fyddt

新的OCZ 读525M写475M，价格也差不多吧。

不过我是硬盘党...SSD不合适

fyddt

原帖由 bobwu 于 2011-7-18 19:04 发表



4K如何？这个还有高速度的都是256G的，一般64G 128G因为颗粒数的问题，造成读写通道数都不如120G以上容量SSD的通道数多。

60G相对是慢了一点：
60GB Max Performance*

• Max Read: up to 525MB/s
• Max Write: up to 475MB/s
• Random Write 4KB (Aligned): 50,000 IOPS

120GB Max Performance*

• Max Read: up to 525MB/s
• Max Write: up to 500MB/s
• Random Write 4KB (Aligned): 50,000 IOPS

240GB Max Performance*

• Max Read: up to 525MB/s
• Max Write: up to 500MB/s
• Random Write 4KB (Aligned): 45,000 IOPS
  

fyddt

原帖由 bobwu 于 2011-7-18 22:15 发表


奇怪为啥容量大了4K的IOPS还降低了？

通常都这样吧，超过一定容量通道数就太多，另外一个系列：
40GB Max Performance

• Max Read: up to 280 MB/s
• Max Write: up to 270 MB/s
• Sustained Write: up to 200 MB/s
• Random Write 4k (Aligned): 45,000 IOPS

50-240GB Max Performance

• Max Read: up to 285MB/s
• Max Write: up to 275MB/s
• Sustained Write: up to 250MB/s
• Random Write 4KB (Aligned): 50,000 IOPS

400-480GB Max Performance

• Max Read: up to 250MB/s
• Max Write: up to 240MB/s
• Sustained Write: up to 200MB/s
• Random Write 4KB (Aligned): 22,500 IOPS