This turned out to be longer than I wanted, but it addresses several issues. I hope it helps someone:
The least expensive version of RAID uses two mirrored drives ( RAID 1 ). Others get a bit more complicated, but they are worth considering if you need larger amounts of storage. There are home NAS available that don't have RAID or mirroring. I would stay away from those, they are just a network attached disk drive. Any drive CAN be used as drives for RAID devices. There are ones that are specially designed for RAID use, like Western Digital RED drives, and there are others from different manufacturers. Backing up using something like CRASHPLAN or better yet, something that specifically supports your NAS device, is great. You can even backup a NAS manually to another NAS or even just a USB attached disk drive. On backups, any backup is good for 'awe shucks' problems (accidently overwrote or deleted a file). But for 'disaster recovery' (your house took a lightning hit and fried the electronics - it happened to me), the 3-2-1 backup scheme helps. 3 separate backups, on 2 different media, and 1 of the off-site. Personally, I use CRASHPLAN and backup machines to on-site USB attached drives and off the the CRASHPLAN data center. -- This is for me and my family, possibly not for your business. If you use CRASHPLAN and you have a good internet connection, you can backup to a computer at another location (like at grandma's house across town, or at the office, or a friends house). CRASHPLAN is not perfect and I am just a user and no ties other than that. It is cross platform compatible from Linux, Windows, and I think Apple (I don't have those). Pretty easy to set up. BTW, there are other great backup programs out there. And 'file sharing' programs really don't count (think Dropbox ... I use it too, but it is a different tool for a different need/use). On any backup, they must be monitored and tested. At least every few months restore a few files to make sure it is doing OK. Being a bit OCD and ADD, daily detail monitoring I knew was best (and fed my OCD), but it drove my ADD crazy! Don't stress over it, but do it regularly. Having software email me 'reports' when things are missed for a few days, it helps me a lot. Oh yes, I am cheap. CRASHPLAN has a 'family plan' for up to 10 machines for unlimited storage to use their central servers for one price. If you have some friends that use it, you can backup to THEIR CRASHPLAN machines for free (this is what you would use to backup to Grandma's or to a work computer. CRASHPLAN is NOT open source, but you can install it for free and give it a try. There are some good open source programs out there, but they tend to take a bit more effort to get set up. I will never claim to be an expert, but I retired from IT after 35 years, the first 20 as a developer, the last 15 as a sysadmin on mainframes, UNIX, and windows systems. The last 10 years was doing backups and disaster recovery principally. I hope this helps a little. Enjoy. On Wed, Nov 4, 2015 at 8:02 AM, John Thornton <j...@gnipsel.com> wrote: > Just looking up raid NAS and it looks like there are several levels of > raid and NAS is a Network Attached Storage. Is there something special > about NAS or can you do that with any hard drive? > > JT > > On 11/4/2015 7:35 AM, Jim Craig wrote: >> I have a raid NAS that I send all of my gcode to. Then I open it >> directly from the NAS into LinuxCNC. Then I don't have to worry about >> what machine has the latest code etc. The latest is always on the NAS. >> And it it is backed up. > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users -- ><> ... Jack The Four Boxes of Liberty - "There are four boxes to be used in the defense of liberty: soap, ballot, jury and ammo. Please use in that order." "Whatever you do, work at it with all your heart"... Colossians 3:23 "Anyone who has never made a mistake, has never tried anything new." - Albert Einstein "You don't manage people; you manage things. You lead people." - Admiral Grace Hopper, USN "Tell me and I forget. Teach me and I remember. Involve me and I learn." - Ben Franklin ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
