search for: hdds

Hello, I would like to use nas4free under xcp 1.6. I install it under full HVM using "other install media". Now I am attaching 4 hdds as external disks. The vm sees at most two hdds, I suppose because of bios support (1 boot + 1 cdrom + 2 hdds= 4 hdds). I need to use more disks, is it possible? If not, it seems to me a serious limit. Mario

I installed a Centos 4.x system using a lvm install across four HDDs. It is my first install using LVM. System had a power-failure and stopped booting up. A new trainee simply took out the HDDs and restarted the file-server on a fresh HDDs. Now the problemis that the four HDDs have data. But the order of the HDDs (of install....1st primary, 2nd primary etc.) is unk...

Hi Everyone, I am stack between two identical systems (2U Twin2, 4 nodes, SuperMicro) servers that have the same exact specs except for HDDs. These nodes will all either have Asterisk installed with CentOS or will have Asterisk install in virtual environment. Option 1: *12* x 3.5" HDD (3 HDDs per node) Option 2: *24* x 2.5" HDD (6 HDDs per node) **both options come to the same price. Other than the price difference (2.5&quot...

..., CPU Pentium MMX and K6-2/3, 128 to 384 MB RAM, Award 4.51PG Bios, Hard disks from 8 GB to 123.5 GB Realtek 8139D based NICs with PXE Boot-Proms PXELINUX 2.06 / MEMDISK 2.06: - fails to boot Compaq PC-DOS 3.31 PXELINUX 2.08 - succeeds to boot Compaq PC-DOS 3.31 with 0, 1, 2 and 3 hdds installed in system - fails to boot the same disk image with 4 hdds installed in system. Computer locks up completly after "Loading boot sector ... booting ...", cursor at beginning of next line. There is no difference on the values displayed before success or lockup ......

Hello Phil, Wednesday, September 16, 2020, 7:40:24 PM, you wrote: PP> You can achieve this with a hybrid RAID1 by mixing SSDs and HDDs, and PP> marking the HDD members as --write-mostly, meaning most of the reads PP> will come from the faster SSDs retaining much of the speed advantage, PP> but you have the redundancy of both SSDs and HDDs in the array. PP> Read performance is not far off native write performance of...

On 9/17/20 4:25 PM, Phil Perry wrote: > On 17/09/2020 13:35, Michael Schumacher wrote: >> Hello Phil, >> >> Wednesday, September 16, 2020, 7:40:24 PM, you wrote: >> >> PP> You can achieve this with a hybrid RAID1 by mixing SSDs and HDDs, and >> PP> marking the HDD members as --write-mostly, meaning most of the reads >> PP> will come from the faster SSDs retaining much of the speed advantage, >> PP> but you have the redundancy of both SSDs and HDDs in the array. >> >> PP> Read performance i...

Hello again. Do any of you have one of the 'new' HDDs with 4kB Sectors currently in use? I would upgrade to the 4kB disks but I don't know if this might be problematic as I intend to use ZFS w/ RAIDz or at least a classic RAID6. How might this affect performance under 5.5 and how do I go about setting up the alignment of the partitions I use? Kin...

Dear gurus, Three DELL SC430s were purchased by my company a few months back and I've been told that when they spoke with the DELL representatives, they were informed that these servers were fully RHEL 4.0 compatible. Specs of the servers:- - Pentium 4 - 2.8 GHz - 1 GB RAM - 2x 250GB SATA HDDs I tried installing CentOS 4.0 on it but it doesn't seem to be able to detect any hard disks. Has anyone out there successfully installed CentOS 4.0 on a Dell SC430? Please help. Your guidance is greatly appreciated. TIA, Andrew

...format. Our MX server is delivering ca. 30 GB new mails per day. Two IMAP proxy server get the connections from the users. Atm. without dovecot director. We've got around 700k connections per day (imap 200k / pop3 500k) The system is getting issues because the fileserver still have old slow HDDs. Users sometime get connection timeouts, because the fileserver can not answer fast enough due to I/O waiting lag. So we want to make a new system. We desire the new system to use mdbox format ( bigger files, less I/O) and replication through dovecot replication (active/active) instead of drbd. E...

From: Aleksandar Milivojevic <amilivojevic at pbl.ca> > I believe Intel 865 uses ICH5? If so, it is a sofware RAID emulation in > BIOS. You do not have RAID in hardware. It's just a marketing trick > that has nothing to do with reality. Exactomundo. Even AHCI is still software-driven. It is my sincerest hope that the term "FRAID" (or something else) catches on

...a Server for personal use, I want to virtualize a few servers(mail, web, ssh) and use it as a NAS, but I have a question if I can use Multiple RAID Arrays using the following HW: Intel Xeon Quad Core X3430 ASUS P7F-M LGA 1156 - LSI MegaRAID(integrated) - HighPoint RocketRAID 2640x1 2 Hitachi 500GB HDDs 4 Hitachi 1TB HDDs I want to use one array with the 2 500GB HDDs in RAID1 for the OS and for some VMs, and the other 4 1TB HDDs I want to create an array in RAID5 or RAID10 for file sharing across my home Network. I found a guide but it's a little bit outdated and it's for Debian... Do yo...

On 17/09/2020 13:35, Michael Schumacher wrote: > Hello Phil, > > Wednesday, September 16, 2020, 7:40:24 PM, you wrote: > > PP> You can achieve this with a hybrid RAID1 by mixing SSDs and HDDs, and > PP> marking the HDD members as --write-mostly, meaning most of the reads > PP> will come from the faster SSDs retaining much of the speed advantage, > PP> but you have the redundancy of both SSDs and HDDs in the array. > > PP> Read performance is not far off nativ...

...scs, HW-RAID6 was the way to go to increase reliability and speed. Today, I get the feeling, that traditional RAID is not the best option for SSDs. I am reading that all RAID members in SSD-arrays age synchronously so that the risk of a massive failure of more than one disk is more likely than with HDDs. There are many other concerns like excessive write load compared to non-raid systems, etc. Is there any common sense what disk layout should be used these days? I have been looking for some kind of master-slave system, where the (one or many) SSD is taking all writes and reads, but the slave HDD...

Hello all Nill experience with LVM. Have a Default Centos 4.4 install updated till a week ago with three HDDs. System's not booting up since my staff pulled out the plug due to a short circuit nearby. Machine is a PIII 550 MHz, with 3 HDDs 40 GB, 120 GB (Actually is bigger but my bios detects only upto 120 GB) & 20 GB...about half filled with data & the backup server taken out in the short ci...

...w laptop. I see that there are a number of higher-performance models (incidenatlly, they are also marketed as "gamer" ones) which offer two SATA 2.5" bays and an SD flash card slot. Vendors usually position the two-HDD bay part as either "get lots of capacity with RAID0 over two HDDs, or get some capacity and some performance by mixing one HDD with one SSD". Some vendors go as far as suggesting a highest performance with RAID0 over two SSDs. Now, if I were to use this for work with ZFS on an OpenSolaris-descendant OS, and I like my data enough to want it mirrored, but...

...to go to increase reliability > and speed. > Today, I get the feeling, that traditional RAID is not the best > option for SSDs. I am reading that all RAID members in SSD-arrays age > synchronously so that the risk of a massive failure of more than one > disk is more likely than with HDDs. There are many other concerns like > excessive write load compared to non-raid systems, etc. > > Is there any common sense what disk layout should be used these days? > > I have been looking for some kind of master-slave system, where the > (one or many) SSD is taking all write...

Hello, Recently we bought HP bl35 blades with LSI Logic SAS controllers. mpt* drivers works fine but I would like to somehow view status from command line. To monitor e.g. if one of the HDDs failed. I found mptutil on LSI Logic site but it just shows me configuration in quite cryptic form. Thanks, Mindaugas

...ot sure how to fix this. I've searched for uneeded logs, etc in /var/log and /tmp to no avail. The system is CentOS 5.2 and is not connected to the internet, serves as a local LAN server running stock stuff...sendmail, dovecot, apache..nothing strange or special going on. I have additional HDDs available if growing the partition is in order (would appreciate pointers to that, if applicable), but I'm really stumped as to where the space is being eaten up. Thanks in advance, -Ray My layout is: #df -h Filesystem Size Used Avail Use% Mounted on /dev/mapper/VolGroup00-Log...

...friendly name for my AMD Athlon 64 X2 6000+), and it can't see all my RAM (3 of 8GB). memtest86+ sees all my RAM, I think. Not sure if there's any other issues. Disks don't have proper file systems or OS installs on them as of yet. 2 discs were part of a RAID6 set of 4. 4xSATA HDDs and 2xIDE HDDs. Not sure if it's a BIOS setting, software problem, hardware newer than software, etc. I didn't notice the error message with previous BIOS version. Any pointers would be great. Knoppix v5.1.1 DVD on ASUS M2N32-SLI Deluxe with BIOS 1004. ======== Error message =======...

Hi, This is my current config: /dev/md0 -> 200 MB -> sda1 + sdd1 -> /boot /dev/md1 -> 36 GB -> sda2 + sdd2 -> form VolGroup00 with md2 /dev/md2 -> 18 GB -> sdb1 + sde1 -> form VolGroup00 with md1 sda,sdd -> 36 GB 10k SCSI HDDs sdb,sde -> 18 GB 10k SCSI HDDs I have added 2 36 GB 10K SCSI drives in it, they are detected as sdc and sdf. What should I do if I want to optimize disk space? The simplest solution would be to create /dev/md3 out of sdc1 and sdf1, and add it to the VG, and increase the size of my /vz logic...