Storage/SSD by stefan @ 2025-10-20
Thanks to the large storage capacity, the Ace A55 can be successfully used as a secondary storage drive where transfer rates are not crucial. The drive is equipped with a healthy amount of pseudoSLC cache, so we needed to fill over 1TB of data for noticing drops in write speeds, while the TBW rating is set at 2000 for the 4TB SKU.
Before starting the second stage of the testing process, we filled the drive over 50%; during this time, we have monitored the transfer rates. The write speeds started at optimal levels:
After writing about 376GB, the writes were still reaching about 450MB/s:
The first notable drop occurred after about 1011GB of written data:
Till the end of the write workload, the transfer speed did hover between 40MB/s and 100MB/s, typical for QLC flash with pseudoSLC fully filled:
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