Questions tagged [raid-z]

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1answer
299 views

ZFS and RAID configuration in a personal virtualization Proxmox 6.2 server

I happen to have this unused computer, and I upgraded its hardware a bit so I can use it as my personal platform for virtualized small servers. I plan to put Proxmox 6.2 on it but, before I install it,...
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0answers
216 views

How to connect additional drives to HBA controller?

I have a HBA 330 IT controller which has 2x4 12 Gbit/s SAS (or 6 Gbit/s SATA) ports, available through two SFF-8643 mini-SAS connectors. Though it has only 8 ports, it can aparently support up to 32 ...
1
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1answer
641 views

Grow ZFS RAID-Z[123] without degradation?

I know that on ZFS, the only way to grow a RAID-Z (or RAID-Z2 or RAID-Z3) vdev is to replace the disks with larger ones; there is no way to change the geometry. However, is it possible to do so ...
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0answers
496 views

How to decrypt, create, and mount LUKS encrypted zfs raidz pool at startup?

I have an Ubuntu-18.04 box running the OS off an SSD which I do NOT want to encrypt. I have 3 additional 2TB drives which I would like to use as encrypted (via LUKS) RAID-Z1 additional storage. I ...
4
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2answers
2k views

Create a zfs raidz2 with 4k disks

I want to create a zfs raidz2 with 4 disks. I know this will "waste" at least 50% of the space but I aim at a high tolerance against disk failures. Using 5 disks for raidz2 is not recommended and 6 ...
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0answers
204 views

ZFS - Raid organization with 4 SSDs/4 HDDs

I'm building a virtualization server using Proxmox (although the Hypervisor itself is not really the question here) and have the following hardware at hand (the interesting parts): Note: The hardware ...
1
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1answer
830 views

How do I set up this ZFS pool correctly?

Summary: I have set up a RAIDZ array of 4 HDDs with two SSD cache devices, and I don't get the expected results in cache boost and general performance.Also, some things don't seem to add up. ...
1
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0answers
675 views

Eight-disk RAID-Z2 array has less capacity available than expected

I have a problem to explain the missing capacity in my raidz2 # zpool status -v nas pool: nas state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM ...
2
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1answer
3k views

Optimal ZFS Pool configuration for a home NAS

I am looking to upgrade my home NAS, which I use to store movies (with Plex Media Server), pictures and backups. Currently, it has 5 3TB disks in a raidz1 pool. I was limited by the number of SATA ...
2
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1answer
1k views

Adding a parity drive to a RAID-Z1 array

Can I create an array as a RAID-Z1 and then later add another pairity drive to make it into a RAID-Z2? I’ve got 4TB of data on a drive I’d like to add into an array that I’m building out of fresh ...
2
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0answers
711 views

Import zpool with one unknown missing vdev_children.

My raid-z zpool was in degraded mode, I have added a new disk in the zpool with the command: zpool add -f uhuru-test da3 The problem is that da3 have been accidentaly erased and now uhuru-test pool ...
5
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2answers
16k views

How to add an additional drive to an existing ZFS RAIDZ-1 in Proxmox?

I've a ZFS installation in Proxmox, in particular a RAIDZ-1 file system, for testing purposes (before going on production with this setup) I've added a new drive to the machine, but I'm blocked on ...
2
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1answer
566 views

Is it a bad idea to have one of multiple partitions of an ssd as cache in a raidz2 setup?

I'm setting up a system with 5 HDD's in RAIDZ2 and one SSD where the OS goes. I'm considering partitioning the system drive (the SSD) to set the free partition of the SSD as a cache in the RAIDZ2. I'...
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1answer
4k views

Can I create a ZFS mirror in FreeNAS using different sized disks?

I've just bought a new 4-bay N54L server for home use. I've upgraded it to 8G of RAM, which will permit me to run FreeNAS 9.1.x with ZFS. I've loaded a new 2TB SATA disk plus a spare 250G disk into ...
0
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1answer
868 views

FreeNAS/ZFS/Raid-Z slightly different disks

I'm considering using FreeNAS and "recycling" some of my older 1TB disks. Two are the exact same model Western Digital while another is Seagate and the fourth is Samsung. Typically, since all disks ...
31
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6answers
77k views

ZFS Beginner Setup with Different Size Drives

Sorry for the noobie questions, I've been Googling all sorts of walkthroughs to create my ZFS raid, but I can't seem to find the correct links for the answers I'm looking for. This is my first ...
2
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3answers
12k views

ZFS raidz2 performance issues read/write speeds on Freenas

I'm having some performance issues on my home backup FreeNas box using a raidz2 configuration and I am wondering what might be causing it (not enough processing power, eco drives?). It's running: ...
1
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1answer
863 views

FreeNAS 8.2.x - IDE vmware drive detected as multipath and causing errors

First of all I had FreeNAS 7 running as dedicated on HP Microserver, then upgraded to 8 upgrading my pool as well (4x1TB RaidZ) Since I upgraded to FreeNAS 8 I had this message popping up. it meant ...
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1answer
3k views

Can you easily grow a RAIDZ with more disks? [duplicate]

Possible Duplicate: Start a ZFS RAIDZ zpool with two discs then add a third? RAID5 / RAIDZ - is it possible to enlarge without losing data? I'm setting up a home Network Attached Storage using ...
14
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5answers
19k views

Start a ZFS RAIDZ zpool with two discs then add a third?

Let's say I have two 2TB HDDs and I want to start my first ZFS zpool. Is it possible to create a RAIDZ with just those two discs, giving me 2TB of usable storage (if I understand it right) and then ...
4
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1answer
8k views

ZFS Hard Drive Configuration in FreeNAS

I've been messing around with FreeNAS installed on a USB Flash Drive for a week or so, just testing all the services and possible hard drive configurations utilizing ZFS. It's a pretty neat setup but ...
28
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11answers
53k views

Is ZFS and RAID-Z worth using in home made NAS (freeNAS for example)

Features of ZFS and RAID-Z look vary promising. Looks like it is a perfect FS for home NAS solutions, poor man's Drobo things and alike. Are there any drawbacks I should be aware of?