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Update LVM info in tips.md #48301

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Apr 1, 2023
Merged

Update LVM info in tips.md #48301

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0b70a86
Update LVM info in tips.md
DanRoscigno Mar 31, 2023
e9a4e94
Merge branch 'master' into DanRoscigno-patch-5
rfraposa Mar 31, 2023
a28996d
Update docs/en/operations/tips.md
DanRoscigno Apr 1, 2023
9061b03
Update docs/en/operations/tips.md
DanRoscigno Apr 1, 2023
62ecac8
Add mdadm to aspell-dict.txt
DanRoscigno Apr 1, 2023
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6 changes: 5 additions & 1 deletion docs/en/operations/tips.md
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Expand Up @@ -51,10 +51,14 @@ But for storing archives with rare queries, shelves will work.
## RAID {#raid}

When using HDD, you can combine their RAID-10, RAID-5, RAID-6 or RAID-50.
For Linux, software RAID is better (with `mdadm`). We do not recommend using LVM.
For Linux, software RAID is better (with `mdadm`).
When creating RAID-10, select the `far` layout.
If your budget allows, choose RAID-10.

LVM by itself (without RAID or `mdadm`) is ok, but making RAID with it or combining it with `mdadm` is a less explored option, and there will be more chances for mistakes
(selecting wrong chunk size; misalignment of chunks; choosing a wrong raid type; forgetting to cleanup disks). If you are confident
in using LVM, there is nothing against using it.

If you have more than 4 disks, use RAID-6 (preferred) or RAID-50, instead of RAID-5.
When using RAID-5, RAID-6 or RAID-50, always increase stripe_cache_size, since the default value is usually not the best choice.

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1 change: 1 addition & 0 deletions utils/check-style/aspell-ignore/en/aspell-dict.txt
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Expand Up @@ -374,6 +374,7 @@ llvm
localhost
macOS
mariadb
mdadm
miniselect
msgpack
msgpk
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