o****p
发帖数: 9785 | 1 我有个QNAP TS451，以前装了两个1T两个4T的做raid 1。这次我新买来两个8T的盘想换
掉1T的，换完以后显示只有1T的容量。请问我有什么办法可以变回8T，如果不格式化硬
盘的话？ |
o****p
发帖数: 9785 | 2 另外我如果想变成raid5的话就需要用同样大小的硬盘，并且还要把数据都擦掉才有可
能是吗？ |
p*******m
发帖数: 20761 | |
y****i
发帖数: 12114 | 4 RAID 1 consists of an exact copy (or mirror) of a set of data on two or more
disks; a classic RAID 1 mirrored pair contains two disks. This
configuration offers no parity, striping, or spanning of disk space across
multiple disks, since the data is mirrored on all disks belonging to the
array, and the array can only be as big as the smallest member disk. This
layout is useful when read performance or reliability is more important than
write performance or the resulting data storage capacity.
RAID 5 consists of block-level striping with distributed parity. Unlike in
RAID 4, parity information is distributed among the drives. It requires that
all drives but one be present to operate. Upon failure of a single drive,
subsequent reads can be calculated from the distributed parity such that no
data is lost.RAID 5 requires at least three disks. |
o****p
发帖数: 9785 | 5 谢了。网上搜了扩容的资料没有在讲raid 1，或许我可以再多花点时间研究。一开始我
装的就是raid 1，这样要换成raid5就很麻烦了。另外这raid5直觉就是必须同样大小的
盘，我现在只有两个4t两个8
t，还是raid1了。在storage里折腾很久，点expand就显示没有可以用的盘，我想可能
raid1特性就是这样。系统盘都在这上，可能必须得重装系统才能解决问题了。
more
than
that
【在 y****i 的大作中提到】
: RAID 1 consists of an exact copy (or mirror) of a set of data on two or more
: disks; a classic RAID 1 mirrored pair contains two disks. This
: configuration offers no parity, striping, or spanning of disk space across
: multiple disks, since the data is mirrored on all disks belonging to the
: array, and the array can only be as big as the smallest member disk. This
: layout is useful when read performance or reliability is more important than
: write performance or the resulting data storage capacity.
: RAID 5 consists of block-level striping with distributed parity. Unlike in
: RAID 4, parity information is distributed among the drives. It requires that
: all drives but one be present to operate. Upon failure of a single drive,
|
p*******m
发帖数: 20761 | 6 家里用raid基本上是需要吃非常非常饱才干的 出个问题非常难办
我的是两个硬盘互相考 运行个软件每天半夜检查一下
我的台式机是raid0 每天几个不同备份 那天完蛋 可以救回来数据
【在 o****p 的大作中提到】
: 谢了。网上搜了扩容的资料没有在讲raid 1，或许我可以再多花点时间研究。一开始我
: 装的就是raid 1，这样要换成raid5就很麻烦了。另外这raid5直觉就是必须同样大小的
: 盘，我现在只有两个4t两个8
: t，还是raid1了。在storage里折腾很久，点expand就显示没有可以用的盘，我想可能
: raid1特性就是这样。系统盘都在这上，可能必须得重装系统才能解决问题了。
:
: more
: than
: that
|
m*d
发帖数: 7658 | 7 家里组raid纯属蛋疼
【在 p*******m 的大作中提到】
: 家里用raid基本上是需要吃非常非常饱才干的 出个问题非常难办
: 我的是两个硬盘互相考 运行个软件每天半夜检查一下
: 我的台式机是raid0 每天几个不同备份 那天完蛋 可以救回来数据
|
