RAID: Difference between revisions
From DWIKI
mNo edit summary |
mNo edit summary |
||
| Line 28: | Line 28: | ||
# the first bit | # the first bit | ||
dd if=/dev/zero of=$DISK bs=512 count=1 | dd if=/dev/zero of=$DISK bs=512 count=1 | ||
=FAQ= | |||
==BBU== | |||
===Relative State of Charge=== | |||
Should be well above 90% | |||
Revision as of 10:04, 14 April 2023
Redundant Array of Inexpensive Disks
- http://en.wikipedia.org/wiki/RAID
- Linux Software Raid
- Raid Calculator
- https://kb.open-e.com/information-on-configuring-for-optimal-raid-performance_1323.html
ACHTUNG don't forget block/partition alignment!
Cache settings
write through
write back
always write back
HOWTO
Remove raid metadata from disk
DISK=/dev/sdc # the last bit dd if=/dev/zero of=$DISK bs=512 seek=$(( $(blockdev --getsz $DISK) - 1024 )) count=1024 # the first bit dd if=/dev/zero of=$DISK bs=512 count=1
FAQ
BBU
Relative State of Charge
Should be well above 90%
