If you want, I can:
The DS3512 had a cache memory. To protect data during a write operation, the controller used a battery-backed cache. If the battery failed, the controller automatically disabled the write cache to prevent data corruption. Without the write cache, the performance of the array dropped by nearly 80%. ibm ds3512 manual
Because the DS3500 series has reached its End of Service Life (EOSL), some official documentation can be harder to find. The specific table of available downloads can vary over time. You may need to use the site's search function with specific terms like "DS3500 installation guide" to locate the documents. If you want, I can: The DS3512 had a cache memory
Illuminates when the backup battery module has failed or lacks sufficient charge to protect cache memory during a power outage. Without the write cache, the performance of the