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标题: 跟LSI諮詢了老半天...總覺得他那個SSD Guard也是蠻廢的功能..=_="" [打印本页]

作者: per1-q1222    时间: 2010-4-22 16:00
标题: 跟LSI諮詢了老半天...總覺得他那個SSD Guard也是蠻廢的功能..=_=""
兩顆SSD才大概可以突顯出它的用處...=_=""
如果使用5~6顆SSD...
使用更是麻煩...
作者: per1-q1222    时间: 2010-4-22 16:49
本帖最后由 per1-q1222 于 2010-4-22 16:53 编辑

回复 2# zjalone
服務人員講的跟官方技術文件講的基本一致...

SSD Guard需要SSD Hot Spare...
簡單來說就是在SSD下..
RAID 0允許Hot Spare(傳統HDD可沒辦法了...RAID0就死給你看...)...
如果其中一顆故障...
會啟用另一顆SSD Hot Spare回寫數據...

LSI目前沒有提供對SSD任何的有效安全及效能提升上的機制(未來???....不知道!!...)...

SSD Guard要有效使用會提升成本(Cost)...
例如使用兩顆SSD就必須再添加一顆SSD做Hot Spare...
作者: nikon_d3x    时间: 2010-4-22 17:41
MegaRAID Advanced Services

LSI MegaRAID FastPath
LSI MegaRAID FastPath optimization software provides a high performance I/O accelerator, designed to dramatically boost transactional application throughput of multiple SSDs connected to a 6Gb/s SATA+SAS MegaRAID controller. FastPath supports full optimization of SSD Virtual Disk groups to deliver a 3X improvement in read and write I/Os per second (IOPS) compared to the previous generation product.


LSI MegaRAID CacheCade
LSI MegaRAID CacheCade tiered cache allows users to leverage SSDs in front of hard disk drives (HDDs) to create up to 512GB of controller cache. Using SSDs as controller cache allows for very large data sets to be present in cache to deliver up to a 50X performance improvement in read-intensive applications, such as file, Web, OLTP and database server. The solution is designed to provide a dramatic performance upgrade while only requiring a small investment in SSD technology.


LSI MegaRAID Recovery
LSI MegaRAID Recovery enhances file and boot-block/volume protection, empowering IT administrators with data retrieval and upgrade risk-management. Users can capture source volume data at designated Points-in-Time (PiT) and "restore " or "rollback" should accidental or malicious data deletion or infection occur. While traditional periodic off-hour backups continue to be the primary method for preventing complete data loss, MegaRAID Recovery meets a growing need for more frequent restore points and reduced recovery times. By supplementing traditional backup methods with MegaRAID Recovery, IT organizations can avoid unexpected downtime and greatly enhance their level of business continuity, datPro-Atection and restore capabilities.


http://www.lsi.com/storage_home/ ... services/index.html
作者: ei3mir3    时间: 2010-4-23 10:22
不明白,不清楚,学习下
作者: shar001    时间: 2010-4-23 11:45
我最关心的是 LSI 什么时候支持  SSD 多盘阵列 开启 Trim功能。。。
作者: nikon_d3x    时间: 2010-4-23 19:35
本帖最后由 nikon_d3x 于 2010-4-23 19:37 编辑
我最关心的是 LSI 什么时候支持  SSD 多盘阵列 开启 Trim功能。。。
shar001 发表于 2010-4-23 11:45

好像目前各大品牌都在研究当中。。。。。。
作者: shar001    时间: 2010-4-23 19:42
好像目前各大品牌都在研究当中。。。。。。
nikon_d3x 发表于 2010-4-23 19:35

多盘阵列开启 Trim 是 实现低成本+高速度+长寿命(间接提高可靠性)的必由之路!
同时也极大地释放了 SATA 6GBs + PCI-E X8/X16的 带宽优势~!




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