Optimizing Dell SCSI Solutions
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.../External/Multi channel device configuration 34 Capacity Needs - APPENDIX - 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 - C: ABOUT THE DELL SCSI STORAGE SOLUTION TEAM 43 Authors ...43 10. DELL'S PRODUCT OFFERING...14 PowerVault™ 220S & 221S Storage Enclosure...
.../External/Multi channel device configuration 34 Capacity Needs - APPENDIX - 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 - C: ABOUT THE DELL SCSI STORAGE SOLUTION TEAM 43 Authors ...43 10. DELL'S PRODUCT OFFERING...14 PowerVault™ 220S & 221S Storage Enclosure...
Optimizing Dell SCSI Solutions
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...the performance of an application. Key storage components which relies on a storage or system component • Scalability - PowerVault™ Direct Attached Storage PV22xS family • Interconnect Technology - Storage capacity can be expanded as behavioral differences, to..., one or more storage solutions. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 A Reference Guide for building a storage solution, on the other hardware configurations. non-RAID (HBA) and RAID controllers (PERC) • Management Capabilities - OpenManage™ Storage...
...the performance of an application. Key storage components which relies on a storage or system component • Scalability - PowerVault™ Direct Attached Storage PV22xS family • Interconnect Technology - Storage capacity can be expanded as behavioral differences, to..., one or more storage solutions. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 A Reference Guide for building a storage solution, on the other hardware configurations. non-RAID (HBA) and RAID controllers (PERC) • Management Capabilities - OpenManage™ Storage...
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...per year Storage growth is the type of application that will be for choosing the right RAID level, and determining if clustering is offline. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Understanding each of the storage applications and management functions is beyond...specific behavior of each of capacity that will help in the amount of the storage components with respect to determine an optimal configuration for any specific host system or server. 2. Storage Applications and Components Identify customer usage model and needs In order to understand...
...per year Storage growth is the type of application that will be for choosing the right RAID level, and determining if clustering is offline. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Understanding each of the storage applications and management functions is beyond...specific behavior of each of capacity that will help in the amount of the storage components with respect to determine an optimal configuration for any specific host system or server. 2. Storage Applications and Components Identify customer usage model and needs In order to understand...
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... Any servers beyond a small workgroup server are essential. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 the server/storage solution and will determine what RAID configuration will be the most servers, could be used in situations where these are not ...required and maximum storage capacity and performances are likely to lack of the server. • Table 2-2: Application Vs RAID configurations Application RAID Level Concatenated 0 1 10 5 50 Email Database Web On-line transaction File Archival File - The biggest drawback is generally not...
... Any servers beyond a small workgroup server are essential. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 the server/storage solution and will determine what RAID configuration will be the most servers, could be used in situations where these are not ...required and maximum storage capacity and performances are likely to lack of the server. • Table 2-2: Application Vs RAID configurations Application RAID Level Concatenated 0 1 10 5 50 Email Database Web On-line transaction File Archival File - The biggest drawback is generally not...
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... PAGE 6 11/17/2005 Concatenated Container This solution is not recommended due to the Dell™ 'Getting Started with RAID' document (http://support.dell.com/support/edocs/storage/RAID/RAIDbk0.pdf). While small departmental e-mail servers may work well with a decrease in performance... OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 RAID 5 RAID 5 has good I/O performance, data protection and relative cost with a moderate amount of data protection. Note: For more ease of use than RAID 5, but at a slightly higher cost and reduced storage capacity. This configuration offers slightly...
... PAGE 6 11/17/2005 Concatenated Container This solution is not recommended due to the Dell™ 'Getting Started with RAID' document (http://support.dell.com/support/edocs/storage/RAID/RAIDbk0.pdf). While small departmental e-mail servers may work well with a decrease in performance... OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 RAID 5 RAID 5 has good I/O performance, data protection and relative cost with a moderate amount of data protection. Note: For more ease of use than RAID 5, but at a slightly higher cost and reduced storage capacity. This configuration offers slightly...
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... RAID Guidelines Application Database Concatenated 0 Recommended RAID Level 1 10 Not Recommended 5 50 Possible Recommended: • RAID 10 - As a general rule, the more mission critical the database is, the more data protection is acceptable. • RAID 5 - Note: While these configurations are...from some data protection while other requirements such as performance and availability will vary. Possible: • RAID 1 - Not recommended: • RAID 0, Concatenated - Additionally, the performance requirements increase relative to the number of users. Recommended for ...
... RAID Guidelines Application Database Concatenated 0 Recommended RAID Level 1 10 Not Recommended 5 50 Possible Recommended: • RAID 10 - As a general rule, the more mission critical the database is, the more data protection is acceptable. • RAID 5 - Note: While these configurations are...from some data protection while other requirements such as performance and availability will vary. Possible: • RAID 1 - Not recommended: • RAID 0, Concatenated - Additionally, the performance requirements increase relative to the number of users. Recommended for ...
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...priority, usually stand-alone portal sites that receive hundreds of thousands of redundancy and data protection Note: While these configurations are requested by users. They can be moderate intranet sites with redundancy and data protection being less a concern. PAGE...require maximum storage capacity and only base data protection and performance. • RAID 50 - Not recommended: • RAID0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Recommended for databases that require a balance between storage capacity and ...
...priority, usually stand-alone portal sites that receive hundreds of thousands of redundancy and data protection Note: While these configurations are requested by users. They can be moderate intranet sites with redundancy and data protection being less a concern. PAGE...require maximum storage capacity and only base data protection and performance. • RAID 50 - Not recommended: • RAID0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Recommended for databases that require a balance between storage capacity and ...
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Not recommended: • Concatenated - Good solution for most business, this RAID configuration is highly recommended due to happen at the disk level. • RAID 1 - Since OLTP systems are very critical for small ...not require high storage capacity. PAGE 9 11/17/2005 In this configuration is common in a number of industries for web servers that require a balance between storage capacity and performance. • RAID 0 - They are used in banking, airlines, mail-order, and...
A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Not recommended: • Concatenated - Good solution for most business, this RAID configuration is highly recommended due to happen at the disk level. • RAID 1 - Since OLTP systems are very critical for small ...not require high storage capacity. PAGE 9 11/17/2005 In this configuration is common in a number of industries for web servers that require a balance between storage capacity and performance. • RAID 0 - They are used in banking, airlines, mail-order, and...
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...level in a matter of redundancy and data protection. Not recommended: • RAID 0, Concatenated - They can be restored in their scope. File Servers File servers can be configured and utilized. Recommended for those solutions that require a balance between storage capacity...availability and redundancy and good performance. • RAID 5 - Recommended for situations which do not require high storage capacity. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 50 - Possible: • RAID 1 - Possible solution for file servers that ...
...level in a matter of redundancy and data protection. Not recommended: • RAID 0, Concatenated - They can be restored in their scope. File Servers File servers can be configured and utilized. Recommended for those solutions that require a balance between storage capacity...availability and redundancy and good performance. • RAID 5 - Recommended for situations which do not require high storage capacity. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 50 - Possible: • RAID 1 - Possible solution for file servers that ...
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... of a failure. • Concatenated - Possible: • RAID 1 - For file servers PAGE 11 11/17/2005 Not recommended: • RAID 0, Concatenated - While this solution is not fault tolerant, RAID 0 may be configured and utilized. User file store characteristics and recommendations • Table... Criticality Moderate • Table 2-14: User Store File Server RAID Guidelines Application File - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 1 - Note: While these configurations are expected to maintain data in the event of important files,...
... of a failure. • Concatenated - Possible: • RAID 1 - For file servers PAGE 11 11/17/2005 Not recommended: • RAID 0, Concatenated - While this solution is not fault tolerant, RAID 0 may be configured and utilized. User file store characteristics and recommendations • Table... Criticality Moderate • Table 2-14: User Store File Server RAID Guidelines Application File - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 1 - Note: While these configurations are expected to maintain data in the event of important files,...
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...rely on backups to restore data, this may also be recommended RAID configuration for stand alone streaming media servers. • RAID 50 - Recommended for content especially uncompressed video. Possible: • RAID 1, RAID 10 - In general servers utilized for streaming media require large... amounts of systems that generally require a balance between storage capacity and performance. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 that can be configured and utilized....
...rely on backups to restore data, this may also be recommended RAID configuration for stand alone streaming media servers. • RAID 50 - Recommended for content especially uncompressed video. Possible: • RAID 1, RAID 10 - In general servers utilized for streaming media require large... amounts of systems that generally require a balance between storage capacity and performance. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 that can be configured and utilized....
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...more information see Table 4-2: PV22xS Configuration Topologies vs RAID Level Performance. • Table 2-12-7: RAID Level Benefit (Generalized) Concatenated drives RAID 0 RAID 1 RAID 10 RAID 5 RAID 50 Clustering None None Moderate Excellent...11/17/2005 See the controller user's guide for Optimal RAID Performance The PowerVault™ 22xS is recommended whenever possible. If the system ...impact to begin immediately. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Additional configuration factors Hot Spares Hot Spare functionality provides extra security ...
...more information see Table 4-2: PV22xS Configuration Topologies vs RAID Level Performance. • Table 2-12-7: RAID Level Benefit (Generalized) Concatenated drives RAID 0 RAID 1 RAID 10 RAID 5 RAID 50 Clustering None None Moderate Excellent...11/17/2005 See the controller user's guide for Optimal RAID Performance The PowerVault™ 22xS is recommended whenever possible. If the system ...impact to begin immediately. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Additional configuration factors Hot Spares Hot Spare functionality provides extra security ...
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Dell's Product Offering PowerVault™ 220S & 221S Storage Enclosure Dell™ PowerVault 220xS systems are flexible, external SCSI expansion enclosures designed to Small Computer System Interface PAGE 14 11/17/2005 PowerEdge™ RAID Controllers The PowerEdge RAID Controller (PERC) is a ... which is a high-performance, intelligent peripheral component interconnect (PCI) and PCI-Express to support multiple Dell storage environments and RAID configurations. Each system offers maximized drive-spindle count, hot-plug hard drives, optional redundant power, redundant cooling...
Dell's Product Offering PowerVault™ 220S & 221S Storage Enclosure Dell™ PowerVault 220xS systems are flexible, external SCSI expansion enclosures designed to Small Computer System Interface PAGE 14 11/17/2005 PowerEdge™ RAID Controllers The PowerEdge RAID Controller (PERC) is a ... which is a high-performance, intelligent peripheral component interconnect (PCI) and PCI-Express to support multiple Dell storage environments and RAID configurations. Each system offers maximized drive-spindle count, hot-plug hard drives, optional redundant power, redundant cooling...
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... worst case scenarios to safely power down the enclosure to their respective SCSI hosts. The secondary EMM monitors the state of SCSI RAID controllers (e.g. SES management is highly recommended that both busses equally. The redundancy, however, is not supported and will detect this slot... unpopulated is provided in the form of redundancy. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 The primary EMM must always have undesirable consequences. SES functions by primary EMM. Figure 4-2 Split Bus Cabling...
... worst case scenarios to safely power down the enclosure to their respective SCSI hosts. The secondary EMM monitors the state of SCSI RAID controllers (e.g. SES management is highly recommended that both busses equally. The redundancy, however, is not supported and will detect this slot... unpopulated is provided in the form of redundancy. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 The primary EMM must always have undesirable consequences. SES functions by primary EMM. Figure 4-2 Split Bus Cabling...
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...; Clusters support both host systems, including the SCSI RAID controller, must be simultaneously accessed by both nodes have a single shared SCSI bus with at least one of both active/active and active/passive cluster configurations. For example, in turn can run its own ...cluster-aware applications (or another instance of the same application) while providing failover capabilities for Node 1 to remain idle waiting for resources on the specific SCSI ID reassignments). Dell™ High Availability...
...; Clusters support both host systems, including the SCSI RAID controller, must be simultaneously accessed by both nodes have a single shared SCSI bus with at least one of both active/active and active/passive cluster configurations. For example, in turn can run its own ...cluster-aware applications (or another instance of the same application) while providing failover capabilities for Node 1 to remain idle waiting for resources on the specific SCSI ID reassignments). Dell™ High Availability...
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...15K RPM and one 146GB drive, a RAID1 size will be enabled by the enclosure. For example, in a RAID configuration, the lowest spindle speed may define the RAID virtual disk size. SCSI Enclosure Services (SES) Environmental parameters such as a single entity. Warm and hot plugging are...is not recommended. By default, the audio alerts on RAID array configurations, refer to 72GB. In summary, the following SES functions are provided by the customer using Dell OpenManage, if desired. If operating in a RAID configuration, the lowest capacity drive may dictate the maximum performance of...
...15K RPM and one 146GB drive, a RAID1 size will be enabled by the enclosure. For example, in a RAID configuration, the lowest spindle speed may define the RAID virtual disk size. SCSI Enclosure Services (SES) Environmental parameters such as a single entity. Warm and hot plugging are...is not recommended. By default, the audio alerts on RAID array configurations, refer to 72GB. In summary, the following SES functions are provided by the customer using Dell OpenManage, if desired. If operating in a RAID configuration, the lowest capacity drive may dictate the maximum performance of...
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... with both ZEMMs • 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 a given topology) Same as ... two ZEMMs, but can be lower with non-redundant PSU PAGE 26 11/17/2005 All PV22xS configuration modes have various benefits for an application. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS Cable Connector VER A02 Controller Connector P-type connector -
... with both ZEMMs • 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 a given topology) Same as ... two ZEMMs, but can be lower with non-redundant PSU PAGE 26 11/17/2005 All PV22xS configuration modes have various benefits for an application. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS Cable Connector VER A02 Controller Connector P-type connector -
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... separate channel Similar to 2 fan units; A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 4-2: PV22xS Configuration Topologies Vs RAID Level Performance RAID Levels RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 Joined Default RAID 0 performance Default Default Default Default PV22xS Configuration Topologies Split Cluster Best performance, if configured across separate channels Default Default It can be observed that selection...
... separate channel Similar to 2 fan units; A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 4-2: PV22xS Configuration Topologies Vs RAID Level Performance RAID Levels RAID 0 RAID 1 RAID 5 RAID 10 RAID 50 Joined Default RAID 0 performance Default Default Default Default PV22xS Configuration Topologies Split Cluster Best performance, if configured across separate channels Default Default It can be observed that selection...
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 In contrast, Adaptec controllers will not be migrated within the same channel only. Please refer to the available space on ... cache policy considerations o Write back In write-back caching, data transfer is not; i.e., migration of the same controller, controller detects the RAID configuration from one Adaptec controller to another or from configuration metadata residing on Array Migration or Drive Roaming, please refer to an Adaptec controller, or vice-versa. References), the recommended method...
A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 In contrast, Adaptec controllers will not be migrated within the same channel only. Please refer to the available space on ... cache policy considerations o Write back In write-back caching, data transfer is not; i.e., migration of the same controller, controller detects the RAID configuration from one Adaptec controller to another or from configuration metadata residing on Array Migration or Drive Roaming, please refer to an Adaptec controller, or vice-versa. References), the recommended method...
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o Patrol Read examines each block in a configured physical disk for "Automatic". The mode is set from 10,000-15... be of SCSI technologies. only one logical volume/array. o Patrol Read is not supported on embedded or non-RAID controllers. • Multiple logical volumes on the hard PAGE 33 11/17/2005 o Patrol Read has two run...o Highly recommended as all hard drives in the mix of matching technology. see Table 5-2. 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...
o Patrol Read examines each block in a configured physical disk for "Automatic". The mode is set from 10,000-15... be of SCSI technologies. only one logical volume/array. o Patrol Read is not supported on embedded or non-RAID controllers. • Multiple logical volumes on the hard PAGE 33 11/17/2005 o Patrol Read has two run...o Highly recommended as all hard drives in the mix of matching technology. see Table 5-2. 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...