I've recently put together a server in a hurry and overlooked an important aspect - data integrity after power loss. I'm using Linux software RAID-1 with two 150GB WD Raptors but I'm worried that data could be lost due to having write-back cache enabled without a battery backup unit. I would rather not disable the write-back cache for performance reasons.
What is the cheapest way to get a battery backup solution for Linux software RAID? Do I have to use a hardware RAID card or do standalone battery backup units exist that can use existing motherboard SATA ports?
about the hd,there are two options, the first one is four 7200rpm sata to do raid 10, the second one is two 10000rpm sata to do raid 1, about the performance, which one will be better?
3w-9xxx: scsi0: AEN: INFO (0x04:0x0053): Battery capacity test is overdue:.
When I'm in the CLI console (tw_cli) and tries to test the battery, I'm seeing the following:
Quote:
//vpsXX1> /c0/bbu test Depending on the Storsave setting, performing the battery capacity test may disable the write cache on the controller /c0 for up to 24 hours. Do you want to continue ? Y|N [N]:
This is a live production server with client VPSs on it. Anyone here actually did 3ware battery test before on production system? Is it ok to do this? I'm seeking someone actually performed test operation before, not from someone just assumes it will be ok.
I'm currently in the process of ordering a new server and would like to throw another $50-$70 at the default SATA II 7k 250 GB to increase performance. The server will host a site similar to WHT (php, mysql, and some forum traffic ).
There are three options I can get for the price:
1. Add another SATA II 7k 250 GB and set up RAID 1 2. Add a 73GB 15k RPM SA-SCSI and put mySQL on it. No RAID. 3. Toss out the SATA II 7k and take two SATA 10k 150 GB instead. Put mySQL on one of them. No RAID.
Please keep in mind that the question is budget-related (I know I can get more if I spend an extra $200 but that's not what I want ). Which of the above will make me happiest?
I have a delicated server with "Intel RAID Controller: Intel(R) 82801ER SATA RAID Controller",I cannot find information on this raid.The 80 GB harddisk is about 4 years old,if one harddisk fail,I wonder if I can swap a new one bigger capacity and it will auto rebuilt?
It seems the HighPoint-RocketRAID 3120 is the cheapest 2 port hardware SATA2 RAID out there with advertised windows, linux, freebsd and mac support based on Marvell IOP and 128MB RAM. They say the drivers have been backported to centos redhat/kernels already.
I'm running into a problem with a relatively new (2 months old) server. I have just a few accounts on it, and I'm already noticing unusual loads, for the... load. After some benchmarking with bonnie++ (and plain old "dd") there is clearly a problem.
Isn't a write-speed over 7MB/s reasonable to expect? Also look at the low CPU times...
Anyway running the same test on a similar but older AND busier server showed much better results than this. In fact dd'ing a 1GB file from /dev/zero "finished" in about 10 seconds but then pegged the server at 99% iowait (wa) for a full three minutes (until done being written from cache I assume), bringing load to 15.00
That's all the info I have so far... the data center just replaced the card (which gave no errors) with no effect. Running these benchmark tests is about the extend of my hardware experience.
Planning to buy a server from softlayer, adding a single 300gb 15k scsi drive costs 100$/month and adding 4 250gb sata drives with raid-10 costs 90$/month
We now have a WHM Vps and also a Dedicated for reselling VPS both located in the UK. At the moment our WHM Vps backs up to an 'Unlimited shared hosting package' but we're sure we're going to be kicked off sooner or later because were using about 50GB storage. We were wondring what everyone else uses to backup? Another disk attached to the server?
Offsite? And how you deal with the extra bandwidth a backup would use.
We now need a solution that can backup our new VPS server and our WHM server. It needs to be in the UK/EU to comply with data protection.
im getting a server redone soon and looking for a small temp backup solution I got about 40gb of data that I need to backup and will need double in transfer. Also hopefully can run some basic web services to do somepicture hosting for auctions I run. Uses a few 100mb/mo. Im looking for rec. of cheap VPS hosting that offer big space/transfer and dont charge a really high setup fee I dont need any kind ofcontrol panel.
we have about 95 linux server with Cpanel and we use the backup solution in whm and send file on two Dell 2900 with 8 HD 250Gb sata in raid5 but we see that the backup servers are really slow in the data transfer i think that the raid 5 and all the ftp session slow it, what server backup solution do u can suggest for this structure?
what backup solution you all use. We plan on starting to use a backup solution but was wondering what the best one is. R1Soft seems to be pretty popular and I was wondering where all of you guys get your licenses from them. Also if anyone knows how much does a license for 1 backup server and 2 agent servers cost. I see it is like $500.00 at R1Soft directly but is that the only way to get it. Also is R1Soft very good? Please rate it 1 -10 in your reply.
I am about to order a VPS for some backup solutions for my websites, to save my backups etc.
Now, how should I do it ? Let's say one of my main sites are down (server is having a maintenance or the server went down for some unknown reasons, apache crashed, w/e), how should I do it ? I read something about name servers, but I am totally new to this stuff, as I've never dealt with it before.
And no, I do not want any management, it's just a testing box so I can learn it myself.
Anyone got any hints on what to do ? Pref. is if you can give me some links to so some sort of guide(s).
If an email server needs taking offline for a while, is there a simple solution that can be put in place that can catch and temporarily hold the email until it can be released when the server is back online?
Example: I have 1 server for hosting, 1 server as Dedicated Backup server (Pls don't recommend me outsourced backup server as I already got one)
I am looking for a solution which I am able to do daily backup while keeping low server load as well as able to restore it quickly when I need it. It's a cpanel servers.
I understand that CPanel own backup method will tar my files (but I have too many accounts) and it also takes a lot of my server CPU resources which slows down my hosting server.
I am now using rsync which does incremental backup that really works and I am happy about it but I paid $55 per month for 1 cpanel servers as I oursourced the rsync installation & server management backup. I have few servers and I don't find it cost effective.
Anyone here can suggest different kind of method which I have not known yet? Or I would really appreciate if someone do not mind to share installation procedure for rsync with me. I tried to google for it and find them all very shallow information. This is not a try-and-error.
backup service for my dedicated server that can do the following:
Take backups of the server without my laptop being involved when the backup takes place.
(So I can take a vacation for two weeks and have my laptop turned off - while backups still taking place).
Strangely I have found it impossible to find such a service ... All services I have looked at require my laptop is turned on and running some software while backup of server is takeing place.
I'd like to ask for opinion what is the best way to backup a client PC in Windows XP/Vista platform.
For example, each PC has a folder inside c:Server
Every 17:00 hours, the PC will FTP all data inside c:Server to backup server.
When it is done, the manager is able to access to his files & do his work remotely online via the server at night in his home. Another reason to have this backup is because they want to secure all the files from any viruses or any accidents in the office during non office hours as the files is important to them. The next morning, he is able to continue his work as normal when files are being merged.
