Few days ago, We have allocated three new volumes sized 1.5 TB,1,5TB, 2TB respectively to one of the SQL server from a DP Pool(HDT Enabled).Now the application team is complianing as they see some latency in read/write operations in the DB. Well, these three volumes are just 1% utilised in the pool.
Below is the Pool configuration
Tier 1 - SSD (Raid 6 - 6D+2P)
Tier 2 - SAS 10,000 RPM (RAID 6) - Both (6D+2P) & (14D+2P)
Tier 3 - SAS 7,200 RPM (RAID 6) - Both (6D+2P) & (14D+2P)
Few other V-VOLs allocated from the same pool are having poor application performance (Response time). Is that because we have both 6D+2P & 14D+2P configuration in the same tier??? Any help please???