ZFS RAM usage more precise.

[pve-docs.git] / pve-installation.adoc

diff --git a/pve-installation.adoc b/pve-installation.adoc
index 28e86aad6c1c66d3aff4e98a4c6301f5158e3630..cf32851f55cfecb2e1c33ae8fcdab97b33daec80 100644 (file)
--- a/pve-installation.adoc
+++ b/pve-installation.adoc
@@ -59,7 +59,7 @@ BIOS is unable to read the boot block from the disk.
 
 Test Memory::
 
-Runs `memtest86+`. This is useful to check if your memory if
+Runs `memtest86+`. This is useful to check if your memory is
 functional and error free.
 
 You normally select *Install Proxmox VE* to start the installation.
@@ -74,9 +74,9 @@ ZFS supports several software RAID levels, so this is specially useful
 if you do not have a hardware RAID controller. The `Options` button
 lets you select the ZFS RAID level, and you can choose disks there.
 
-The next pages just asks for basic configuration options like time
+The next pages just ask for basic configuration options like time
 zone and keyboard layout. You also need to specify your email address
-and select a superuser password.
+and superuser (root) password (must have at least 5 characters).
 
 The last step is the network configuration. Please note that you can
 use either IPv4 or IPv6 here, but not both. If you want to configure a
@@ -121,8 +121,7 @@ system.
 
 `maxvz`::
 
-Define the size of the `data` volume, which is mounted at
-`/var/lib/vz`.
+Define the size of the `data` volume.
 
 `minfree`::
 
@@ -136,8 +135,9 @@ required for lvmthin snapshots).
 ZFS Performance Tips
 ^^^^^^^^^^^^^^^^^^^^
 
-ZFS uses a lot of memory, so it is best to add additional 8-16GB RAM
-if you want to use ZFS.
+ZFS uses a lot of memory, so it is best to add additional RAM if you
+want to use ZFS. A good calculation is 4GB plus 1GB RAM for each TB
+RAW disk space.
 
 ZFS also provides the feature to use a fast SSD drive as write cache. The
 write cache is called the ZFS Intent Log (ZIL). You can add that after
@@ -159,7 +159,7 @@ Install {pve} on Debian
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 {pve} ships as a set of Debian packages, so you can simply install it
-on top of a normal Debian installation.  After configuring the
+on top of a normal Debian installation. After configuring the
 repositories, you need to run:
 
 [source,bash]
@@ -199,4 +199,3 @@ See Also
 * link:/wiki/Installation:_Tips_and_Tricks[Installation: Tips and Tricks]
 
 endif::wiki[]
-