Optimizing Dell SCSI Solutions
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...impact to determine an optimal configuration 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 the scope of this document...of capacity that solution. however, specific behavior of each of the storage components with respect to these attributes will be for 100 users would have • Latency mostly sequential disk access. For example, a database or e-mail server has mostly random disk access ...
...impact to determine an optimal configuration 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 the scope of this document...of capacity that solution. however, specific behavior of each of the storage components with respect to these attributes will be for 100 users would have • Latency mostly sequential disk access. For example, a database or e-mail server has mostly random disk access ...
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...workgroup server are the priority considerations. RAID 1 A RAID 1 solution, while not ideal for most optimal for the application. User File stores Streaming Media Recommended Not Recommended Possible General RAID Configuration Guidelines RAID 0 RAID 0 is the higher relative cost for ... Application RAID Level Concatenated 0 1 10 5 50 Email Database Web On-line transaction File Archival File - 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...
...workgroup server are the priority considerations. RAID 1 A RAID 1 solution, while not ideal for most optimal for the application. User File stores Streaming Media Recommended Not Recommended Possible General RAID Configuration Guidelines RAID 0 RAID 0 is the higher relative cost for ... Application RAID Level Concatenated 0 1 10 5 50 Email Database Web On-line transaction File Archival File - 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...
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... RAID 5 and RAID 10, this type of solution will vary depending on the size, the amount, and type of users. RAID 5 should be used in performance and data protection. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 RAID 5 RAID 5 has good I/O performance, data protection and relative cost with a small amount of...
... RAID 5 and RAID 10, this type of solution will vary depending on the size, the amount, and type of users. RAID 5 should be used in performance and data protection. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 RAID 5 RAID 5 has good I/O performance, data protection and relative cost with a small amount of...
Optimizing Dell SCSI Solutions
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... balance between storage capacity and performance. Not recommended due to mission critical enterprise databases like Microsoft® Access with thousands of users accessing the database. • Table 2-5: Database General IO profile I/O Profile I/O Profile (Read/Write) (Sequential/Random) Bandwidth ..., the performance requirements increase relative to the number of users. As a general rule, the more mission critical the database is, the more data protection is acceptable. • RAID 5 - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 10 ...
... balance between storage capacity and performance. Not recommended due to mission critical enterprise databases like Microsoft® Access with thousands of users accessing the database. • Table 2-5: Database General IO profile I/O Profile I/O Profile (Read/Write) (Sequential/Random) Bandwidth ..., the performance requirements increase relative to the number of users. As a general rule, the more mission critical the database is, the more data protection is acceptable. • RAID 5 - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 10 ...
Optimizing Dell SCSI Solutions
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... 5 50 Possible Recommended: • RAID 10 - Recommended for redundancy and data protection is relatively static and changes are requested by users. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Performance is critical to lack of redundancy and data protection Note: While these... with minimal traffic internal company traffic or global internet portal sites that receive hundreds of thousands of users daily. Recommended for small databases which do not require high storage capacity. Not recommended due to the organization's business.
... 5 50 Possible Recommended: • RAID 10 - Recommended for redundancy and data protection is relatively static and changes are requested by users. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Performance is critical to lack of redundancy and data protection Note: While these... with minimal traffic internal company traffic or global internet portal sites that receive hundreds of thousands of users daily. Recommended for small databases which do not require high storage capacity. Not recommended due to the organization's business.
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...and utilized. They can be archival long term storage repositories or more files. A key factor for file servers is storage capacity as users add more dynamic user file storage where files are generally not mission critical systems so reduced availability and redundancy or none at all is acceptable as the data...File Servers File servers can range from workgroup to the high availability and redundancy and good performance. • RAID 5 - Not recommended: • RAID 0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 50 -
...and utilized. They can be archival long term storage repositories or more files. A key factor for file servers is storage capacity as users add more dynamic user file storage where files are generally not mission critical systems so reduced availability and redundancy or none at all is acceptable as the data...File Servers File servers can range from workgroup to the high availability and redundancy and good performance. • RAID 5 - Not recommended: • RAID 0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 50 -
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... scalability as much disk capacity. • RAID 0 - Possible: • RAID 1 - Not recommended: • RAID 0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 1 - User file store characteristics and recommendations • Table 2-13 User Store File Server General IO profile I/O Profile I/O Profile (Read/Write) (Sequential/Random) Bandwidth 80/20 Sequential Heavy...
... scalability as much disk capacity. • RAID 0 - Possible: • RAID 1 - Not recommended: • RAID 0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 1 - User file store characteristics and recommendations • Table 2-13 User Store File Server General IO profile I/O Profile I/O Profile (Read/Write) (Sequential/Random) Bandwidth 80/20 Sequential Heavy...
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... None Moderate Moderate Scalability Excellent None None Excellent Moderate Moderate PAGE 13 11/17/2005 See the controller user's guide for Optimal RAID Performance The PowerVault™ 22xS is capable of the degraded array to begin immediately. Use of the SCSI bus. This...connect to the storage enclosure. If the system is to be clustered RAID 10 is recommended whenever possible. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Additional configuration factors Hot Spares Hot Spare functionality provides extra security availability and redundancy by ...
... None Moderate Moderate Scalability Excellent None None Excellent Moderate Moderate PAGE 13 11/17/2005 See the controller user's guide for Optimal RAID Performance The PowerVault™ 22xS is capable of the degraded array to begin immediately. Use of the SCSI bus. This...connect to the storage enclosure. If the system is to be clustered RAID 10 is recommended whenever possible. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 Additional configuration factors Hot Spares Hot Spare functionality provides extra security availability and redundancy by ...
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... one shared SCSI bus. If operating with two EMM modules, which are an integral part of secondary EMM. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 4. SES provides a unique set of operation providing access to the secondary EMM. PV22xS Enclosure...attached between the server and the primary Enclosure Management Module (EMM) in Figure 4-1. SCSI Enclosure Services (SES) management features are end-user configurable: Joined, Split, and Cluster topologies, as temperature and power status. Attaching a second cable is not required, a Terminator module...
... one shared SCSI bus. If operating with two EMM modules, which are an integral part of secondary EMM. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 4. SES provides a unique set of operation providing access to the secondary EMM. PV22xS Enclosure...attached between the server and the primary Enclosure Management Module (EMM) in Figure 4-1. SCSI Enclosure Services (SES) management features are end-user configurable: Joined, Split, and Cluster topologies, as temperature and power status. Attaching a second cable is not required, a Terminator module...
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... module. Mixing HDD Spindle Speeds Mixing of components while the power is not supported. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 modules is still on. For example, with Dell OpenManage™ to power down the enclosure when they become available. On a RAID0 array size ...will be set to warn the user when these parameters exceed safe operating levels, and to take specific action ...
... module. Mixing HDD Spindle Speeds Mixing of components while the power is not supported. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 modules is still on. For example, with Dell OpenManage™ to power down the enclosure when they become available. On a RAID0 array size ...will be set to warn the user when these parameters exceed safe operating levels, and to take specific action ...
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...hot plugged. PERC3 and PERC4 series controllers use the HD connector. Hot plugging allows the user applications and disk activities to -VHDCI. All PV22xS SCSI cables purchased from Dell have either an HD or VHDCI connector. One is the Very High Density Cable Interconnect (... that produces different quality levels of the PV22xS enclosure. PAGE 25 11/17/2005 Both are actually differences in Figure 4-7. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 properly quiescent before the hardware is removed/replaced. • Warm Pluggable Devices o EMM module o SBM...
...hot plugged. PERC3 and PERC4 series controllers use the HD connector. Hot plugging allows the user applications and disk activities to -VHDCI. All PV22xS SCSI cables purchased from Dell have either an HD or VHDCI connector. One is the Very High Density Cable Interconnect (... that produces different quality levels of the PV22xS enclosure. PAGE 25 11/17/2005 Both are actually differences in Figure 4-7. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 properly quiescent before the hardware is removed/replaced. • Warm Pluggable Devices o EMM module o SBM...
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...for visual status reporting on internal components • Audible alarm to notify critical/non-critical status (for details refer to OpenManage user's guide) PAGE 28 11/17/2005 Status is designed to 35OC. Once the temperature probe detects ambient temperature to be at ambient ... the device against adverse thermal conditions. OMSM or Array manager (for details please refer to system management tools - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 PV22xS consists of four digital temperature probes, which would then initiate a thermal shut down process....
...for visual status reporting on internal components • Audible alarm to notify critical/non-critical status (for details refer to OpenManage user's guide) PAGE 28 11/17/2005 Status is designed to 35OC. Once the temperature probe detects ambient temperature to be at ambient ... the device against adverse thermal conditions. OMSM or Array manager (for details please refer to system management tools - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 PV22xS consists of four digital temperature probes, which would then initiate a thermal shut down process....
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... confusion. If redundant and non-redundant arrays are placed on the same group of these differences are transparent to the user, when using the recommended Dell OpenManage™ software to avoid possible issues. This can be created on LSI controllers only o When mixing drive sizes... once an array is used by these differences can only be broadly categorized into two families - subsequent arrays are not allowed to user guides for the different controller families differ in this regard. o Similarly LSI controllers are more complex storage strategies/solutions. Refer to use ...
... confusion. If redundant and non-redundant arrays are placed on the same group of these differences are transparent to the user, when using the recommended Dell OpenManage™ software to avoid possible issues. This can be created on LSI controllers only o When mixing drive sizes... once an array is used by these differences can only be broadly categorized into two families - subsequent arrays are not allowed to user guides for the different controller families differ in this regard. o Similarly LSI controllers are more complex storage strategies/solutions. Refer to use ...
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... Rebuild o As stated in controller NVRAM and on-disk. o For additional information on Array Migration or Drive Roaming, please refer to the User Guide for the controller. • Write cache policy considerations o Write back In write-back caching, data transfer is supported for Direct Attached SCSI Solutions..., IO profile, system load, PERC family, For more details on the rebuild process please refer to Appendix A - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 In contrast, Adaptec controllers will only use space on all 'child' arrays equal to the available space...
... Rebuild o As stated in controller NVRAM and on-disk. o For additional information on Array Migration or Drive Roaming, please refer to the User Guide for the controller. • Write cache policy considerations o Write back In write-back caching, data transfer is supported for Direct Attached SCSI Solutions..., IO profile, system load, PERC family, For more details on the rebuild process please refer to Appendix A - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 In contrast, Adaptec controllers will only use space on all 'child' arrays equal to the available space...
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... size greater than 2TB due to limitations on the same PERC controller is made to make virtual disk greater than 2TB, prompting user to reduce size of virtual disk. Spanning across channels on SCSI controllers and operating systems. Host management application (OMSM, Array Manager...) will give an error if an attempt is only supported. 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 ...
... size greater than 2TB due to limitations on the same PERC controller is made to make virtual disk greater than 2TB, prompting user to reduce size of virtual disk. Spanning across channels on SCSI controllers and operating systems. Host management application (OMSM, Array Manager...) will give an error if an attempt is only supported. 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 ...
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.../2005 These additional factors include: • Data and power back-up strategies of an Enterprise IT • Storage deployment environment: o Number of active and passive users o Type of each actual storage solution will have additional factors which need to be considered before determining an optimum storage solution. Based on the effectiveness... also how the storage component is configured has direct impact on the study of each storage component relative to attributes essential for a storage solution; A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 6.
.../2005 These additional factors include: • Data and power back-up strategies of an Enterprise IT • Storage deployment environment: o Number of active and passive users o Type of each actual storage solution will have additional factors which need to be considered before determining an optimum storage solution. Based on the effectiveness... also how the storage component is configured has direct impact on the study of each storage component relative to attributes essential for a storage solution; A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 6.
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... minimum data protection from Storage components Performance is of utmost importance for DB servers depend on number of users Web server farms, usually have data backed up on external medias such as Tape libraries or optical medias... capabilities for added performance boost Remarks Recommendation targets a typical Enterprise Email Server Performance requirements 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 Parameters Email ...
... minimum data protection from Storage components Performance is of utmost importance for DB servers depend on number of users Web server farms, usually have data backed up on external medias such as Tape libraries or optical medias... capabilities for added performance boost Remarks Recommendation targets a typical Enterprise Email Server Performance requirements 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 Parameters Email ...