Expand storage for Mainnet fleet

[jakubgs]

We are currently low on storage for EL nodes on nimbus.mainnet fleet. Storage usage on /docker volume varies from 77% up to 99% on some nodes.

We need to:

1. Request extension of existing storage from InnovaHosting.
   • Preferably with the same kind or at least size of NVMe.
2. Backup existing node data either locally, or remotely, or re-sync from scratch.
   • If re-syncing is picked BNs will need additional EL while the sync happens.
3. Re-create a RAID0 array using HP SmartArray CLI tool.
   • We don't care about data security since this can all be re-synced.
4. Restore node data backups or re-sync.

You can see notes on previous task like this here:

• Upgrade storage for mainnet fleet #184

[jakubgs]

Current state:

| Hostname                            | Volume  | Size | Used | Avail | Use% |
|-------------------------------------|---------|------|------|-------|------|
| erigon-01.ih-eu-mda1.nimbus.mainnet | /docker | 3.5T | 2.6T |  736G | 78% |
| erigon-02.ih-eu-mda1.nimbus.mainnet | /docker | 3.5T | 2.5T |  783G | 77% |
| geth-01.ih-eu-mda1.nimbus.mainnet   | /docker | 3.5T | 1.8T |  1.5T | 55% |
| geth-02.ih-eu-mda1.nimbus.mainnet   | /docker | 3.5T | 1.7T |  1.7T | 51% |

I have purged data of one Geth node on geth-01 and geth-02 as they were at 99% today and I wanted to buy us some time.