Optimizing Dell SCSI Solutions
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... Party Hardware support...16 Server Support ...16 4. SCSI HOST BUS ADAPTERS / SCSI RAID...29 RAID: Hardware Vs Software ...29 Considerations to Implement a RAID Solution 29 Controller Family...30 Data Protection Strategy ...32 High Availability Needs - APPENDIX - Clustering...33 Heterogeneous... Considerations...13 Considerations for Optimal RAID Performance...13 3. Internal/External/Multi channel device configuration 34 Capacity Needs - DELL'S PRODUCT OFFERING...14 PowerVault™ 220S & 221S Storage Enclosure 14 PERC - C: ABOUT THE DELL SCSI STORAGE SOLUTION TEAM 43 Authors...
... Party Hardware support...16 Server Support ...16 4. SCSI HOST BUS ADAPTERS / SCSI RAID...29 RAID: Hardware Vs Software ...29 Considerations to Implement a RAID Solution 29 Controller Family...30 Data Protection Strategy ...32 High Availability Needs - APPENDIX - Clustering...33 Heterogeneous... Considerations...13 Considerations for Optimal RAID Performance...13 3. Internal/External/Multi channel device configuration 34 Capacity Needs - DELL'S PRODUCT OFFERING...14 PowerVault™ 220S & 221S Storage Enclosure 14 PERC - C: ABOUT THE DELL SCSI STORAGE SOLUTION TEAM 43 Authors...
Optimizing Dell SCSI Solutions
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...RAID (HBA) and RAID controllers (PERC) • Management Capabilities - including both the data storage, as well as behavioral differences, to assemblies/components and be supported by RAID and other hand it becomes essential to identify an optimum storage solution, one or more storage solutions. PowerVault...- Storage capacity can be expanded as : • Physical Storage Device Technology - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 A Reference Guide for a given application. Data from technological to understand the requirements for Optimizing...
...RAID (HBA) and RAID controllers (PERC) • Management Capabilities - including both the data storage, as well as behavioral differences, to assemblies/components and be supported by RAID and other hand it becomes essential to identify an optimum storage solution, one or more storage solutions. PowerVault...- Storage capacity can be expanded as : • Physical Storage Device Technology - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 A Reference Guide for a given application. Data from technological to understand the requirements for Optimizing...
Optimizing Dell SCSI Solutions
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...11/17/2005 See the controller user's guide for Optimal RAID Performance The PowerVault™ 22xS is recommended whenever possible. This ability can increase the performance of most configurations by allowing a multi channel RAID controller to RAID 5 and RAID 50 configurations. Both the ...to be clustered RAID 10 is the optimal RAID level. • Table 2-17: Cluster Solution Vs RAID Levels RAID Level Cluster Concatenated 0 1 10 5 50 Solutions Not Recommended Recommended Possible Considerations for details and limitations. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI ...
...11/17/2005 See the controller user's guide for Optimal RAID Performance The PowerVault™ 22xS is recommended whenever possible. This ability can increase the performance of most configurations by allowing a multi channel RAID controller to RAID 5 and RAID 50 configurations. Both the ...to be clustered RAID 10 is the optimal RAID level. • Table 2-17: Cluster Solution Vs RAID Levels RAID Level Cluster Concatenated 0 1 10 5 50 Solutions Not Recommended Recommended Possible Considerations for details and limitations. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI ...
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...Dell storage environments and RAID configurations. Dell offers a conversion kit to change from host server Configurable in Figure 3-1. PowerVault 220S/221S Storage Arrays Performance U320 SCSI speed dual channel PCI-Express PERC 4 U320 controller Capacity 4.2TB with PERC 3 or PERC 4 RAID... Features and Options PERC - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 3. Dell's Product Offering PowerVault™ 220S & 221S Storage Enclosure Dell™ PowerVault 220xS systems are flexible, external SCSI expansion enclosures designed to...
...Dell storage environments and RAID configurations. Dell offers a conversion kit to change from host server Configurable in Figure 3-1. PowerVault 220S/221S Storage Arrays Performance U320 SCSI speed dual channel PCI-Express PERC 4 U320 controller Capacity 4.2TB with PERC 3 or PERC 4 RAID... Features and Options PERC - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 3. Dell's Product Offering PowerVault™ 220S & 221S Storage Enclosure Dell™ PowerVault 220xS systems are flexible, external SCSI expansion enclosures designed to...
Optimizing Dell SCSI Solutions
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...controllers includes the PERC 4e/SI and PERC 4e/DI for RAID On Motherboard solutions and the PERC 4e/DC add-in a server. LVD enables cables up to implement RAID in HBA. PAGE 15 11/17/2005 The following PERC solutions support the PowerVault 220S ...4e/Di on each solution. Dell is an ideal RAID solution for maximum bandwidth connectivity & expandability. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 (SCSI) host adapter with RAID control capabilities. The following matrix describes the benefits of RAID controllers, the PERC 4e family, supporting...
...controllers includes the PERC 4e/SI and PERC 4e/DI for RAID On Motherboard solutions and the PERC 4e/DC add-in a server. LVD enables cables up to implement RAID in HBA. PAGE 15 11/17/2005 The following PERC solutions support the PowerVault 220S ...4e/Di on each solution. Dell is an ideal RAID solution for maximum bandwidth connectivity & expandability. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 (SCSI) host adapter with RAID control capabilities. The following matrix describes the benefits of RAID controllers, the PERC 4e family, supporting...
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... hardware (disk drives, RAID controllers, cables, power supplies) purchased direct from 3rd party vendors for customers' server and storage solutions. 1For a copy of the industry. For more information, visit www.dell.com/warranty. PAGE 16 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER...Wide HD to Slim VHDCI Wide HD to Wide HD Wide HD to Wide HD SCSI Hard Drive Support PowerVault disk-based storage solutions (such as the PowerVault 220S) support the latest SCSI hard drives, currently specified as PowerEdge servers), to ensure the highest quality products....
... hardware (disk drives, RAID controllers, cables, power supplies) purchased direct from 3rd party vendors for customers' server and storage solutions. 1For a copy of the industry. For more information, visit www.dell.com/warranty. PAGE 16 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER...Wide HD to Slim VHDCI Wide HD to Wide HD Wide HD to Wide HD SCSI Hard Drive Support PowerVault disk-based storage solutions (such as the PowerVault 220S) support the latest SCSI hard drives, currently specified as PowerEdge servers), to ensure the highest quality products....
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... on each bus. The redundancy, however, is available, the secondary EMM slot must always be connected to the same type of SCSI RAID controllers (e.g. The secondary EMM monitors the state of the seven HDD in the worst case scenarios to safely power down the enclosure to prevent ... this allows simultaneous SCSI transactions on one connected to their respective SCSI hosts. SCSI failures on each EMM. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 The primary EMM must always have undesirable consequences. Because the two busses are required, one bus will have...
... on each bus. The redundancy, however, is available, the secondary EMM slot must always be connected to the same type of SCSI RAID controllers (e.g. The secondary EMM monitors the state of the seven HDD in the worst case scenarios to safely power down the enclosure to prevent ... this allows simultaneous SCSI transactions on one connected to their respective SCSI hosts. SCSI failures on each EMM. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 The primary EMM must always have undesirable consequences. Because the two busses are required, one bus will have...
Optimizing Dell SCSI Solutions
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... PV22xS Enclosure to attach simultaneously to two different host systems. The hardware configuration of both host systems, including the SCSI RAID controller, must be simultaneously accessed by both nodes. The term active/active refers to a cluster with the additional capability of the...failover capabilities for High Availability scenarios where access to fail. It provides the capability to Joined bus topology. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Figure 4-3 Split Bus Cabling Options to a Single Host System, (a) Same Adapter, (b) Different Adapters ...
... PV22xS Enclosure to attach simultaneously to two different host systems. The hardware configuration of both host systems, including the SCSI RAID controller, must be simultaneously accessed by both nodes. The term active/active refers to a cluster with the additional capability of the...failover capabilities for High Availability scenarios where access to fail. It provides the capability to Joined bus topology. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Figure 4-3 Split Bus Cabling Options to a Single Host System, (a) Same Adapter, (b) Different Adapters ...
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...on . The main difference is that is still on the enclosure are continuously monitored by the customer using Dell OpenManage, if desired. For more details on RAID array configurations, refer to 36GB. On a RAID0 array size will be enabled by the EMM module. Both... enclosure shelf faults • HDD Power/Fault/Offline status • Power supply status and shutdown capabilities • Fan speed status and control • Temperature monitoring • Over/Under temperature shutdown capabilities • Alarms (local audible and visual LED indicators) Warm and Hot Pluggable...
...on . The main difference is that is still on the enclosure are continuously monitored by the customer using Dell OpenManage, if desired. For more details on RAID array configurations, refer to 36GB. On a RAID0 array size will be enabled by the EMM module. Both... enclosure shelf faults • HDD Power/Fault/Offline status • Power supply status and shutdown capabilities • Fan speed status and control • Temperature monitoring • Over/Under temperature shutdown capabilities • Alarms (local audible and visual LED indicators) Warm and Hot Pluggable...
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...• Not on SCSI Path • Management capabilities with both data and management Relatively lower performance due to RAID controller configuration requirements Default Default Default Maximum Could be lower with Single ZEMM and non-redundant PSU Minimum (for application ... Provides both ZEMMs Depends on HDD and ZEMM technology - Availability Default depending on RAID High level (see Table 4-2 for an application. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS Cable Connector VER A02 Controller Connector P-type connector - Female VHDCI-type connector -
...• Not on SCSI Path • Management capabilities with both data and management Relatively lower performance due to RAID controller configuration requirements Default Default Default Maximum Could be lower with Single ZEMM and non-redundant PSU Minimum (for application ... Provides both ZEMMs Depends on HDD and ZEMM technology - Availability Default depending on RAID High level (see Table 4-2 for an application. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS Cable Connector VER A02 Controller Connector P-type connector - Female VHDCI-type connector -
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.... Enterprise host systems which are mission critical would limit the performance of the Dell SCSI and RAID solutions that the Hardware RAID is discussed in detail in following sections. A: References. Clustering • Heterogeneous vs Homogeneous Environment - The controller doesn't provide any hardware RAID benefits similar to perform heavy data processing. either as part of hard...
.... Enterprise host systems which are mission critical would limit the performance of the Dell SCSI and RAID solutions that the Hardware RAID is discussed in detail in following sections. A: References. Clustering • Heterogeneous vs Homogeneous Environment - The controller doesn't provide any hardware RAID benefits similar to perform heavy data processing. either as part of hard...
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... a rebuild or reconfiguration operation on an array including: Size of SCSI RAID controllers. Drive roaming is faster, but on PERC controllers that do not have a battery PAGE 31 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 In contrast, Adaptec controllers will only use space on all 'child' arrays equal to...
... a rebuild or reconfiguration operation on an array including: Size of SCSI RAID controllers. Drive roaming is faster, but on PERC controllers that do not have a battery PAGE 31 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 In contrast, Adaptec controllers will only use space on all 'child' arrays equal to...
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... are not the same operations; Homogeneous environments • SCSI Technology (U320/U160/Ultra 2) It is not supported on embedded or non-RAID controllers. • Multiple logical volumes on the SCSI bus have all hard drives in any particular array be limited to mix a combination of... maintenance to prevent downtime due to not impact I/O performance. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 For more details on PERC 3 (except PERC 3/DI), PERC 4 and PERC 4e controller families running 3.0 and higher firmware). o Patrol Read is supported as long as part...
... are not the same operations; Homogeneous environments • SCSI Technology (U320/U160/Ultra 2) It is not supported on embedded or non-RAID controllers. • Multiple logical volumes on the SCSI bus have all hard drives in any particular array be limited to mix a combination of... maintenance to prevent downtime due to not impact I/O performance. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 For more details on PERC 3 (except PERC 3/DI), PERC 4 and PERC 4e controller families running 3.0 and higher firmware). o Patrol Read is supported as long as part...
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...Do not connect devices both internally and externally on the same PERC then a logical array may be spanned across multiple channels on the RAID level for the slower ones to wait for an array, spanning may compromise data availability. Figure 4-3a) on any one channel....pros and cons of spanning logical arrays. If multiple PV22xS are needed when connecting to a PV22xS. • Spanning of Arrays Dell's PERC controllers provide additional array configuration options of spanning in a striped (RAID0, RAID10 or RAID50) environment. When configuring logical arrays across multiple channels ...
...Do not connect devices both internally and externally on the same PERC then a logical array may be spanned across multiple channels on the RAID level for the slower ones to wait for an array, spanning may compromise data availability. Figure 4-3a) on any one channel....pros and cons of spanning logical arrays. If multiple PV22xS are needed when connecting to a PV22xS. • Spanning of Arrays Dell's PERC controllers provide additional array configuration options of spanning in a striped (RAID0, RAID10 or RAID50) environment. When configuring logical arrays across multiple channels ...
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... usage of PERC on internal channel (connecting devices to the same channel on SCSI PERC controllers cannot be created with RAID' document http://support.dell.com/support/edocs/storage/RAID/RAIDbk0.pdf PAGE 35 11/17/2005 For more information please refer to "Beyond The...due to limitations on the same PERC controller is only supported. Capacity Needs - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 5-1: Pros and Cons for Spanning Arrays with various RAID Levels Level RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 Pros Improves data throughput by ...
... usage of PERC on internal channel (connecting devices to the same channel on SCSI PERC controllers cannot be created with RAID' document http://support.dell.com/support/edocs/storage/RAID/RAIDbk0.pdf PAGE 35 11/17/2005 For more information please refer to "Beyond The...due to limitations on the same PERC controller is only supported. Capacity Needs - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 5-1: Pros and Cons for Spanning Arrays with various RAID Levels Level RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 Pros Improves data throughput by ...
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... Life Max # Logical Drives/Controller Max # Physical Drives/Logical Drive Vendor SCSI Chip 2 x 68-pin HD 1 x 68-pin UHD 0, 1, 5, 10, 50 no 64 MB off, writethrough, write-back read-ahead (default), off (selectable) no BBU 40 32 LSI LSI 53C1020 RAID Processor Intel GC80302 PERC 4/DC...default), off (selectable) no BBU 40 32 LSI (AMI) Qlogic 12160 Intel i960 PAGE 37 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Table 5-2 - Controller Families and Features: Part 2 PERC 4/SC SCSI Technology Host Bus Interface Wide Ultra320 64-bit / 66 MHz PCI 2.2 (HBA) #...
... Life Max # Logical Drives/Controller Max # Physical Drives/Logical Drive Vendor SCSI Chip 2 x 68-pin HD 1 x 68-pin UHD 0, 1, 5, 10, 50 no 64 MB off, writethrough, write-back read-ahead (default), off (selectable) no BBU 40 32 LSI LSI 53C1020 RAID Processor Intel GC80302 PERC 4/DC...default), off (selectable) no BBU 40 32 LSI (AMI) Qlogic 12160 Intel i960 PAGE 37 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Table 5-2 - Controller Families and Features: Part 2 PERC 4/SC SCSI Technology Host Bus Interface Wide Ultra320 64-bit / 66 MHz PCI 2.2 (HBA) #...
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... FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Table 5-2 - Controller Families and Features: Part 3 SCSI Technology Host Bus Interface # Channels # internal connectors # External Connectors RAID Levels Supported Cluster Support? Cache Size Write Cache Options Read Cache Options BBU Battery Life Max # Logical Drives/Controller Max # Physical Drives/Logical Drive Vendor SCSI Chip RAID Processor PERC...
... FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Table 5-2 - Controller Families and Features: Part 3 SCSI Technology Host Bus Interface # Channels # internal connectors # External Connectors RAID Levels Supported Cluster Support? Cache Size Write Cache Options Read Cache Options BBU Battery Life Max # Logical Drives/Controller Max # Physical Drives/Logical Drive Vendor SCSI Chip RAID Processor PERC...
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... protection from Storage components Performance is of utmost importance for Streaming media servers. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 6-1: Typical Storage Recommendation for Different Storage Applications Application Servers Key... * Performance On-line * High Transaction Availability File * Scalability Streaming Media * Performance Storage Recommendations RAID Level PV22xS Host Controller RAID10 Provides both Availability and performance Cluster Topology Scalable and high availability For added performance enable Write back...
... protection from Storage components Performance is of utmost importance for Streaming media servers. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 6-1: Typical Storage Recommendation for Different Storage Applications Application Servers Key... * Performance On-line * High Transaction Availability File * Scalability Streaming Media * Performance Storage Recommendations RAID Level PV22xS Host Controller RAID10 Provides both Availability and performance Cluster Topology Scalable and high availability For added performance enable Write back...
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... Hot Plug - Ultra 320 (320MB/sec through put) Warm Plug - Basic Input Output System Cluster - RAID On Motherboard SCSI - B: Glossary Array - Power Edge RAID Controller RAID - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 8. Host Bus Adapter (non-RAID controllers) HDD - Redundant Array of Inexpensive Disks or Redundant Array of device with MSCS operating environment...
... Hot Plug - Ultra 320 (320MB/sec through put) Warm Plug - Basic Input Output System Cluster - RAID On Motherboard SCSI - B: Glossary Array - Power Edge RAID Controller RAID - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 8. Host Bus Adapter (non-RAID controllers) HDD - Redundant Array of Inexpensive Disks or Redundant Array of device with MSCS operating environment...
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D: Revision History VER A02 Revision Description Date Modified By A00 First Release 04/28/2005 SCSI Storage Solution Team A01 Updated "™" and "®" information where applicable 05/06/2005 Samit Ashdhir Updated requirement for controllers to be attached to PV22xS in Split and Cluster A02 Topologies (Section 4) Updated with brief on "Hardware Vs Software RAID" (Section 5) 11/17/2005 SCSI Storage Solution Team Updated "Drive Roaming" and "Patrol Read" (Section 5) PAGE 44 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS 10. Appendix -
D: Revision History VER A02 Revision Description Date Modified By A00 First Release 04/28/2005 SCSI Storage Solution Team A01 Updated "™" and "®" information where applicable 05/06/2005 Samit Ashdhir Updated requirement for controllers to be attached to PV22xS in Split and Cluster A02 Topologies (Section 4) Updated with brief on "Hardware Vs Software RAID" (Section 5) 11/17/2005 SCSI Storage Solution Team Updated "Drive Roaming" and "Patrol Read" (Section 5) PAGE 44 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS 10. Appendix -