Getting Started Guide
Page 6
...the CDs that came with your rack solution describes how to install your system or at support.dell.com. Manageability and Serviceability Features • Efficient rack-mount designed storage system • Hot-pluggable drives • Four sensors for monitoring ambient temperatures • Over-temperature shutdown protection capability •...64 bit (2.6 kernel) • SUSE® Linux Enterprise Server V9.0 service pack 3 with Intel EM64T(2.6 kernel) For more information, refer to the Dell PowerVault MD Systems Support Matrix at support.dell.com. 4 Getting Started With Your System
...the CDs that came with your rack solution describes how to install your system or at support.dell.com. Manageability and Serviceability Features • Efficient rack-mount designed storage system • Hot-pluggable drives • Four sensors for monitoring ambient temperatures • Over-temperature shutdown protection capability •...64 bit (2.6 kernel) • SUSE® Linux Enterprise Server V9.0 service pack 3 with Intel EM64T(2.6 kernel) For more information, refer to the Dell PowerVault MD Systems Support Matrix at support.dell.com. 4 Getting Started With Your System
Hardware Owner's Manual
Page 29
... Hot slot has been failed because of an (125 ms) Spare In Use, or unrecoverable error, an incorrect Hot Spare Standby drive type or drive size, or by a physical disk. SMART uses this information to detect faults indicating the potential for physical disk failure. Table 2-1. ...If a disk drive rebuild fails because of a source drive failure or because the drive is too small, the user interface reports a failure of all attached drives and notifies users when a predicted failure is imminent so that a physical disk ...
... Hot slot has been failed because of an (125 ms) Spare In Use, or unrecoverable error, an incorrect Hot Spare Standby drive type or drive size, or by a physical disk. SMART uses this information to detect faults indicating the potential for physical disk failure. Table 2-1. ...If a disk drive rebuild fails because of a source drive failure or because the drive is too small, the user interface reports a failure of all attached drives and notifies users when a predicted failure is imminent so that a physical disk ...
Hardware Owner's Manual
Page 41
Disk migration with no existing physical disks - When inserting drives into the new destination storage array. NOTICE: Without the delay between drive insertions, the storage array can continue. NOTE: If the drive modules are not moved as a set of the following methods to move all of the physical disks from the same storage array...
Disk migration with no existing physical disks - When inserting drives into the new destination storage array. NOTICE: Without the delay between drive insertions, the storage array can continue. NOTE: If the drive modules are not moved as a set of the following methods to move all of the physical disks from the same storage array...
Hardware Owner's Manual
Page 88
... bus and a data bus for data that is used to respond, you start your system. cmos - Basic input/output system. British thermal unit. CD - CD drives use optical technology to the system. cm - The modules are mounted into a chassis that keeps a copy of information interpreted by your system by turning the...
... bus and a data bus for data that is used to respond, you start your system. cmos - Basic input/output system. British thermal unit. CD - CD drives use optical technology to the system. cm - The modules are mounted into a chassis that keeps a copy of information interpreted by your system by turning the...
Hardware Owner's Manual
Page 92
A base-16 numbering system, often used in programming to identify addresses in which a set of two drives. A host adapter implements communication between the system board and storage devices. Hertz. A keyboard is an input device, and a ...be "hot-pluggable," you must install or connect the appropriate host adapter. See also mirroring, striping, and RAID. Hz - ID - IDE - Integrated drive electronics. Provides simultaneous physical mirroring of physical disks stores data and an additional disks stores parity data. See also mirroring. internal processor cache - group - As...
A base-16 numbering system, often used in programming to identify addresses in which a set of two drives. A host adapter implements communication between the system board and storage devices. Hertz. A keyboard is an input device, and a ...be "hot-pluggable," you must install or connect the appropriate host adapter. See also mirroring, striping, and RAID. Hz - ID - IDE - Integrated drive electronics. Provides simultaneous physical mirroring of physical disks stores data and an additional disks stores parity data. See also mirroring. internal processor cache - group - As...
Hardware Owner's Manual
Page 96
... contain multiple logical disks. A standard for processor. A power source with the fdisk command. physical disk - A hard drive installed in protected mode. 96 Glossary Software written for increasing addressable memory by the number of arithmetic and logic functions. You... for local-bus implementation. An operating mode that is expressed as the number of data. An internal or external device, such as a diskette drive or keyboard, connected to run in the RAID enclosure. processor - protected mode - MSDOS cannot run on your system, the POST tests various ...
... contain multiple logical disks. A standard for processor. A power source with the fdisk command. physical disk - A hard drive installed in protected mode. 96 Glossary Software written for increasing addressable memory by the number of arithmetic and logic functions. You... for local-bus implementation. An operating mode that is expressed as the number of data. An internal or external device, such as a diskette drive or keyboard, connected to run in the RAID enclosure. processor - protected mode - MSDOS cannot run on your system, the POST tests various ...
Hardware Owner's Manual
Page 98
... same on each disk. SDRAM - An I/O port used by its 9-pin connector. SMP - A configuration of both hard-disk drive and tape storage devices that incorporate dedicated Fibre Channel connectivity between the servers and storage devices. A SAN bypasses traditional network bottlenecks and ... - SMART - Self-Monitoring Analysis and Reporting Technology. Allows physical disks to report errors and failures to identify it when you call Dell for technical support. Used to describe a system that allows a network manager to I /O bus interface with faster data transmission rates ...
... same on each disk. SDRAM - An I/O port used by its 9-pin connector. SMP - A configuration of both hard-disk drive and tape storage devices that incorporate dedicated Fibre Channel connectivity between the servers and storage devices. A SAN bypasses traditional network bottlenecks and ... - SMART - Self-Monitoring Analysis and Reporting Technology. Allows physical disks to report errors and failures to identify it when you call Dell for technical support. Used to describe a system that allows a network manager to I /O bus interface with faster data transmission rates ...
Hardware Owner's Manual
Page 100
... programs and operating systems to match the video adapter installed in combination with the desired number of wiring used to manage system resources-memory, disk drives, or printers, for video adapters with the appropriate video drivers and monitor capabilities). A program that provides (in the system. WH - UTP - VGA - A video adapter may...
... programs and operating systems to match the video adapter installed in combination with the desired number of wiring used to manage system resources-memory, disk drives, or printers, for video adapters with the appropriate video drivers and monitor capabilities). A program that provides (in the system. WH - UTP - VGA - A video adapter may...
MD3000i Support Matrix
Page 5
... is recommended while mounting LUNs on linux operating systems. Disk Groups can be migrated between a Dell PowerVault MD3000 and a Dell PowerVault MD3000i by the type of RAID group, number of drives in the RAID group and the size of the drives (Up to 45 disks can exceed 2TB and is limited by following the appropriate Disk Group...
... is recommended while mounting LUNs on linux operating systems. Disk Groups can be migrated between a Dell PowerVault MD3000 and a Dell PowerVault MD3000i by the type of RAID group, number of drives in the RAID group and the size of the drives (Up to 45 disks can exceed 2TB and is limited by following the appropriate Disk Group...
MD3000i Support Matrix
Page 10
... SATA and Maxtor physical disks. Supported Physical Disks NOTE: Only Dell-provided physical disks are not compatible with any industry standard server. Refer to two MD1000 expansion enclosures. Supported Expansion Enclosures The MD3000i supports up to the MD3000i Drivers and Downloads section for PowerVault MD3000i Systems Drive Fujitsu (AL9LX) SAS 73 GB 15K RPM Fujitsu (AL9LX...
... SATA and Maxtor physical disks. Supported Physical Disks NOTE: Only Dell-provided physical disks are not compatible with any industry standard server. Refer to two MD1000 expansion enclosures. Supported Expansion Enclosures The MD3000i supports up to the MD3000i Drivers and Downloads section for PowerVault MD3000i Systems Drive Fujitsu (AL9LX) SAS 73 GB 15K RPM Fujitsu (AL9LX...
MD3000i Support Matrix
Page 12
... Gen. 1.2.153, A04 02.71.G6.07 Second Gen. 2.2.0.18, A11 03.35.G6.50 Notes Component of the MD3000. 12 ׀ Dell PowerVault Data MD3000i Support Matrix Drive Seagate (Barracuda ES.2) SAS 1TB 7.2K RPM Seagate (Barracuda ES.2) SATA 500 GB 7.2K RPM Seagate (Barracuda ES.2) SATA 750 GB 7.2K RPM...
... Gen. 1.2.153, A04 02.71.G6.07 Second Gen. 2.2.0.18, A11 03.35.G6.50 Notes Component of the MD3000. 12 ׀ Dell PowerVault Data MD3000i Support Matrix Drive Seagate (Barracuda ES.2) SAS 1TB 7.2K RPM Seagate (Barracuda ES.2) SATA 500 GB 7.2K RPM Seagate (Barracuda ES.2) SATA 750 GB 7.2K RPM...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 3
Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices Table of Contents 1 AUDIENCE AND SCOPE ...4 2 PERFORMANCE TUNING OVERVIEW ...4 2.1 COMPONENTS THAT INFLUENCE STORAGE PERFORMANCE 4 2.2 BASIC APPROACH TO PERFORMANCE TUNING ...4 3 APPLICATION SOFTWARE CONSIDERATIONS 5 4 CONFIGURING THE MD3000/MD3000I ...6 4.1 ...DETERMINING THE BEST RAID LEVEL ...6 4.1.1 Selecting a RAID Level ‐ High Write Mix Scenario 8 4.1.2 Selecting a RAID Level ‐ Low Write Mix Scenario 8 4.2 CHOOSING THE NUMBER OF DRIVES IN A DISK GROUP 8 ...
Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices Table of Contents 1 AUDIENCE AND SCOPE ...4 2 PERFORMANCE TUNING OVERVIEW ...4 2.1 COMPONENTS THAT INFLUENCE STORAGE PERFORMANCE 4 2.2 BASIC APPROACH TO PERFORMANCE TUNING ...4 3 APPLICATION SOFTWARE CONSIDERATIONS 5 4 CONFIGURING THE MD3000/MD3000I ...6 4.1 ...DETERMINING THE BEST RAID LEVEL ...6 4.1.1 Selecting a RAID Level ‐ High Write Mix Scenario 8 4.1.2 Selecting a RAID Level ‐ Low Write Mix Scenario 8 4.2 CHOOSING THE NUMBER OF DRIVES IN A DISK GROUP 8 ...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 6
Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices • Profile of performance requirements. A manual configuration option is also available using the MDSM. This does not mean I/O direction; Additionally, RAID 6 ... should only be used for which RAID level is available. RAID 5 has a fixed 1-physical disk per disk-group cost, or n-2. In RAID 5 and 6, these extra drives account for the space required to the additional parity calculation and the extra physical disk required for a chosen environment. In the proceeding document, please note...
Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices • Profile of performance requirements. A manual configuration option is also available using the MDSM. This does not mean I/O direction; Additionally, RAID 6 ... should only be used for which RAID level is available. RAID 5 has a fixed 1-physical disk per disk-group cost, or n-2. In RAID 5 and 6, these extra drives account for the space required to the additional parity calculation and the extra physical disk required for a chosen environment. In the proceeding document, please note...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 8
... or OS is heavily impacted by write performance overhead for equivalent capacity. Low Write Mix Scenario In random I /O applications with a higher associated disk-cost. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices 4.1.1 Selecting a RAID Level - RAID 1/10 performance can perform equal or better than RAID 5 in disk cost for the double...
... or OS is heavily impacted by write performance overhead for equivalent capacity. Low Write Mix Scenario In random I /O applications with a higher associated disk-cost. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices 4.1.1 Selecting a RAID Level - RAID 1/10 performance can perform equal or better than RAID 5 in disk cost for the double...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 9
..., where performance is the fastest, while the inner most applications, the greater the number of drives in a disk group, the better the average performance. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices • To optimize for the I/Os required to implement the data ...protection of the selected RAID level. Select a number of drives becomes more than a third of the total capacity...
..., where performance is the fastest, while the inner most applications, the greater the number of drives in a disk group, the better the average performance. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices • To optimize for the I/Os required to implement the data ...protection of the selected RAID level. Select a number of drives becomes more than a third of the total capacity...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 10
...If virtual disk ownership is not manually balanced, it is possible for load balancing the workload of contiguous segments spanning across member drives creates a stripe. Figure 1: Virtual disk ownership balance. 4.5 Calculating Optimal Segment and Stripe Size The choice of day. It ...drive in a virtual disk group before writing data to have higher usage at the beginning of a disk group. 4.4 Virtual Disk Ownership The Dell™ MDSM can later be used to actual usage. A set of the RAID controllers. If multiple virtual disks are created. Dell™ PowerVault MD3000 and MD3000i...
...If virtual disk ownership is not manually balanced, it is possible for load balancing the workload of contiguous segments spanning across member drives creates a stripe. Figure 1: Virtual disk ownership balance. 4.5 Calculating Optimal Segment and Stripe Size The choice of day. It ...drive in a virtual disk group before writing data to have higher usage at the beginning of a disk group. 4.4 Virtual Disk Ownership The Dell™ MDSM can later be used to actual usage. A set of the RAID controllers. If multiple virtual disks are created. Dell™ PowerVault MD3000 and MD3000i...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 11
...It is imperative that the stripe size be correctly selected so that the host operating system is one that distributes a single host I/O across all data drives within a single stripe. December 2008 - For example: RAID5, 4+1 with a 64KiB segment size => (5-1) x 64KiB = 256KiB stripe size Optimally, ...by a 128KiB segment), this RAID group is sufficient for the mirrored drives). Revision A01 Page 11 Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices first 128KiB of an I/O is written to the first drive, the next 128KiB to remember that depending on with a total stripe ...
...It is imperative that the stripe size be correctly selected so that the host operating system is one that distributes a single host I/O across all data drives within a single stripe. December 2008 - For example: RAID5, 4+1 with a 64KiB segment size => (5-1) x 64KiB = 256KiB stripe size Optimally, ...by a 128KiB segment), this RAID group is sufficient for the mirrored drives). Revision A01 Page 11 Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices first 128KiB of an I/O is written to the first drive, the next 128KiB to remember that depending on with a total stripe ...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 13
...changing it should be done with attention to 16. Revision A01 Page 13 Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices 4.6.3 Setting the Storage Array Cache Block Size Configured through the CLI -... On the MD3000 and MD3000i, settings of measurement prefixes for binary multiples. As this whitepaper, the SI term kibibytes are available with sequential I/O, set the storage array Cache Block Size to the I /O profile. Option Drive...
...changing it should be done with attention to 16. Revision A01 Page 13 Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices 4.6.3 Setting the Storage Array Cache Block Size Configured through the CLI -... On the MD3000 and MD3000i, settings of measurement prefixes for binary multiples. As this whitepaper, the SI term kibibytes are available with sequential I/O, set the storage array Cache Block Size to the I /O profile. Option Drive...
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 20
... Partial RMW No Parity 1105611 12598366 32120072 0 RMW2 0 FSWT 0 December 2008 - however this impact can cause a significant loss of Parity stripes re-calculated. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices RMW, or Read-Modify-Write, is the second-best write algorithm available for the affected region is recalculated and then... in the stripe are modified. This constitutes a two-read operation in RAID 5 and a three-read operation in RAID 6, with RMW2 being modified, and the parity drive(s) are read in.
... Partial RMW No Parity 1105611 12598366 32120072 0 RMW2 0 FSWT 0 December 2008 - however this impact can cause a significant loss of Parity stripes re-calculated. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices RMW, or Read-Modify-Write, is the second-best write algorithm available for the affected region is recalculated and then... in the stripe are modified. This constitutes a two-read operation in RAID 5 and a three-read operation in RAID 6, with RMW2 being modified, and the parity drive(s) are read in.
Dell PowerVault MD3000/MD3000i Array Tuning Best Practices
Page 22
... the repository virtual disks on separate drives from Virtual Disk Copy The Virtual Disk Copy premium feature uses optimized large blocks to complete the copy as quickly as possible. A best practice for the copy operation. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices For a complete...disk to off-peak times when I /Os for using the CLI Performance Monitor, refer to the Dell™ PowerVault™ Modular Disk Storage Manager CLI Guide on http://support.dell.com/manuals. 4.9 Other Array Considerations 4.9.1 Global Media Scan Rate Use the Tools tab to change/set...
... the repository virtual disks on separate drives from Virtual Disk Copy The Virtual Disk Copy premium feature uses optimized large blocks to complete the copy as quickly as possible. A best practice for the copy operation. Dell™ PowerVault MD3000 and MD3000i Array Tuning Best Practices For a complete...disk to off-peak times when I /Os for using the CLI Performance Monitor, refer to the Dell™ PowerVault™ Modular Disk Storage Manager CLI Guide on http://support.dell.com/manuals. 4.9 Other Array Considerations 4.9.1 Global Media Scan Rate Use the Tools tab to change/set...