两种方法实现ISCSI Target-2

两种方法实现ISCSI Target-2
  还有两种特别的商业版iSCSI Target 软件,如Wasabi Systems 的Storage Builder 1500i,此是将iSCSI Target 软件搭配嵌入式操作系统(推测为BSD),一并存于IDE 接口的Compact Flash 记忆卡内,只要将此卡插置于一般x86 硬件,即可让该硬件转变成iSCSI Target。另一则是RocketDivision 的StarWind 与StarPort,前者为iSCSI Target 软件,后者为iSCSI Initiator 软件,使用于Windows 操作系统上,但作用不...

两种方法实现ISCSI Target-1

两种方法实现ISCSI Target-1
iSCSI Initiator 可用软件方式实现,同样的iSCSI Target 也行,不过优劣特点也相近,即是偏成本取向且不易达到专属硬件的效能。且要更注意的是,iSCSI Initiator 软件确实多半采随附的放送策略…… 软件法:如何实现一个iSCSI Target iSCSI Initiator 可用软件方式实现,同样的iSCSI Target 也行,不过优劣特点也相近,即是偏成本取向且不易达到专属硬件的效能。且要更注意的是,iSCSI Initiator 软件确实多半...

RAID10工作原理图解及特点分析

RAID10工作原理图解及特点分析
RAID 10: Very High Reliability combined with High Performance Characteristics/Advantages 1. RAID 10 is implemented as a striped array whose segments are RAID 1 arrays 2. RAID 10 has the same fault tolerance as RAID level 1 3. RAID 10 has the same overhead for fault-tolerance as mirroring alone 4. High I/O rates are achieved by striping RAID 1 segments 5. Under certain circum...

RAID7工作原理图解及特点分析

RAID7工作原理图解及特点分析
RAID 7: Optimized Asynchrony for High I/O Rates as well as High Data Transfer Rates Architectural Features: 1. All I/O transfers are asynchronous, independently controlled and cached including host interface transfers 2. All reads and write are centrally cached via the high speed x-bus 3. Dedicated parity drive can be on any channel 4. Fully implemented process oriented real...

RAID6工作原理图解及特点分析

RAID6工作原理图解及特点分析
RAID 6: Independent Data disks with two independent distributed parity schemes Characteristics/Advantages 1. RAID 6 is essentially an extension of RAID level 5 which allows for additional fault tolerance by using a second independent distributed parity scheme (two-dimensional parity) 2. Data is striped on a block level across a set of drives, just like in RAID 5, and a secon...

RAID5工作原理图解及特点分析

RAID5工作原理图解及特点分析
RAID 5: Independent Data disks with distributed parity blocks Characteristics/Advantages 1. Highest Read data transaction rate 2. Medium Write data transaction rate 3. Low ratio of ECC (Parity) disks to data disks means high efficiency 4. Good aggregate transfer rate Disadvantages 1. Disk failure has a medium impact on throughput 2. Most complex controller design 3. Difficul...

RAID4工作原理图解及特点分析

RAID4工作原理图解及特点分析
RAID 4: Independent Data disks with shared Parity disk Characteristics/Advantages 1. Very high Read data transaction rate 2. Low ratio of ECC (Parity) disks to data disks means high efficiency 3. High aggregate Read transfer rate Disadvantages 1. Quite complex controller design 2. Worst Write transaction rate and Write aggregate transfer rate 3. Difficult and inefficient dat...
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