I have a setup with PBS backing up VM:s from PVE. Those backups are written to tape weekly.
I'm upgrading the tape drive from LTO4 to LTO5 but my setup has been struggling to keep up the streaming for the LTO4 drive with periodical shoe-shining occurring while running the backup jobs. As LTO5 has higher bandwidth I'm assuming I would need to upgrade some parts on my setup to prevent shoe-shining from happening in order to make the tape drive and tapes last longer.
My current setup is as follows:
Zpool:
With the special vdev consisting of 120gb Intel S3500 series SSD:s and data disks 8TB 7200RPM HGST SAS3 drives. Pool has atime=off which considerably improved the read performance from the pool when running the tape backup jobs. The server currently has 16GB of ram.
Any suggestions on how to improve the performance while writing to tape? Would doubling the ram to 32GB have any positive performance effects on large-ish tape backup jobs?
I'm upgrading the tape drive from LTO4 to LTO5 but my setup has been struggling to keep up the streaming for the LTO4 drive with periodical shoe-shining occurring while running the backup jobs. As LTO5 has higher bandwidth I'm assuming I would need to upgrade some parts on my setup to prevent shoe-shining from happening in order to make the tape drive and tapes last longer.
My current setup is as follows:
Zpool:
Code:
NAME STATE READ WRITE CKSUM
backup-pool ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
wwn-0x5000cca27d0d5a04 ONLINE 0 0 0
wwn-0x5000cca27d0b9818 ONLINE 0 0 0
special
mirror-1 ONLINE 0 0 0
wwn-0x55cd2e404c4d5612 ONLINE 0 0 0
wwn-0x55cd2e404c4d614d ONLINE 0 0 0Any suggestions on how to improve the performance while writing to tape? Would doubling the ram to 32GB have any positive performance effects on large-ish tape backup jobs?
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