As my services have expanded over the last 12 months, I'm at the point where the current backup server is running out of space. I've just ordered a new server, which has 4x10TB drives in RAID10, so will provide 20TB of storage for backups.

Hardware data:

   CPU1: Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz (Cores 8)
   Memory:  31905 MB
   Disk /dev/sda: 10000 GB (=> 9314 GiB) doesn't contain a valid partition table
   Disk /dev/sdb: 10000 GB (=> 9314 GiB) doesn't contain a valid partition table
   Disk /dev/sdc: 10000 GB (=> 9314 GiB) doesn't contain a valid partition table
   Disk /dev/sdd: 10000 GB (=> 9314 GiB) doesn't contain a valid partition table
   Total capacity 36 TiB with 4 Disks

I'll be keeping the existing backup server online, but migrating new backups over to the new server, so there will be a period of overlap on the systems.

Once the new server is up and in use, I'll update the thread confirming when the backups for each of the servers have been switched over.


Server is up, raid10 array is syncing.

Drives in the new server
Device Model:     TOSHIBA MG06ACA10TEY
Serial Number:    8910A02PFWEF
LU WWN Device Id: 5 000039 998c80b2a
Firmware Version: 0103
User Capacity:    10,000,831,348,736 bytes [10.0 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    7200 rpm
Form Factor:      3.5 inches
Device is:        Not in smartctl database [for details use: -P showall]
ATA Version is:   ACS-3 T13/2161-D revision 5
SATA Version is:  SATA 3.3, 6.0 Gb/s (current: 6.0 Gb/s)
Local Time is:    Fri Oct 25 15:20:39 2019 UTC
SMART support is: Available - device has SMART capability.
SMART support is: Enabled


So, to further add redundancy, I've provisioned another dedicated backup server, so I can now split the backups over the 2 systems. For the shared hosting platform, where backups are incremental every 12 hours, these will now be split, so the 01:30 job runs against 1 server, and the 13:30 job runs on the other. This will provide a much better DR platform should it be needed.


Afternoon everyone, so following on from this, and the large fire at OVH that has brought backups back to the forefront of peoples minds, I've added a 3rd dedicated backup server to my infrastructure.

So backups now are spread across 2 providers, and 3 datacentres.

This adds an additional 5.5TB of RAID10 storage so I'm going to be increasing the frequency of backups from every 12 hours to 8 hours, which gives an additional 30 backup points per month to each hosting account (3 x incremental backups per 24 hour period, 30 day retention).

After a month or so, I'll review the storage usage, and if everything looks OK, will increase the retention period further (possibly to 60 days).