finding advices for backup strategy

[Phu_Nguyen]

Hi All,

I am new to backup world, so it is helpful if you can give me advices on how to decide a backup strategy if the requirements are:

1. Off-site archieve backup yearly
2. Off-ste archieve backup monthly
3. Be able to restore at any point in time within 30days

Note: i am using BE2012 + 24 slot Dell tape library - LT05

What i think now is to creat media set as below and backup schedule accordingly

1. Yearly backup (Full backup) : at the last Friday of year ( Saturday and Sunday are weekend, no need to backup)
   - Overwrite protection : no overite
   - Append period : 2 days ( it takes 2 days for backup full system)
2. Monthly backup (full backup): at the last Friday of month. But if it is the last friday of year, yearly job will take place
   - Overwrite protection : 1 year ( this tape can be used for next year, for example "January")
   - Append period: 2 days
3.   Weekly backup (full backup): at every friday. But if it is the last friday of year or month, yearly or monthly job will take place
   - Friday1: OPP = ??? ; APP = 2 days 
   - Friday2: OPP =???; APP = 2days
   - Friday3   OPP= ???; APP = 2 days
   Note: i am sure which is the approriate number for OPP of friday1...3. Can you advices me on this?
4. Daily backup ( incremential backup)
   - Happen from Monday to Thurday
   - Use 16 tapes, each for Monday1, Tuesday1,..... Wednesday4, Thursday4.
   - OPP : 1months, APP: 1 day

Thanks in advance for your help.

Regards,

Tho

[pkh]

For your weekly tape, you need to keep it for a month to coincide with your daily backups.

[Phu_Nguyen]

Hi PKH,

Thank you for you reply.

If i set weekly media set with OPP = 4weeks, it will work perfectly for months that have 4 weeks, but how about months with 5 weeks ?

Week1 --->Friday1

Week2----->Friday2

week3----->Friday3

Week4 ----->Friday1 ( if OPP = 4 weeks, the job will fail since Friday1 is under overwrite protection)

Week5 ------>monthly backup

The above schedule is just my though. I am willing to learn if anyone has any better ideas.

Thanks,

Tho

[pkh · Accepted solution]

Unfortunately, there is no perfect way in an imperfect world to set the OPP.  For your example, you can reduce the OPP to 3 weeks to make the tape overwritable.