Dell - Internal Use - Confidential Jose, The link that was provided for the documentation is what we have for DDP, this would apply to all of the MD3 series.
The best way to determine if DDP is a good fit vs traditional RAID, would be to test in the environment, since each environment/workload is different. A factor to take into account is, if the hard drive is larger than 3 TB, it would be highly recommended to move to DDP, due to rebuild times. Pages 11-12: Performance Dynamic Given the nature of D-Stripe distribution within a Dynamic Disk Pool, performance is largely going to depend on the frequency of I/O requests to specific disks within the pool. For environments where potential disk contention is not a limiting factor for performance but instead the effective bottleneck is at the controller level for items such as CPU resources and available host-side bandwidth, then very little difference would be expected between a Dynamic Disk Pool and a similarly configured traditional RAID Disk Group(s). Chadley Hamil Master Engineer – Team Lead Dell | Storage Support Services Hours: Monday – Friday, 7am – 4pm CST [email protected] Confidentiality Notice | This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential or proprietary information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, immediately contact the sender by reply e-mail and destroy all copies of the original message. -----Original Message----- From: linux-poweredge-bounces-Lists On Behalf Of Jose-Marcio Martins da Cruz Sent: Friday, June 17, 2016 1:50 AM To: linux-poweredge-Lists <[email protected]> Cc: Jose-Marcio Martins da Cruz <[email protected]> Subject: [Linux-PowerEdge] DDP and IOPS Hello, I can find many links on how to estimate the IOPS by kind of RAID, but I haven't found any for DDP on a MD34xx. I've found a technical paper, which proposes just qualitative feelings : http://www.dell.com/learn/us/en/04/shared-content~data-sheets~en/documents~dynamic_disk_pooling_technical_report.pdf How to compare DDP IOPS with other kind of RAID ? Thanks José-Marcio _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge
