You can certainly use snaplock. Not even an admin can delete snaplock data, unless they use their admin credentials to physically access the data center and steal the drives.
I know one petabyte-scale customer who planned for this scenario with SnapVault. The snapvault destination teams are managed by a different team than the production systems. They did it for protection against a rogue admin, not an intruder.
Not everyone has enough staff to grant separate credentials like this, but someone could at least ensure that the passwords aren't the same on each system. I know one customer where they split the responsibility. One person has the first half of the admin password, and another person has the second half. That would be tedious to manage everything like that, but for a relatively statically configured system like a Snapvault destination that might be doable. You can still use RBAC to create sub-administrative user accounts with the ability to perform most tasks, but restrict the ability to destroy a volume.
Personally, I'd also restrict the network ports. In my experience, most customer do leave the administrative ports open to the network at large, but there's a significant minority who only allow certain subnets to access the administrative interfaces. Ensure a primary and snapvault controller are on different subnets, and you get added security against intruders, but still don't forget about the chance of a malicious internal user with admin credentials.
From: toasters-bounces@teaparty.net toasters-bounces@teaparty.net On Behalf Of Chris Hague Sent: Tuesday, January 29, 2019 6:00 AM To: Toasters toasters@teaparty.net Subject: Cyber Security Question
NetApp Security WARNING: This is an external email. Do not click links or open attachments unless you recognize the sender and know the content is safe.
Hi All,
The scenario is;
An attacker has compromised security on your LAN and gained access to admin access on the NetApp filers. Subsequently they have wiped the primary and DR filers, including all SnapVault backups.
How could this be protected against?
KR, Chris. p.s. Apologies in advance for the insanely long signature!
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