On Thu, 2022-02-10 at 18:11 +0200, Matti Pulkkinen wrote:
Hello,
TL;DR are there particular workloads that suffer from having to
access
a RAID0 array?
I've currently got my /home partition in a BTRFS RAID0 array with two
1
TB mechanical drives, and I'm considering getting SSDs for /home
instead. I could get one 2 TB SSD and be happy with it, but I could
instead get two 1 TB SSDs and make a RAID0 array again. The latter
option would of course get me better overall throughput, but I'm
wondering whether there are workloads that might suffer from being
run from a RAID0 array vs. just running on a "bare" disk.
What I did was convert my 2x1TB HDDs (rescued from a dead NAS) to a
BTRFS RAID1 array and attach them via a USB3 port for use as backup
(using BorgBackup, which dedupes and compresses). I installed a single
2TB SSD (on a SATA3 port) for active use, i.e. /root, /home, /boot
etc., also under BTRFS but with no RAID. My workload is nothing
special, so YMMV, but I find the throughput of the SSD so dramatically
better than an HDD that I don't care that it's not striped.
poc