Proper drive arm recommendation
Posted on 2010-11-17
I have a customer looking at iASP and our config, due to todays market, has just over half of the number of arms as his current config. He is concerned about performance on the new system due to the decrease in the number of arms. The new controllers and new drives are substantially faster today so I dont THINK it will be an issue.
But, does anyone have any whitepapers or recommendations that I can use in our behalf (or not, if that is the case)? I realize that we can do a performance analysis and submit it to the sizing tool but that takes a lot of time and we are not there yet.
Another piece of info is that the customer would be moving from RAID5 to RAID6 which should also improve performance.
This is on an iSeries but I dont think the question would be that difference on xSeries or pSeries.
Thanks in advance