While I was at TechEd, I had a great time talking with our customers and hearing about their experiences as Exchange administrators. One of the areas that have come up in discussion a lot has to ...
Updated Jul 01, 2019
Version 2.0
Blog Post
Nicole,
I'm experiencing high latency with on my 5.5 servers, due to some poor configuration when the servers were originally built. Although write-back cache is enabled, with battery backup (SmartArray 5i with internal disks), and my avg disk sec/transactions are low, I think the cache is full, and it's not flushing out to disk fast enough. Disk usage% time can spike at over 1100, and over 2 hours in the A.M. it can average over 500%, with disk queue lengths hovering around 7. Only 4 spindles for the database in a RAID5, and I know that the server is pounded flat. Would increasing the read cache size help me out on this, or am I wasting time until I convince them to buy the SAN?
I'm experiencing high latency with on my 5.5 servers, due to some poor configuration when the servers were originally built. Although write-back cache is enabled, with battery backup (SmartArray 5i with internal disks), and my avg disk sec/transactions are low, I think the cache is full, and it's not flushing out to disk fast enough. Disk usage% time can spike at over 1100, and over 2 hours in the A.M. it can average over 500%, with disk queue lengths hovering around 7. Only 4 spindles for the database in a RAID5, and I know that the server is pounded flat. Would increasing the read cache size help me out on this, or am I wasting time until I convince them to buy the SAN?