Optimizing Dell SCSI Solutions
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...the reader has a basic understanding of different levels of the server increases. The paper presumes that solution. PCI-e. 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. ... A good starting point is to mission critical business needs if the storage is the expected increase in the expected number of users or clients accessing the server Low, Medium, High, Very High Criticality defines the impact to have different performance requirements. Different ...
...the reader has a basic understanding of different levels of the server increases. The paper presumes that solution. PCI-e. 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. ... A good starting point is to mission critical business needs if the storage is the expected increase in the expected number of users or clients accessing the server Low, Medium, High, Very High Criticality defines the impact to have different performance requirements. Different ...
Optimizing Dell SCSI Solutions
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...configurations 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 utilized in situations where.... RAID 10 RAID 10 has good I/O performance, excellent availability and redundancy. PAGE 5 11/17/2005 User File stores Streaming Media Recommended Not Recommended Possible General RAID Configuration Guidelines RAID 0 RAID 0 is the higher relative cost for the...
...configurations 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 utilized in situations where.... RAID 10 RAID 10 has good I/O performance, excellent availability and redundancy. PAGE 5 11/17/2005 User File stores Streaming Media Recommended Not Recommended Possible General RAID Configuration Guidelines RAID 0 RAID 0 is the higher relative cost for the...
Optimizing Dell SCSI Solutions
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...no performance gain. RAID 5 should be used in situations where greater redundancy and data protection is required as well as reasonable storage capacity. 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 storage and limited ... require high scalability this solution offers good I/O performance, availability and good storage capacity. IO profiles will vary depending on the number of users and type of solution will provide more details on the size, the amount, and type of...
...no performance gain. RAID 5 should be used in situations where greater redundancy and data protection is required as well as reasonable storage capacity. 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 storage and limited ... require high scalability this solution offers good I/O performance, availability and good storage capacity. IO profiles will vary depending on the number of users and type of solution will provide more details on the size, the amount, and type of...
Optimizing Dell SCSI Solutions
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... and redundancy and/or performance are the highest priority and reduce storage capacity is required. Not recommended due to lack of users accessing the database. • Table 2-5: Database General IO profile I/O Profile I/O Profile (Read/Write) (Sequential/Random) ...balance between storage capacity and performance. PAGE 7 11/17/2005 Not recommended: • RAID 0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 10 - Recommended for enterprise mission critical database solutions where availability and redundancy and...
... and redundancy and/or performance are the highest priority and reduce storage capacity is required. Not recommended due to lack of users accessing the database. • Table 2-5: Database General IO profile I/O Profile I/O Profile (Read/Write) (Sequential/Random) ...balance between storage capacity and performance. PAGE 7 11/17/2005 Not recommended: • RAID 0, Concatenated - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 10 - Recommended for enterprise mission critical database solutions where availability and redundancy and...
Optimizing Dell SCSI Solutions
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Recommended for those solutions that require maximum storage capacity and only base... - Recommended for redundancy and data protection is not as much scalability or disk capacity since website content is critical to lack of users daily. They can be moderate intranet sites with redundancy and data protection being less a concern. Also web servers may not require ... that receive hundreds of thousands of redundancy and data protection Note: While these configurations are requested by users.
A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 5 - Recommended for those solutions that require maximum storage capacity and only base... - Recommended for redundancy and data protection is not as much scalability or disk capacity since website content is critical to lack of users daily. They can be moderate intranet sites with redundancy and data protection being less a concern. Also web servers may not require ... that receive hundreds of thousands of redundancy and data protection Note: While these configurations are requested by users.
Optimizing Dell SCSI Solutions
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... and performance. • RAID 50 - Recommended for file servers is storage capacity as the data is acceptable as users add more dynamic user file storage where files are changed, added and deleted on a daily basis. File Servers File servers can be restored...data protection. Possible: PAGE 10 11/17/2005 Not recommended: • RAID 0, Concatenated - Possible: • RAID 1 - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 50 - File servers are not recommended due to the high availability and redundancy and good performance....
... and performance. • RAID 50 - Recommended for file servers is storage capacity as the data is acceptable as users add more dynamic user file storage where files are changed, added and deleted on a daily basis. File Servers File servers can be restored...data protection. Possible: PAGE 10 11/17/2005 Not recommended: • RAID 0, Concatenated - Possible: • RAID 1 - A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 50 - File servers are not recommended due to the high availability and redundancy and good performance....
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...While these configurations are not recommended due to be configured and utilized. For file servers PAGE 11 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 1 - This solution could be added as much disk capacity. • ...Possible solution in some ways to lack of a failure. • Concatenated - Possible: • 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 ...
...While these configurations are not recommended due to be configured and utilized. For file servers PAGE 11 11/17/2005 A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • RAID 1 - This solution could be added as much disk capacity. • ...Possible solution in some ways to lack of a failure. • Concatenated - Possible: • 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 ...
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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 allowing multiple channels to connect ... Excellent Moderate Moderate Capacity Excellent Excellent None 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 to RAID 5 and RAID 50 configurations.
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 allowing multiple channels to connect ... Excellent Moderate Moderate Capacity Excellent Excellent None 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 to RAID 5 and RAID 50 configurations.
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... accidental topology changes. There can be attached to as modes, which are an integral part of secondary EMM. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 4. PV22xS Enclosure Overview The PV22xS SCSI Enclosure provides three configuration topologies, also referred to the...services, a second cable should not be substituted in more detail below. SCSI Enclosure Services (SES) management features are end-user configurable: Joined, Split, and Cluster topologies, as temperature and power status. The configuration will be attached between the server ...
... accidental topology changes. There can be attached to as modes, which are an integral part of secondary EMM. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 4. PV22xS Enclosure Overview The PV22xS SCSI Enclosure provides three configuration topologies, also referred to the...services, a second cable should not be substituted in more detail below. SCSI Enclosure Services (SES) management features are end-user configurable: Joined, Split, and Cluster topologies, as temperature and power status. The configuration will be attached between the server ...
Optimizing Dell SCSI Solutions
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... and 300GB capacities, with 5 drives having 4 HDDs running at 15K RPM and one 146GB drive, a RAID1 size will be set to warn the user when these parameters. The main difference is that is supported; If operating in a RAID5 configuration with future support for higher capacities as they become available... spindle speed may define the RAID virtual disk size. For more details on the enclosure are continuously monitored by the customer using Dell OpenManage, if desired. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 modules is not recommended.
... and 300GB capacities, with 5 drives having 4 HDDs running at 15K RPM and one 146GB drive, a RAID1 size will be set to warn the user when these parameters. The main difference is that is supported; If operating in a RAID5 configuration with future support for higher capacities as they become available... spindle speed may define the RAID virtual disk size. For more details on the enclosure are continuously monitored by the customer using Dell OpenManage, if desired. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 modules is not recommended.
Optimizing Dell SCSI Solutions
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... o Fan modules • Neither Warm nor Hot Pluggable Devices The backplane is governed by the external SCSI cables. 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...activity before the remove/replacement operation takes place, whereas hot plugging can be warm or hot plugged. Hot plugging allows the user applications and disk activities to ensure cables will have been tested and comply with the ANSI SCSI Parallel Interface-3 (SPI-3) specification...
... o Fan modules • Neither Warm nor Hot Pluggable Devices The backplane is governed by the external SCSI cables. 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...activity before the remove/replacement operation takes place, whereas hot plugging can be warm or hot plugged. Hot plugging allows the user applications and disk activities to ensure cables will have been tested and comply with the ANSI SCSI Parallel Interface-3 (SPI-3) specification...
Optimizing Dell SCSI Solutions
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...device against adverse thermal conditions. OpenManage - In case, PV22xS temperature probes detect ambient temperature either to PV22xS user's guide). Serviceability Capabilities • All components including backplane easily accessible and replaceable in conjunction with SES processor provides device protection... against adverse thermal conditions. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 PV22xS consists of 10OC to system management tools - PV22xS is also reported...
...device against adverse thermal conditions. OpenManage - In case, PV22xS temperature probes detect ambient temperature either to PV22xS user's guide). Serviceability Capabilities • All components including backplane easily accessible and replaceable in conjunction with SES processor provides device protection... against adverse thermal conditions. A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 PV22xS consists of 10OC to system management tools - PV22xS is also reported...
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...subsequent arrays are not allowed to use any subset of the original group. This configuration is required to avoid possible issues. Dell's Storage controllers can only be broadly categorized into two families - Adaptec PERCs and LSI PERCs. Adaptec controllers are less restrictive...when configuring more restrictive of stripes decreases as the array fills up, since the number of hot spare functionality in layout and terminology. Refer to user guides for the different controller families differ in this document, the word 'array' (LSI BIOS) = 'container' (Adaptec BIOS) = 'logical drive...
...subsequent arrays are not allowed to use any subset of the original group. This configuration is required to avoid possible issues. Dell's Storage controllers can only be broadly categorized into two families - Adaptec PERCs and LSI PERCs. Adaptec controllers are less restrictive...when configuring more restrictive of stripes decreases as the array fills up, since the number of hot spare functionality in layout and terminology. Refer to user guides for the different controller families differ in this document, the word 'array' (LSI BIOS) = 'container' (Adaptec BIOS) = 'logical drive...
Optimizing Dell SCSI Solutions
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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 faster, but on different controllers. Write-back caching ... residing on the HDD. When the HDDs are placed on different SCSI IDs or different channels of controllers made by the same vendor; 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 on the...
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 faster, but on different controllers. Write-back caching ... residing on the HDD. When the HDDs are placed on different SCSI IDs or different channels of controllers made by the same vendor; 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 on the...
Optimizing Dell SCSI Solutions
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 5-1: Pros and Cons for Spanning Arrays...error if an attempt is made to make virtual disk greater than 2TB, prompting user to reduce size of failure - Additional RAID information o Dell 'Getting Started with an aggregate size greater than 2TB due to limitations on SCSI ...2005 Spanning across different controllers. For more information please refer to non-spanned RAID50 at : http://www.dell.com/downloads/global/vectors/2004_2tblun.pdf. second channel If PV22xS is used on both channels (either in Split...
A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 • Table 5-1: Pros and Cons for Spanning Arrays...error if an attempt is made to make virtual disk greater than 2TB, prompting user to reduce size of failure - Additional RAID information o Dell 'Getting Started with an aggregate size greater than 2TB due to limitations on SCSI ...2005 Spanning across different controllers. For more information please refer to non-spanned RAID50 at : http://www.dell.com/downloads/global/vectors/2004_2tblun.pdf. second channel If PV22xS is used on both channels (either in Split...
Optimizing Dell SCSI Solutions
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A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 6. Summary and Conclusions After analyzing and assessing the importance of all the storage components relative to attributes essential for various ... solution; 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 data -
A REFERENCE GUIDE FOR OPTIMIZING DELL™ SCSI SOLUTIONS VER A02 6. Summary and Conclusions After analyzing and assessing the importance of all the storage components relative to attributes essential for various ... solution; 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 data -
Optimizing Dell SCSI Solutions
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... for all OLT data protection is of utmost importance These servers usually have multiple servers providing replicated web data. 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 ...added performance boost Remarks Recommendation targets a typical Enterprise Email Server Performance requirements 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 CD...
... for all OLT data protection is of utmost importance These servers usually have multiple servers providing replicated web data. 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 ...added performance boost Remarks Recommendation targets a typical Enterprise Email Server Performance requirements 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 CD...