NAS Drive Replacement Strategy

pixeldroid

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Jan 14, 2008
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Hello:
I am involved in a small media organization, which creates media 24/7. We recently lost some invaluable archival data due to a hard drive failure and in following up on the data loss I've discovered that there is no comprehensive backup plan nor map of the data within the organization. Our data is not backed up offsite (as evidenced by the data we've already lost).
This discovery has not elicited any concern on the part of the IT personnel so I have been pushing them to address data security.

One of the proposed solutions is:

"...to have regular drive replacements at 80% of drive life expectancy. This will greatly reduce disk failures and also provide snapshots of our data which we can go back to. We will need some sort of off site storage system."

I'm pretty sure that the "80% drive replacement plan" applies to NAS drives (i.e. not to every computer in the organization). I have been involved in computing for 25 years, but I am not a backup specialist. It strikes me that this is not a good use of resources in that:
1. The value of using a drive as a "snapshot" would diminish quickly as the state of the data on the network changes.
2. We would not get full use of potentially good drives.

I'm curious if any network admins would comment.
Thanks.
 
You replace a drive when it fails, not based on some made up stat like "drive life expectancy". A drive may fail after only 3 days (or minutes), or last for 5 (or more) years. Multiple backup sets is the best plan, with backups made daily, weekly, monthly, and at least one set kept off-site at all times. It's also very important to have a disaster recovery plan that is periodically tested to make sure that the policies/procedures work, and your data can be restored with minimal downtime if/when needed.