Search results
-
S
Windows 7 Striping instead of Intel ICH software RAID
Hi there, Recently bought a new rig, with the ASUS P9X79 motherboard. 2 Samsung 830 SSD's and 3 * 2TB 5400 SATA disks. I wanted these 3*2TB disks in RAID to make 1 big 6TB volume. Initially I configured the 3*2TB disks as RAID0 on the onboard Intel(R) C600 Series Chipset SATA RAID...- sammynl
- Thread
- Replies: 1
- Forum: Other Discussions
-
S
Swap out LSI card for Adaptec - Will I lose data
That requires a NAS/SAN with (real-time) mirroring, meaning you have a read-only copy of all you data on a second NAS/SAN. Than snapshot the mirror and back-up the snapshot. In a NAS environment you might consider snapshots as well not to help you in case of hardware failure but to go back to... -
S
Swap out LSI card for Adaptec - Will I lose data
RAID is not back-up, thinking it is will sooner or later result into a 100% dataloss. A good back-up is the only assurance you won't loose data, not RAID i'm afraid. -
S
Swap out LSI card for Adaptec - Will I lose data
Array metadata is NOT on the RAID controller, but always on the disks (persistant superblocks). So if you attach raid array member disks to a new identical controller the RAID array will remain intact. The controller will find a foreign array and most likely (depending on firmware) will ask you... -
S
New DIY NAS Build advice (OS) and opinion
Why not try Ubuntu 10.10 it's not as hard as it may seem it's free and performs great. One thing: before installing it disconnect the array drives and install it with only the OS drive connected. Otherwise it wont boot. With webmin installed you can do 95% of the administration from a... -
S
Ubuntu 10.10 RAID5 NAS Performance
Would like to share with the DIY folks that I've installed Ubuntu Server 10.10 X64 on a box and the performance is great. This Ubuntu version is much faster than 9.xx versions. When performing a data restore to the NAS (5*1 TB disks in the Linux RAID array with 256k chuncksize) from a... -
S
Ubuntu to Windows server switch
Hi Roush, Power consumption is 87W when running and 48W when disks idle. I use this power scheme: Not RAID5 with 6 disks but RAID0 with 5 disks and 1 seperate disks for critical data backup is a workable solution for me (data is at 3 places now, I have a 2TB 5400rpm seperate backup... -
S
Ubuntu to Windows server switch
Hi, I've always been happy with Ubuntu and Linux RAID, but trying to install the new Ubuntu 10.4 version was not fun at all. So I tried Windows 2003 Server R2 X64 Enterprise Edition and the performance is actually impressive! In the Ubuntu config I had 6*1TB for RAID5 and a seperate 2.5"... -
S
DIY NAS high performance vs. Vendor NAS low power consumption
Hi Roush, Im happy to do that I guess it's best to start a new thread for this? As soon as I've got some time left I'll see what I can do, all together it's a quite a lot of info if it has to be detailed. Regards, Sammy. -
S
DIY NAS high performance vs. Vendor NAS low power consumption
No I'm very happy with this config now :) I find out that spindown values > 240 don't work, up to 240 (=20 min) does work but larger values like 242 (1 hour) don't. Spindown will not work that easy on the OS disk for many reasons, like syslog entry's being written every once in a while... -
S
DIY NAS high performance vs. Vendor NAS low power consumption
Hi Jay, I was wondering about that also but it seems to work smoothly, the RAID device (virtual device) /dev/md0 is not being paused (always mounted) indeed, I guess because the OS disks is still running. It's just the physical disks in the array that spin down. The RAID config is on the... -
S
DIY NAS high performance vs. Vendor NAS low power consumption
First of all I really want to thank you guys :) for the reply's they were very useful! I followed your advice and bought a power consumption meter for 17 euro's. Powered on the NAS, afraid to see large values but... normal running state around 105 Watt and when writing large amounts of data... -
S
DIY NAS high performance vs. Vendor NAS low power consumption
After running a DIY NAS for almost a year now with free Ubuntu Server x64 (Linux RAID5 6*1TB) high performance (see image below) and low implementation costs, I am planning to switch to a vendor NAS for one reason only: low power consumption. Because a NAS usually runs 24/7, for a home user... -
S
RAID setup on NAS
Option is maybe to use Ubuntu Server on a DIY box because Linux RAID uses partitions on disks instead of disks. Usually 1 disk is 1 partition, but that is not necessarily so. Create a 2 disk / 2 partition RAID1 array, after that create partitions on remaining diskspaces and build a RAID0 array...- sammynl
- Post #3
- Forum: NAS Buying Advice
-
S
Linux raid 5 poor rebuilding performance?
You can build a 10 * 1 TB RAID5 array in 5 seconds :) using Webmin like this: Only when you suspect that a memberdisk is in bad condition, or your data is worth $100.000, you should use disk initialization. PS: If there is still persistent superblock info on your disks because you... -
S
Nas and HTPC running both Ubuntu, and Win7
I'd run VM Workstation ($$$) or VM Server (free) on Linux and create a Win7 VM. But that requires some RAM like 4GB, and best practice 2 NIC's so you dont have to NAT your Windows machine behind the Linux NIC, but offer it a dedicated NIC for streaming. -
S
Linux raid 5 poor rebuilding performance?
Hi there, Usually it takes that long, but you can create the array in Webmin without performing an initial diskcheck on all disks, and than it's up in seconds. Create the array in Webmin and use mdadm only for the formatting command. Sammy. -
S
Ubuntu 9.10 with ext4 filesystem on Linux RAID5, superb performance!
Hi zhamrock, Sorry for the late reply i haven't been here for a while but glad you found the bottleneck together with 00Roush and others:). Not surpised it's the client! Maybe nice to add to the thread, I found that the chunksize used for the array makes huge differences in performance... -
S
Ubuntu 9.10 with ext4 filesystem on Linux RAID5, superb performance!
Hi, that's correct :) the client is a Vista X64 SP2 machine with network mappings to samba shares running on a 4-disk RAID0 array (Samsung HD501LJ disks) hence client performance is always better than the RAID5 NAS performance. Test results are the maximum the NAS can do if the client is not... -
S
DIY NAS build - htpc case
Very nice config, but do keep in mind that most onboard raid (intel software raid ich?r) support max 4 drives per array that you create, even if the mobo has 5 or 6 sata ports. You might consider to buy a cheaper mobo without onboard raid and run linux raid instead, most likely it will also be...