Hi guys,
We have a 16 bay 6TB HDD RAID 6 array with seagate sas 12 64mb cache drives 7200rpm. In the adaptec controller software we have the option to set each drive as either write back or write through.
It is my understanding that write back is cache enabled setting. So I've set all sixteen drives to write back. I notice about a 200MBps improvement in write performance on the array using AJA speed test.
For some reason the default setting was write through. So I'm just wondering if there is any concerns in enabling write back? This array really needs read performance as it's an AVID server so it needs to play back footage without dropping frames. Would enabling the cache cause the read performance to diminish?
thanks for any advice
-Myth
We have a 16 bay 6TB HDD RAID 6 array with seagate sas 12 64mb cache drives 7200rpm. In the adaptec controller software we have the option to set each drive as either write back or write through.
It is my understanding that write back is cache enabled setting. So I've set all sixteen drives to write back. I notice about a 200MBps improvement in write performance on the array using AJA speed test.
For some reason the default setting was write through. So I'm just wondering if there is any concerns in enabling write back? This array really needs read performance as it's an AVID server so it needs to play back footage without dropping frames. Would enabling the cache cause the read performance to diminish?
thanks for any advice
-Myth