Replace Disks With Little Downtime

Feb 12, 2008

I colo a 1U machine with 2-36gig drives. They're not in RAID, and I have it set to rsync backups to a remote machine on a regular schedule. I have another remote machine functioning as a secondary DNS. Neither of these 2 are on a large upstream pipe. I just bought 2-147gig drives that I'd like to replace the 36g's with. How does this sound for a scenario to accomplish this with little downtime (pre-pardon my noob'ish ways):

1. Do a complete rsync of the filesystem to my remote machine as well as sync the mysql db's (to 1 remote drive).

2. Pop that single rsync'd drive into an external enclosure.

3. Travel to datacenter, once there, plug external drive into laptop and start up a VM that boots off of that drive.

4. Sync again so external drive has the most up-to-date data.

5. Change over IP's from colo to VM on laptop.

6. Shutdown and swap out drives in colo'd box with the new ones.

7. Setup new drives as RAID 1, install OS, then rsync filesystem over from laptop to new drives in colo'd box.

8. Change back IP's.

What am I missing, or is there an easier way without a 2nd colo/dedicated server? Currently, the colo'd machine is using about 1.3Mbit/sec outbound and it's running a low load.

View 5 Replies


ADVERTISEMENT

4 500 Gb Disks In Raid 10 Or 2 150 Gb Raptor Disks In Raid 1

Apr 27, 2008

I would like to hear which configuration you think will be better for a hosting server.

I have allready a raid controller in the server.

I am more concerned with security.

View 12 Replies View Related

15K Rpm SAS Disks Greater Than 146 GB

Nov 2, 2009

Currently we're using HP servers with 4 hot-swap bays that hold 3.5" Seagate Cheetah 15K RPM SAS disks, which we can get in 300, 450, and 600 GB flavors.

I'm looking at the HP DL380/385 models which use 2.5" SAS disks. About the only decent 15K RPM SAS disk I've found in 2.5" form is the Seagate Savvio, but it doesn't come any larger than 146 GB.

Anyone know of another enterprise-class SAS disk that has all of the following attributes: 2.5", 15K RPM, SAS, and at least 300 GB?

(Please, no 10K RPM or SATA recommendations like the WD Velociraptor. I won't consider anything that's not 15K RPM SAS.)

View 14 Replies View Related

Restore Disks

Jul 25, 2009

I do not have a restore disk for my Toshiba laptop and there is a virus on it. Can I use my restore disk from my HP computer? Both use windows XP?

View 4 Replies View Related

Best Servers Disks

Aug 31, 2009

Hardisk brands all had their ups and downs over time. So almost all brands made sometime bad drive models that failed (yes, even IBM)

I just finished reading an article that currently for servers it seems Seagate is the best (currently).

Some say Western, some say Maxtor, I heard everything. It seems nobody agrees or there isnt one that actually has the lowest failure rates.

It would be nice to hear from real experience on servers scenarios (not office, or desktop). The article also said Hitachi was one of the worst and my eyes just popped out. I found reviews of people here that said Hitachi where the bests. So to conclude it seems everybody has their own preference.

It would be nice to hear some Datacenters or people with tons of servers. I suppose recovery centers and datacenters probably have the best stats on which disks are failing the most.

View 14 Replies View Related

Mega Database Disks

Jul 27, 2007

How do you handle your mega space requirements for your high-use databases? Do any of you work with storage in the terabytes? If so, what kind of hardware and setup do you use?

Do you just have many commodity servers with maybe 100GB or so in each, or do you have some kind of shared RAID array set up? Or some kind of SAN?

Keep in mind I'm not talking about network storage (i.e. slow, personal use, file server) but rather high-speed intensive high-read/high-write database requirements.

What are the options for implementing such a solution?

What types of products fit such requirements? Could you comment on what things to look for when purchasing such a set of products?

View 10 Replies View Related

4 Hours To Replace Hardware

Apr 16, 2009

Recently a drive in one of my main box's has failed.

Ive contacted my provider, however there SLA states - 4 Hours for hardware replacement.

It takes 4 hours to replace a harddrive? What are they, sloths?

Anyone else had similar experiences when attempting to get drives replaced?

View 14 Replies View Related

Replace Hypervm/lxadmin

Jun 21, 2009

we know hypervm/lxadmin have some exploit. My server is ruuning with lxadmin. Is there any panel to replace it? I mean we can easily to reload OS, use File Manager like hypervm...

View 4 Replies View Related

Replace Larger HD For Raid 5

Jul 21, 2009

i have a msi server with three seagate HD,

and use seagate ST336607LC to do raid5.

the raid card is adaptec 2200S,

it is installed with centos with cpanel.

today,the websites shows 500 internal error and i asked the DC reboot,

minutes later,the websites run well.

but minutes later,it down again,and i ssh to reboot,

minutes,it shows file system problem,it seems readonly?...in my memory.

and i ask the DC to reboot again,

and i still can not login,and the DC staff tell me it shows with "operation system not found"...

and i go to DC,

it shows there is no logical drives... and operation system not found.

and i try to use ctrl+a to access raid control panel,

it shows there is no raid setting....

and i try to verify the hds in raid control panel,

it shows my 3rd hd has defect and ask if want to assign new block,

at begining,i chose no,it still can not load the os.

and then i chose yes to reassign the block and passing the verify,

but it still can not load the os.

i can not get any ST336607LC now,

i want to ask can i use larger HD to replace the 3rd hd?

if yes,after replacing and booting,

should i reset the raid configuation?

View 7 Replies View Related

Linux Hot Swapping Disks

May 30, 2008

I have a server with SATA- Hot Swap disks. I can do this, and swap out a disk, and re-partition

the new one, however the running Linux kernel hangs on to the old partition table in memory.

So even though the disk is not in use, and has been re-partitioned, I still need to reboot to

get the kernel to see the new partitions, and use them. Is there any way around this?

How to force kernel to re-read disk partitions on non-system disks?

View 2 Replies View Related

Mail-in Hard Disks

Mar 19, 2008

anyone know any managed dedicated server provider who we can mail our hard disks to? We have a small pipe to the Internet and this is the only avenue we've thought of.

Or perhaps another solution that we haven't thought of?

View 9 Replies View Related

Hot Swap Disks And CentOS

Dec 2, 2007

Up to now we've been using CentOS with SCSI/SATA disk shich weren't "hot swap", and now we're upgrading to a Dell PowerEdge 1950 revision III with SAS hot swap disks on a PERC RAID 6i (new model of raid controller from Dell).

OF COURSE, Dell ONLY supports Windows (and Red Hat at the very most on the Linux world) so we were told by a Microsoft Tech that to be able to extract a disk and replace with another it had to be done via software. (The software powers the disk down and then you replace it)

Does anyone use CentOS with hot swap SAS disks? Do you use any special software to monitor the disks and/or replace them?

View 6 Replies View Related

Disks For VPS - SATA Or SCSI

Oct 2, 2007

For building a house for, ie, 30 VPS, what kind of disks are you using? normal SATA? Raptor? SCSI?

I am going to use Quad-core CPU with 4-8GB RAM, but still wondering about the disks

View 7 Replies View Related

Hot Swap Disks + CentOS

Aug 7, 2007

We're about to buy a Dell Poweredge 1950 with hot swap disks in a raid 1 configuration (might even think about other raid combinations).

We will be installing Centos 5 (never tried it - normally use Centos 4) + control panel

The question is: what happens when a disk fails? How do we find out?(Apart from looking at the server) Any software notices?

Once noticed, what is the standard procedure to replace the disk? (Remember they are "hot swap") Do you just pull one out and replace it? Surely you have to rebuild the array...

View 9 Replies View Related

Inexpensive VPS To Replace Reseller Hosting

Nov 4, 2009

Currently paying 24.95/month with Hostgator on a reseller plan but am only using ~2Gb drive space and less than 2Gb or monthly transfer.

Would be nice to find a VPS that has CPanel for about the same price range.

View 13 Replies View Related

Serving Data From 2 Hard Disks

Mar 1, 2009

I have a server with 2 hard drives, say drive A and drive B. Right now all my files, database and data is on drive A, and drive B is empty. Since I have another drive available, I want to split the load between the two drives. I'm ok with having the web pages and the database on one drive. I mostly want to just have the data (I have about 500GB of data) split between the two drives. Note that I want to avoid duplicating the data. I want to have each file on either drive A XOR drive B.

Should I map a separate subdomain to drive B and then use that subdomain to serve the half of the data thats there? Is there something I can do with hard/soft links on the server so that even though the data is on 2 drives, users still use the same url to access data on either drive? Any other options?

View 6 Replies View Related

Do Hosts Stagger RAID Disks

Sep 14, 2008

if I order a RAID from a host, can I be confident that they're not going to put two of the same make, model and order in there?

Or at least run one of the disks for a significant time before using inserting into the RAID?

View 14 Replies View Related

Firmware Update For WDxxxxYS Disks.

Jan 11, 2007

Since purchasing 16-disk arrray NAS server 4-5 months ago, 5 disks have crashed so far. They are all WD4000YS. They're all "Raid Edition" which supposed to last longer than typical drives. It has been puzzling me until now.

It turns out that "Data Lifeguard" feature was confusing the RAID controller to believe that the disk was dead, hence the "failed" disk. AFAIK, Western Digital released firmware update on 01/09/07 that's supposed to fix this.

[url]p_faqid=1493&p_created=1168299631&p_sid=vfEX7qri&p_accessibility=0&p_redirect=&p_lva=&p_sp=cF9zcmNoPTEmcF9zb3J0X2J5PSZwX2dyaWRzb3J0PSZwX3J vd19jbnQ9MiZwX3Byb2RzPTAmcF9jYXRzPTAmcF9wdj0mcF9jdj0mcF9zZWFyY2hfdHlwZT1hbnN3ZXJzLnNlYXJjaF9mbmwmcF9wYWdlPTEmcF9zZWFyY2hfdGV4dD1XRDQwMDBZUw**&p_li=&p_ topview=1

So, if you have WDxxxxYS on your pre-production server, pull them out for a firmware update first!

For me, I can only swap "hot-spare" out for a firmware update. For other disks, I'll just have to wait for them to "drop" out of the array first. I cannot take this server offline at all. Any suggestions?

View 14 Replies View Related

Back-up Database And Replace The Existing One

Jan 4, 2007

I have a site but it was corrupted due to server problem with host. I have a back-up of DB in phpMySQL.

I am now installing the same script in new server and the site is now running.

The problem is, I want to use my back-up database and replace the existing one. How to do this?

View 2 Replies View Related

Find & Replace Of Text For Security...

Jul 25, 2007

My old VPS was hacked and an iframe html string was added to just about all the files on the server.

I've since then identified the vulnerability and moved to a new host and want to copy the accounts over but wanted to know if there was an easy way to search all the files for this html code and delete it?

For example, search all files for <iframe etc etc> and delete it?

I know this is probably rather simple...but I have no idea how to do it.

View 2 Replies View Related

Replace Linux With Windows Server Via Vkvm

Jun 1, 2009

I'm trying to replace my Linux OS with Windows Server 2003, which I already have a license.

I'm talking about OVH Kimsufi XL.

Following support's instructions, I booted my dedicated with netboot, specific with vkvm option.

Then I specified an ftp location, (where there is my "totally working" .iso), and I started the virtual session.

After some mins, a java windows appears, and starts the vnc session.

After usual linux loading, it stops on this :

Code:
VFS: Cannot open root device "801" or unknown-block(8,1)
Please append a correct "root=" boot option; here are the available partitions:
0300 244198584 hda driver: ide-gd
0301 5245191 hda1
0302 238428687 hda2
0303 522112 hda3

Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(8,1)

And, besides I cant write a letter!

View 13 Replies View Related

How To Set Up Cron Job To Replace Index File Every 3 Hours...

Apr 18, 2007

I would like to replace my index file every three hours, with a specified file on the server thats in a different folder (someone keeps putting unwanted stuff in my index file) Can someone explain to me how this is done?

View 2 Replies View Related

SSH Or Program How To File Replace Lots Of Files

Jan 14, 2007

I have anywhere between 80,000 - 90,000 webpages that have a single code into this. Unfortunately at the time the web developer I used didn't use PHP includes. So each .html file has the code in it.

I want a way so I can do a single command either a program or an SSH command can find the syntax in the files and replace it will code I have. Its just a single line of code that is basically for an adsense code, so the pub-blahblahblah etc..

Does anyone know of a SSH command I can use, or a program that will find and replace without manually opening up each file? 80k - 90k of opening files then find/replace will take forever!

View 11 Replies View Related

Moving My Install From Single Disk To Raid 1 Disks

Oct 27, 2009

If you want a quick run down as to WHY I want to do this, read here

Basically, my ISP could not get my server running stable on a simple raid 1 (or raid 5) so what it came down to was having them install my system on a single disk. I don't exactly like this, main reason being, if the system (or HDD) crashes, I'll end up with another several hours of down time... So here is my proposal:

Please Note: This will have to be accomplished on a live System (full backups!) over ssh as I don't trust my ISP to do things right as described in my post above.

Current Setup:
CentOS 5.3 x86_64
Dual Xeon 5410
16GB RAM
4x 750GB HDDs

/boot - /dev/sda1 - 512MB (real 471MB) ext3
/ - /dev/sda2 - 50GB (real 46GB) ext3
/home - /dev/sda3 - remaining space (real 642GB) ext3

swap - /dev/sdb1 - 32GB
/backup - /dev/sdb2 - remaining space (real 659GB) ext3

/dev/md0 - /dev/sdc + /dev/sdd - raid 1 (NOTE: uses entire disk, no partitions!)

Proposed Solution:

Code:
vgcreate -s 64M vg0 /dev/md0

lvcreate -L 512M -n lvboot vg0
lvcreate -L 50G -n lvroot vg0
lvcreate -L 5G -n lvtmp vg0
lvcreate --extent 100%FREE -n lvhome vg0

mkfs -t ext3 -m 1 /dev/vg0/lvboot
mkfs -t ext3 -m 1 /dev/vg0/lvroot
mkfs -t ext3 -m 1 /dev/vg0/lvtmp
mkfs -t ext3 -m 1 /dev/vg0/lvhome
Now, I'd like to 'init 1' at this stage but I can't, so I won't (possible solutions?? Possible to umount the / partition??)

Assuming I'd have to do this on a fully live system, I'd disable all services that I can

Code:
/etc/init.d/sendmail stop
/etc/init.d/postfix stop
/etc/init.d/saslauthd stop
/etc/init.d/httpd stop
/etc/init.d/mysql stop
/etc/init.d/courier-authlib stop
/etc/init.d/courier-imap stop
/etc/init.d/amavisd stop
/etc/init.d/clamd stop
/etc/init.d/pure-ftpd stop
/etc/init.d/fail2ban stop
/etc/init.d/syslogd stop
Then we copy all of our data from the single partitions to the raid disks

Code:
mkdir /mnt/newroot
mkdir /mnt/newroot/boot
mkdir /mnt/newroot/tmp
mkdir /mnt/newroot/home

Code:
mount /dev/vg0/lvboot /mnt/newroot/boot
mount /dev/vg0/lvroot /mnt/newroot/root
mount /dev/vg0/lvtmp /mnt/newroot/tmp
mount /dev/vg0/lvhome /mnt/newroot/home
(I think I covered everything)

Code:
umount -l /dev/sda1 (/boot)
umount -l /dev/sda3 (/home)
cp -dpRx /* /mnt/newroot/
mount /dev/sda1 /boot
cp -dpRx /boot/* /mnt/newroot/boot/
mount /dev/sda3 /home
cp -dpRx /home/* /mnt/newroot/home/
Once we have everything copied, update /etc/fstab and /etc/mtab to reflect the changes we made:
vi /etc/fstab

Code:
LABEL=/home /home ext3 defaults 0 3
LABEL=/ / ext3 defaults,usrquota,grpquota 1 1
LABEL=/boot /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sdb1 swap swap defaults 0 0
To

Code:
/dev/vg0/lvhome /home ext3 defaults 0 3
/dev/vg0/lvroot / ext3 defaults,usrquota,grpquota 1 1
/dev/vg0/lvboot /boot ext3 defaults 1 2
tmpfs /dev/shm tmpfs defaults 0 0
devpts /dev/pts devpts gid=5,mode=620 0 0
sysfs /sys sysfs defaults 0 0
proc /proc proc defaults 0 0
LABEL=SWAP-sdb1 swap swap defaults 0 0
Moving on, we make a fail safe in the event this doesn't work out:
vi /boot/grub/menu.lst

find

Code:
default=0
add after

Code:
fallback=1
Then we find (in the same file):

Code:
title CentOS (2.6.18-164.el5)
root (hd1,0)
kernel /vmlinuz-2.6.18-164.el5 ro root=/dev/vg0/vgroot
initrd /initrd-2.6.18-164.el5.img
Add before:

Code:
title CentOS (2.6.18-164.el5)
root (hd3,0)
kernel /vmlinuz-2.6.18-164.el5 ro root=/dev/sda2
initrd /initrd-2.6.18-164.el5.img
Where (hd3,0) is /dev/sdc. If the system fails to boot to the raid then it'll auto boot to the single disk (/dev/sda)

then update my ramdisk:
mv /boot/initrd-`uname -r`.img /boot/initrd-`uname -r`.img_bak
mkinitrd /boot/initrd-`uname -r`.img `uname -r`

And now to set up grub...

Code:
grub
> root (hd0,0)
> setup (hd0)
we should see something like this:
Checking if "/boot/grub/stage1" exists... no
Checking if "/grub/stage1" exists... yes
Checking if "/grub/stage2" exists... yes
Checking if "/grub/e2fs_stage1_5" exists... yes
Running "embed /grub/e2fs_stage1_5 (hd0)"... 15 sectors are embedded.
succeeded
Running "install /grub/stage1 (hd0) (hd0)1+15 p (hd0,0)/grub/stage2 /grub/grub.conf"... succeeded
Done.


Code:
> root (hd3,0)
> setup (hd3)
Again, we should see something like this:
Checking if "/boot/grub/stage1" exists... no
Checking if "/grub/stage1" exists... yes
Checking if "/grub/stage2" exists... yes
Checking if "/grub/e2fs_stage1_5" exists... yes
Running "embed /grub/e2fs_stage1_5 (hd1)"... 15 sectors are embedded.
succeeded
Running "install /grub/stage1 (hd1) (hd1)1+15 p (hd1,0)/grub/stage2 /grub/grub.conf"... succeeded
Done.

Code:
> quit
From here I think we're ready to reboot, can't see where I missed anything. If all goes well then I should see my volume groups listed in 'df- h'

View 0 Replies View Related

Plesk 11.x / Linux :: Can't Restore Backup And Replace Files

May 25, 2014

I am trying to restore a backup that Parallels Plesk made (latest version) and I used to get the option at some point to replace everything. Now, I only get the options to select what I want to restore and it fails because it says certain things, domains, content is already there.

I can't find the option anymore that allows me to say replace everything during the backup. Was that removed? If so, I'd really....really like it back.

Warning:
Failed deployment of domain localhost.localdomain
Warning:
Execution of /usr/local/psa/admin/plib/api-cli/domain.php --create localhost.localdomain -owner admin -do-not-apply-skeleton -notify false -guid 4fe5de63-3103-4fa0-a01c-04894e167107 -vendor-guid 75b2fa01-6c6e-4cb2-8f1b-9c69757fd3ec -creation-date 2014-02-13 -ip 46.165.251.98 -ignore-nonexistent-options failed with return code 1.
Stderr is
An error occurred during domain creation: There are no available resources of this type (domains) left. Requested: 1; available: 0.

View 1 Replies View Related

Plesk Automation :: Backup Server Node With Two Disks

Jun 10, 2015

Due to data center limitations, I am restricted to 100GB on my primary disk but can have up to 2TB on a second disk.Is it possible to have the backup node use the second disk instead of the primary disk?Also is it possible to have multiple to have multiple backup nodes?

View 3 Replies View Related

Plesk 11.x / Windows :: Possible To Replace Express Edition With Web In Panel?

Feb 23, 2014

I have one customer installed with plesk 11.5 + power pack integrated with mssql 2008 express on his server.But now client want to install Mssql 2008 web edition. Is this possible to replace the express edition with web in plesk panel?

View 1 Replies View Related

Are There Any Stable Cloud Hosting Options To Replace Dedicated Server?

Oct 4, 2008

I've got a dedicated server through Liquid Web. I can't say enough about how great the reliability and service has been since I switched over to them a number of months ago.

Nevertheless, with the advent of cloud hosting, I'm intrigued by the idea of paying for what I actually use on a server rather than having way more capacity than I need 90% of the day.

I've looked around here and there's a bit of talk about it but it doesn't seem like folks are scrambling into it and it also appears that the offereings are still relatively immature.

I really don't have the time to devote to tweaking, etc or figuring out something really complicated.

I'll stick to my dedicated server if it means tons of extra work or potential downtime or massive frustration but I wanted to get some feedback from the community about whether or not there are some stable cloud hosting options that are emerging that might be worth considering.

View 14 Replies View Related







Copyrights 2005-15 www.BigResource.com, All rights reserved