I have an old Dell 1950 with one cpu (2 disks). Was 1+1G ram, added 16+16 and now have 34G. Two power supplies.
1- Never bothered to change SAS controller mode. 2- SATA disks (up to 2T of course) work perfectly, never used transposers. 3- First worked with an internal SSD (at internal SATA port, plus an addon power cable) for OS (always ZFS) + 2 SATA disks (ZFS raid) for data. 3 years, no problems. 4- Now i bought 2 SAS 1T, with OS on them, and also works fine. 5- Hot plugging disks is working fine. I actually increased capacity with bigger disks without stopping anything this way. Had 500G SATA before 1T SAS diks. I configure the 2 eths in OVS (openvswitch) bond mode, with several VLANS and internal networks (OVS IntPorts). In your case, with many SAS disks you will be fine with any configuration, e.g.: 3+3 x 2T = 6T ZFS raid, OS + data, the fastest combination, or 5+1 ZFS raidz, 10T space, with best capacity, or 4+2 ZFS raidz2, 8T space, also big, and safer. Do yourself a favour, and buy some decent SAS disks, at 7200rpm are very cheap. On Mon, Apr 19, 2021 at 6:08 PM Kyle Schmitt <[email protected]> wrote: > I run on R610s, so about the same generation I think. I use the > hardware raid for mirrored boot drive only, and NFS over 10G for VM > storage, which is on a seperate system running FreeBSD + ZFS. > > But for your case: the general rule for any storage system is don't > mix. You pick one and only one: hardware raid, software raid, zfs, > ceph, etc. The exceptions are for systems you almost definitely won't > be using like luster and gluster. > > You can still do hotplug with JBOD mode, at least on the dell hardware > I've used. I have no idea if it's officially supported or not. I do > know that I sometimes have to use the raid tools to bring in a new > drive when it's NOT in JBOD mode. > > In the 6ish years I've run ZFS I've only had one drive fail (pure > luck, not skill), and it was trivial to swap out and replace. > > --Kyle > > On Mon, Apr 19, 2021 at 7:59 AM Leandro Roggerone > <[email protected]> wrote: > > > > Hi guys , I received a very old del pe 2950 box. > > Fortunately it has 64 GB and a double power supply, so i'm thinking about > > using it with pve. > > After confirm with dell support about storage capacity: > > Max physical storage support is 2TB. > > Max virtual storage support is also 2TB. > > ## > > I was reading on previous emails at this mail list , about storage: > > "putting the controller in JBOD mode > > and install directly with ZFS software RAID." > > > > I always thought that raid hardware controller was the best option but , > > perhaps I can give it a try to ZFS software RAID with this old server > .... > > what do you think ? > > I have a bunch of 3.5" with odd capacities unused drives. > > I readed that zfs can merge them to get a more efficient use. > > What about hot replace / remove or insert a new drive ? > > Will it work without service disruption in production environments ? > > > > Regards, > > Leandro. > > > > < > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail > > > > Libre > > de virus. www.avast.com > > < > https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=webmail > > > > <#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2> > > _______________________________________________ > > pve-user mailing list > > [email protected] > > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user > > > > _______________________________________________ > pve-user mailing list > [email protected] > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user > > _______________________________________________ pve-user mailing list [email protected] https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user
