependency of critical applications to a single storage device,” NSE stated.

The inventory trade stated that on February 24, 97 per cent of the money trades and 87 per cent of the fairness derivatives on the BSE had been cleared by the NSE Clearing Corporation as brokers flocked to BSE to shut open positions.

Out of the BSE trades that had been cleared by NSE Clearing, 64 per cent of the common money market trades (excluding block offers) and 56 per cent of the fairness derivatives trades occurred between 11:40 am and three:30 pm when buying and selling on the NSE was closed, the trade stated.

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