发布网友 发布时间:2022-05-04 13:42
共6个回答
懂视网 时间:2022-05-04 18:03
Direct Access Storage Device Direct Access Storage Device is a general term for magnetic disk storage devices, which historically have been used in mainframe and minicomputer (mid-range computer) environments. A redundant array of independ
Direct Access Storage Device
Direct Access Storage Device is a general term for magnetic disk storage devices, which
historically have been used in mainframe and minicomputer (mid-range computer)
environments. A redundant array of independent disks (RAID) is a type of DASD. The
key distinction between Direct Access and Sequential Access storage devices is that any
point on a Direct Access Storage Device may be promptly reached, whereas every point
in between the current position and the desired position of a Sequential Access Storage
Device must be traversed in order to reach the desired position. Tape drives are Sequential
Access Storage Devices. Some tape drives have minimal amounts of Direct Access
intelligence built in. These include multitrack tape devices that store at specific points
on the tape and cache in the tape drive information about where major sections of data
on the tape begin, allowing the tape drive to more quickly reach a track and a point on
the track, from which to begin the now much shorter traversal of data from that inch12.dexed point to the desired point. While this makes such tape drives noticeably faster
than their purely sequential peers, the difference in performance between Sequential
and Direct Access Storage Devices is orders of magnitude.
木鸟” 博客,谢绝转载!
热心网友 时间:2022-05-04 15:11
这个首先要看硬盘的指示灯是否正常,阵列是否正常,建议立刻备份数据先。如果这些都正常的话,就是硬盘背板出问题了,过保的话就有点麻烦了热心网友 时间:2022-05-04 16:29
保修期内的话找800.保修期外的话重启插拔下对应亮黄灯的硬盘看看能不能正常。热心网友 时间:2022-05-04 18:04
硬盘坏了热心网友 时间:2022-05-04 19:55
有数据的话建议找供货商,OR 向楼上所说打800电话!热心网友 时间:2022-05-04 22:03
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