Pegasus3 4Bay 12TB Read/Write Speed???

  • Last Post 17 July 2019
Mark Johann posted this 05 June 2019

What's typical read and write speeds for this device running a raid5?  I'm getting 586 write and 374 read with AJA, which seems a bit slow???  I've an open ticket with tech support that's been going on for a while and can't get a definitive asnwer if this is normal for this unit or not.  They've had me change the powersavinglevel from "0" to "3" and no idea as to the reasoning behind this.  Any help or ideas?


PROMISE Technology Inc. posted this 17 July 2019

Hi Mark,

Performance is a combination of many factors, the speed of your MAC (and how loaded it is with other tasts), raid type, the hard drive used, and number of drives in the array. Typically, small RAID5 arrays of 4 drives do not give maximum performance. Generally the more disks in the array the better the performance, so if high bandwidth is a requirement, then a 4-drive Pegasus is not the ideal solution, a 6 drive or 8 drive Pegaus will give much higher bandwidth all else being equal.