Dell H700, H800

Dell

DELL PERC H700 and H800 Technical Guide 7

Figure 2. PERC H700 Modular

1.3 PERC H800 Overview

The PERC H800 external host-RAID product is supported with 11th Generation Dell PowerEdge servers

for expanding storage to the Dell™ PowerVault™ MD1200 and MD1220 6Gb/s SAS enclosures.

The PERC H800 Adapter with two x4 external mini-SAS ports supports the PCIe 2.0 x8 host interface.

Cache options include the standard 512 MB transportable battery backup unit (TBBU) and the

transportable 512 MB and 1 GB non-volatile cache. The PERC H800 Adapter is installed in a PCIe slot

in the server. See Figure 3 for an angled view of the PERC H800 adapter.

Contents

Main Page Table of Contents Tables Figures Dell 1 Product Comparison 1.1 Overview 1.2 PERC H700 Overview 1.3 PERC H800 Overview Page 2 New Features 2.2.1 6Gb/s SAS Performance Benefit over 3Gb/s SAS 2.2.2 6Gb/s SAS Expectation 3 Product Support 3.1 Dell PowerEdge Server Support 3.2 Management Software Support 3.3 Operating System Support 3.4 Drive Support Dell 4 Product Overview 4.1 PERC H700 and PERC H800 Overview Table 7. PERC H700 and PERC H800 Features Page 4.2 CacheCade 4.3 Cut-Through IO 4.4 Reconfiguring Virtual Disks Dell Table 8. RAID Level Migration 4.5 Fault-Tolerance Features 4.5.1 Non-Volatile Cache 4.5.2 Automatic Replace Member with Predicted Failure 4.5.3 Redundant Path with Load Balancing Support 4.5.4 Failed Physical Disk Detection 4.5.5 Using Replace Member and Revertible Hot Spares 4.5.6 Enclosure Affinity 4.5.7 Battery Back-up of Controller Cache The replacement drive must be of equal or greater capacity than the one it is replacing. 4.5.7.1 Battery Management 4.5.7.2 Battery Learn Cycle 4.7 Disk Roaming 4.8 Disk Migration 4.9.2 Configuring and Managing Secured RAID Dell OpenManage Storage Management BIOS Configuration Utility 4.10 Virtual Disk Write Cache Policies 4.11 Virtual Disk Read Cache Policies Always Read AheadRead-Ahead capability allows the controller to read sequentially ahead 5 RAID Overview 5.3.2 RAID 1 (Mirroring) 5.3.3 RAID 5 (Striping With Distributed Parity) = 5.3.4 RAID 6 (Striping With Dual Distributed Parity) 5.3.5 RAID 10 (Striping over Mirrored Sets) 5.3.6 RAID 50 (Striping Across RAID 5) = 5.3.7 RAID 60 (Striping Across RAID 6) Page Dell Appendix A. Additional Resources Table 9. Resource Contact Information and Descriptions