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4

You can do it a few ways- first, check a snapmirror status -l command will tell you the completion time for the last snapmirror as well as the current progress in KB and current lag (which you can use to calculate the current speed). If you have all your traffic on a specific interface, you can use ifstat to measure its current speed, but that's measured in ...


3

You should use snapshot autodelete. Without it, snapshots that exceed the reserve don't get deleted by default. Snapshot autodelete can be configured to behave several ways. The one I use is to set the trigger to "snap_reserve", meaning it'll delete any snapshots that exceed the reserve. We use snapshots as more convenient backups, but we still take backups ...


2

Can I "mount" Server2 to Server1s /var/www/files and make my Server1 Apache "think" it has 10% from Server1 HDD & the additional from Server2? Yes and no. You'd need to mount it to something like /var/www/files2. You can't just magically add storage to /var/www/files without expanding the filesystem (and underlying block storage). Look into ...


2

When you have a problem like this, you have to: obtain all requirements (latency, bandwidth, redundancy, reliability, security, required features...) analyse the current systems. If they are none, create test environments. Understand how all components work. Understand the current and the expected load. add system monitoring (with graphs) for both ...


2

Create a VM of the appropriate specification and disk size and let it live entirely in as a VM on the SAN. I'm not sure the other options you present are worth the complexity. How do you plan to take backups?


2

Due to how Linux raid behaves, using a three way raid1 vs a two way+hot spare raid1 setup gives: slightly lower random write performance, because arrays's access latency (seek time+rotational delay) is the worst of the the disks composing the array significantly better random read performance, as Linux raid is capable of issuing multiple, independent reads ...


2

find / -mount -type f -ls will list all files like with an output similar to ls -dils. find / -mount -type f -printf "%s %h/%f\n" will just print the size and the name. The -mount (or -xdev) option tells find to not descend into other mounted file systems (which / usually has at least a few of) and type -f makes sure only files and not directories ...


1

Yes, this is possible. I don't like the reasoning for it, since you're likely better off acquiring more disks. However, an online or offline virtual disk reconfiguration is definitely possible with your controller.



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