If you have read my earlier posts about the problems rebooting some recent Synology NAS devices, specifically, the DS1512+, DS1812+ and the DS212j (Asian shipments only), (see posts here and here), you may remember that there were hints that the problem was a hardware issue that Synology was near to tracking down.
Synology today issues a press release indicating that they had tracked the issue down to bad flash memory chips:
Synology® Fixes Vulnerability in a Small Batch of DiskStations
Taipei, Taiwan—April 13, 2012—Synology® has confirmed a known system issue caused by flawed flash memory chips. This issue can occur when users reboot the DiskStation; the unit will not restart and the blue LED light will blink continuously. This issue does not affect data stored on the DiskStation and will not result in data loss.
The affected products include DS1512+ and DS1812+ worldwide, and DS212j for Asia shipments only. The best estimated quantity is 480, 120 and 700 units respectively and most of them have been returned or are on the way to Synology.
Users who encounter this issue should contact Synology at [email protected] and our technical support team will provide them with the best solution. If users did not encounter the above issue but still have any concerns, or users want to make sure the product that they are going to purchase is not affected, they are welcome to send serial numbers to [email protected] for verification.
For resellers who want to check whether their on-hand stocks are affected, they are also welcome to send serial numbers to [email protected] for verification. Synology strives to ensure all customers can receive our rapid and full support.
"We sincerely apologize for any inconvenience caused by this issue, and appreciate your understanding in this matter. Synology has taken immediate action to correct the situation, and we remain one hundred percent dedicated to serving our customers," said Vic Hsu, CEO of Synology Inc. "Rest assured we have already identified and fixed this problem. No future shipments will be affected."
Synology at a Glance
Synology is dedicated to taking full advantage of the latest technologies to bring businesses and home users reliable and affordable ways to centralize data storage, simplify data backup, share and sync files across different platforms, and access data on-the-go. Synology aims to deliver products with forward-thinking features and the best in class customer services.
Source: Synology
So, it looks like Synology is taking proper steps to address the problem, and that in a short time you can be assured that units left in stock will be ones that are fixed.

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