Im assisting a customer which is stuck with a few old dell appliances.
The following scenario :
Dell PE R710 (4GB RAM, Windows Server 2008x64, Perc6i/6e, SAS4x) Dell PE 1950 (4GB RAM, Windows Server 2008x64, Perc6i/6e, SAS4x) Both have 2 Dell PowerVault MD1000x 15x1TB SAS discs@RAID5 pr DAS)
Ive tested with ATTO and im getting 1,5GB/s read performance on anything over 32KB pr block but the write performance is VERY different.. 450MB/s on the R710 but i get 38MB/s on the 1950..
Ive tried to do software raid on the 2 DAS'es on the 1950.. no help.. 50ish MB/s
- Could this be a hw fault? or maybe the raid is degraded? (customer doenst have any tools installed to check this..) I know they have never updated any firmware so i plan do use the server update tool to update all and redo tests..
- Would 2xDAS@RAID5 through the Perc6/e controller and then software stripe ontop be faster than a 2xDAS@RAID6 HW striped (RAID60) ?? Sequential write performance is the only thing they need since this will be a dump station.
- If we were to replace the aging 1TB SAS drives with cheaper NAS ready 4TB SATA drives, would this work on the newest fw for the md1000 and anyone got some experience with the stability ? Any reccomendations on a drive?
Any tips are apriciated