| 비 (4) | 2011.07.14 |
|---|---|
| 내가 환자라니!! (2) | 2011.07.08 |
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| 악 마이 허리! (0) | 2011.06.27 |
| 메일 호스팅 비싸긴 비싼데... (0) | 2011.06.18 |
| 무지와 무식의 차이 (0) | 2011.08.05 |
|---|---|
| 여자에 대하여 (4) | 2011.07.23 |
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| 이런건 좀 정상참작 안됨? (4) | 2011.06.15 |
| 살인의 분업에 따른 생명의 가치 하락 (2) | 2011.05.29 |
Appendix A. Installing
the Battery Backup Unit
The Battery Backup Unit (BBU) is an add-on that can be attached to a 3ware 9000 RAID controller to supply power to the memory module from an attached battery pack in the event of a system power loss. This allows the controller to use write-caching for optimal performance and not be exposed to data loss in the event of a system power failure. When fully charged, the battery preserves the contents of the controller cache memory for a limited period of time (up to 72 hours). When power is restored, cached data is flushed to disks.
|
| RAID 1E (0) | 2011.07.27 |
|---|---|
| 3ware 9500S LP 초기가격이 헉?! (0) | 2011.07.09 |
| RAID 레벨별 용량 및 디스크 갯수 (0) | 2011.07.02 |
| LSI 53C1020A (onboard SCSI controller / RAID) (0) | 2011.07.02 |
| 3ware 홈페이지 (2) | 2011.06.30 |
| 아오 ㅋㅋㅋ 이렇게 빠질줄이야 (0) | 2011.07.20 |
|---|---|
| MROMB / ROMB (0) | 2011.07.09 |
| ROMB (0) | 2011.07.03 |
| Intel Integrated Mirroring / Integrated Striping RAID for Intel Server Boards SE7520BD2 (0) | 2011.07.03 |
| Intel Server Board SE7520BD2V (0) | 2011.07.02 |
Ultra320 SCSI
SE7520BD2V:
One Ultra320/LVD channel via either the LSI Logic* 53C1020 or LSI Logic 53C1020A SCSI controller, supporting RAID 0 and 1, and support for modular ROMB (Intel® RAID Controller SRCZCRX)
SE7520BD2SCSI:
Two Ultra320/LVD channels via the LSI Logic 53C1030 SCSI controller and connected via two internal 68-pin-wide connectors; maximum data transfer 320 MB/sec on each Ultra320/LVD channel, supporting RAID 0 and 1, and support for modular ROMB (Intel RAID Controller SRCZCRX)
|
| MROMB / ROMB (0) | 2011.07.09 |
|---|---|
| SCSI (0) | 2011.07.03 |
| Intel Integrated Mirroring / Integrated Striping RAID for Intel Server Boards SE7520BD2 (0) | 2011.07.03 |
| Intel Server Board SE7520BD2V (0) | 2011.07.02 |
| Intel Entry Server Chassis (0) | 2011.06.25 |
| 1. Integrated RAID Overview
The integrated RAID solution provides cost benefits for the server or workstation market where
the extra performance, storage capacity, and/or redundancy of a RAID configuration are
required. The two components of integrated RAID are:
Integrated Mirroring (IM) provides features of RAID 1
Integrated Striping (IS) provides features of RAID 0
By simplifying the IM and IS configuration options and by providing firmware support in its host
adapters, integrated RAID can offer the integrated RAID solution at a lower cost than a full-blown RAID implementation.
This document provides a reference to expedite the configuration of integrated RAID.
Notes:
- Integrated RAID offers advanced features including I/O performance with additional data
security; however, there are several considerations of which to be aware.
- Only one RAID configuration (logical drive) is allowed.
- Integrated RAID may take an extended period of time to complete the initialization after
the RAID setup. The amount of time required depends whether the initialization is
completed within the BIOS-based utility or completed with the operating system-based
utility. The amount of time required also depends on the complexity of the configuration
and capability of the system being configured.
- Unlike a hardware controller, integrated RAID consumes system resources such as CPU
cycles and system memory to handle I/O requests; in a situation where the CPU is
heavily loaded, the I/O performance may drop significantly.
is not supported.
2. Integrated RAID Implementation Guidelines
2.1 Integrated Mirroring
Integrated Mirroring (IM) provides data protection for the system volume. The purpose is to
safeguard critical information, such as the operating system.
IM can be set up with two hard disk drives to maintain high performance, as well as data
availability and fault tolerance. If one disk drive fails, the hot swap drive mechanism allows the
system to maintain operation while the failed disk drive can be replaced. In addition, the hot
spare capability enables the system to automatically replace the defective drive with a standby
disk.
IM requires extra time synchronization in BIOS mode as compared to the synchronization time
in operating system mode. In BIOS mode (<Ctrl>+<C>), 1 hour for each 5 gigabytes of hard
drive capacity is typically required to complete initializing the mirror. For example, for two 100
gigabyte drives configured in a RAID 1 mirroring, 18-20 hours should be allowed for the
initialization to complete.
The IM firmware uses queue tagged I/Os to allow SCSI I/Os to continue on the IM volume while
the volume is re-synchronized in the background. The host driver may optionally suspend the
resynchronization operation while performing domain validation or while configuring Ultra320
SCSI expanders.
2.2 Integrated Striping
Integrated Striping (IS) is available for applications that require faster I/O performance and
higher storage capacity for non critical data. With this option there is no drive failover. Failure of
a drive results in a loss of all data on the drives holding the data stripe. By reading and writing
data concurrently across several disks, IS offers excellent performance as compared to a single
physical disk. However, the risk of data loss increases because a single disk failure will cause
the loss of the entire logical drive.
The IS configuration is available only for new installations. Migration of data with existing disks
|
| SCSI (0) | 2011.07.03 |
|---|---|
| ROMB (0) | 2011.07.03 |
| Intel Server Board SE7520BD2V (0) | 2011.07.02 |
| Intel Entry Server Chassis (0) | 2011.06.25 |
| 지름신 신고 (4) | 2011.06.24 |
| Latest Release Archived Releases CUDA Toolkit 1.0 (June 2007) [링크 : http://developer.nvidia.com/cuda-toolkit-archive] |
| openCL - ATI APP SDK (0) | 2012.03.11 |
|---|---|
| ATI Stream 하드웨어 요구사항 (0) | 2011.10.07 |
| CUDA 4.0 RC (4) | 2011.03.02 |
| CUDA - Multi GPU 프로그래밍 (1) | 2011.02.05 |
| CUDA driver API / runtime API (0) | 2011.01.26 |
디스크 갯수별 사용 가능한 RAID 레벨
| 3ware 9500S LP 초기가격이 헉?! (0) | 2011.07.09 |
|---|---|
| 3ware RAID BBU(Backup Battery Unit) (0) | 2011.07.04 |
| LSI 53C1020A (onboard SCSI controller / RAID) (0) | 2011.07.02 |
| 3ware 홈페이지 (2) | 2011.06.30 |
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|
integrated RAID Configuration Guide.pdf
