From a40a9cccc84938228f3a11e779799b91526d5ac3 Mon Sep 17 00:00:00 2001
From: godp21 <godp21@inf.ufpr.br>
Date: Mon, 24 Apr 2023 10:24:41 -0300
Subject: [PATCH] testinf some MD identations. Added a few info about cache in
 ZFS

---
 ZFS-RAIDs.md | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/ZFS-RAIDs.md b/ZFS-RAIDs.md
index 6cab67b..69896f6 100644
--- a/ZFS-RAIDs.md
+++ b/ZFS-RAIDs.md
@@ -1,8 +1,8 @@
 # ROADMAP
 - [x] RAID{0,1,6,10}
 - [x] ZFS description and capabilities
-- [X] RAID implementations in ZFS
-- [ ] Cache systems in ZFS
+- [x] RAID implementations in ZFS
+- [x] Cache systems in ZFS
 ___
 
 - [ ] ZFS for DB or lvm+ext4
@@ -72,3 +72,8 @@ ZFS implements versions of RAID0, RAID1 and RAID6. The first and second one are
 As known in RAID10 implementation, ZFS can take two or more RAID1 tank arrangements to make a RAID0 array, resulting in a RAID10 setup. This setup needs at least four total disks
 
 It's important to know that a RAID0 and RAID1 requires at least two disks, and any RAID-Z requires at least n+2 disks, n being the total amount of parity disks available in the system.
+
+## Cache in ZFS
+### Read caching:
+- ARC (**A**daptive **R**placement **C**ache) |=| Simple RAM cache.
+- L2ARC (**L**evel **2** **ARC**) |=| Adds SSDs in cache flow so oldest data removed from RAM gets on a faster device than hard drives.
-- 
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