proxmox ext4 vs xfs. And then there is an index that will tell you at what places the data of that file is stored. proxmox ext4 vs xfs

 
 And then there is an index that will tell you at what places the data of that file is storedproxmox ext4 vs xfs EXT4 is just a file system, as NTFS is - it doesn't really do anything for a NAS and would require either hardware or software to add some flavor

XFS distributes inodes evenly across the entire file system. You can check in Proxmox/Your node/Disks. sdb is Proxmox and the rest are in a raidz zpool named Asgard. xfs /dev/zvol/zdata/myvol, mounted it and sent in a 2 MB/s stream via pv again. ZFS was developed with the server market in mind, so external drives which you disconnect often and use ATA to USB translation weren’t accounted for as a use case for it. Austria/Graz. You probably don’t want to run either for speed. ZFS is faster than ext4, and is a great filesystem candidate for boot partitions! I would go with ZFS, and not look back. Results were the same, +/- 10% Yes you can snapshot a zvol like anything else in ZFS. It has zero protection against bit rot (either detection or correction). When dealing with multi-disk configurations and RAID, the ZFS file-system on Linux can begin to outperform EXT4 at least in some configurations. How to convert existing filesystem from XFS to Ext4 or Ext4 to XFS? Solution Verified - Updated 2023-02-22T15:39:33+00:00 - Englishto edit the disk. XFS is a robust and mature 64-bit journaling file system that supports very large files and file systems on a single host. The way I have gone about this (following the wiki) is summarized by the following: First i went to the VM page via the proxmox web browser control panel. service (7. Install proxmox backup server with ext4 inside proxmox. 2. XFS is optimized for large file transfers and parallel I/O operations, while ext4 is optimized for general-purpose use with a focus on security. For example, if a BTRFS file system is mounted at /mnt/data2 and its pve-storage. Is there any way of converting file system without any configuration changes in mongo? I tried below steps: detach disk; unmount dir; attach disk; create partition with xfs file system; changes on fstab file; mount dirFinally found a solution : parted -s -a optimal /dev/sda mklabel gpt -- mkpart primary ext4 1 -1s. On lower thread counts, it’s as much as 50% faster than EXT4. Proxmox installed, using ZFS on your NVME. Aug 1, 2021. 4. or use software raid. 2 ensure data is reliably backed up and. NEW: Version 8. Happy server building!In an other hand if i install proxmox backup server on ext4 inside a VM hosted directly on ZFS of proxmox VE i can use snapshot of the whole proxmox backup server or even zfs replication for maintenance purpose. This can make differences as there. 49. 15 comments. ZFS, the Zettabyte file system, was developed as part of the Solaris operating system created by Sun Microsystems. Ich selbst nehme da der Einfachheit und. xfs is really nice and reliable. This takes you to the Proxmox Virtual Environment Archive that stores ISO images and official documentation. start a file-restore, try to open a disk. XFS was more fragile, but the issue seems to be fixed. You cannot go beyond that. Note that when adding a directory as a BTRFS storage, which is not itself also the mount point, it is highly recommended to specify the actual mount point via the is_mountpoint option. If the LVM has no spaces left or not using thin provisioning then it's stuck. I don't know anything about XFS (I thought unRaid was entirely btrfs before this thread) ZFS is pretty reliable and very mature. 2. ext4 vs brtfs vs zfs vs xfs performance. Example: Dropbox is hard-coded to use ext4, so will refuse to work on ZFS and BTRFS. . Proxmox VE Linux kernel with KVM and LXC support. ext4 4 threads: 74 MiB/sec. Basically, LVM with XFS and swap. 2 drive, 1 Gold for Movies, and 3 reds with the TV Shows balanced appropriately, figuring less usage on them individually) --or-- throwing 1x Gold in and. I think. all kinds for nice features (like extents, subsecond timestamps) which ext3 does not have. . But unless you intend to use these features, and know how to use them, they are useless. Utilice. Looking for advise on how that should be setup, from a storage perspective and VM/Container. 3 XFS. $ sudo resize2fs /dev/vda1 resize2fs 1. Add the storage space to Proxmox. As per Proxmox wiki "On file based storages, snapshots are possible with the qcow2 format. g. Crucial P3 2TB PCIe Gen3 3D NAND NVMe M. For LXC, Proxmox uses ZFS subvols, but ZFS subvols cannot be formatted with a different filesystem. Replication uses snapshots to minimize traffic sent over the. Specs at a glance: Summer 2019 Storage Hot Rod, as tested. You could later add another disk and turn that into the equivalent of raid 1 by adding it to the existing vdev, or raid 0 by adding it as another single disk vdev. raid-10 mit 6 Platten; oder SSDs, oder Cache). gbr: Is there a way to convert the filesystem to EXT4? There are tools like fstransform but I didn’t test them. ZFS also offers data integrity, not just physical redundancy. Compressing the data is definitely worth it since there is no speed penalty. Then I selected the "Hardware" tab and selected "Hard Disk" and then clicked the resize. ;-) Proxmox install handles it well, can install XFS from the start. If you use Debian, Ubuntu, or Fedora Workstation, the installer defaults to ext4. Sistemas de archivos en red 1. So that's what most Linux users would be familiar with. "EXT4 does not support concurrent writes, XFS does" (But) EXT4 is more "mainline" Putting ZFS on hardware RAID is a bad idea. XFS and ext4 aren't that different. With a decent CPU transparent compression can even improve the performance. For ID give your drive a name, for Directory enter the path to your mount point, then select what you will be using this. (You can also use RAW or something else, but this removes a lot of the benefits of things like Thin Provisioning. A execução do comando quotacheck em um sistema de. Oct 17, 2021. The XFS one on the other hand take around 11-13 hours!But Proxmox won't anyway. ext4. #6. XFS was more fragile, but the issue seems to be fixed. But unlike EXT4, you'll gain the ability to. XFS fue desarrollado originalmente a principios de. El sistema de archivos XFS 27. Since we have used a Filebench workloads for testing, our idea was to find the best FS for each test. Fourth: besides all the above points, yes, ZFS can have a slightly worse performance depending on these cases, compared to simpler file systems like ext4 or xfs. Create a zvol, use it as your VM disk. While it is possible to migrate from ext4 to XFS, it. Still, I am exclusively use XFS where there is no diverse media under the system (SATA/SAS only, or SSD only), and had no real problem for decades, since it's simple and it's fast. I have a 20. Yes, both BTRFS and ZFS have advanced features that are missing in EXT4. For Proxmox VE versions up to 4. 1. BTRFS. Select the VM or container, and click the Snapshots tab. One can make XFS "maximal INode space percentage" grow, as long there's enough space. This was around a 6TB chain and on XFS it took around 10 minutes or so t upgrade. 0 moved to XFS in 2014. Prior using of the command EFI partition should be the second one as stated before (therefore in my case sdb2). The client uses the following format to specify a datastore repository on the backup server (where username is specified in the form of user @ realm ): [ [username@]server [:port]:]datastore. It's an improved version of the older Ext3 file system. They provide a great solution for managing large datasets more efficiently than other traditional linear. Centos7 on host. One of the main reasons the XFS file system is used is for its support of large chunks of data. ;-). If this were ext4, resizing the volumes would have solved the problem. choose d to delete existing partition (you might need to do it several times, until there is no partition anymore) then w to write the deletion. As pointed out by the comments deduplication does not make sense as Proxmox stores backups in binary chunks (mostly of 4MiB) and does the deduplication and most of the. Elegir entre sistemas de archivos de red y de almacenamiento compartido 27. 4, the native Linux kernel port of the ZFS file system is introduced as optional file system and also as an additional selection for the root file system. The installer will auto-select the installed disk drive, as shown in the following screenshot: The Advanced Options include some ZFS performance-related configurations such as compress, checksum, and ashift or. If this works your good to go. Compared to ext4, XFS has unlimited inode allocation, advanced allocation hinting (if you need it) and, in recent version, reflink support (but they need to be explicitly enabled in. Replication is easy. • 2 yr. Clean installs of Ubuntu 19. ZFS gives you snapshots, flexible subvolumes, zvols for VMs, and if you have something with a large ZFS disk you can use ZFS to do easy backups to it with native send/receive abilities. My question is, since I have a single boot disk, would it. And you might just as well use EXT4. Linux File System Comparison: XFS vs. EXT4 being the “safer” choice of the two, it is by the most commonly used FS in linux based systems, and most applications are developed and tested on EXT4. Note the use of ‘--’, to prevent the following ‘-1s’ last-sector indicator from being interpreted. ext4 파일 시스템은 Red Hat Enterprise Linux 5에서 사용 가능한 기본 ext3 파일 시스템의 확장된 버전입니다. 5 Gbps, Proxmox will max out at 1. Install Debian: 32GB root (ext4), 16GB swap, and 512MB boot in NVMe. Select I agree on the EULA 8. Tried all three, following is the stats - XFS #pveperf /vmdiskProxmox VE Community Subscription 4 CPUs/year. This is necessary should you make. If you make changes and decide they were a bad idea, you can rollback your snapshot. Oct. EvertM. 3 with zfs-2. Without that, probably just noatime. The first step is to download the Proxmox VE ISO image. ZFS dedup needs a lot of memory. Once you have selected Directory it is time to fill out some info. Get your own in 60 seconds. You're better off using a regular SAS controller and then letting ZFS do RAIDZ (aka RAID5). 1. I have a high end consumer unit (i9-13900K, 64GB DDR5 RAM, 4TB WD SN850X NVMe), I know it total overkill but I want something that can resync quickly new clients since I like to tinker. See this. btrfs is a filesystem that has logical volume management capabilities. €420,00EUR. We assume the USB HDD is already formatted, connected to PVE and Directory created/mounted on PVE. BTRFS and ZFS are metadata vs. ext4 is slow. But. 52TB I want to dedicate to GlusterFS (which will then be linked to k8s nodes running on the VMs through a storage class). Select Proxmox Backup Server from the dropdown menu. 527660] XFS: loop5(22218) possible memory allocation deadlock size 44960 in kmem_alloc (mode:0x2400240) As soon as I get. Three identical nodes, each with 256 GB nvme + 256 GB sata. Ext4 limits the number of inodes per group to control fragmentation. GitHub. Move/Migrate from 1 to 3. Você pode então configurar a aplicação de cotas usando uma opção de montagem. With Proxmox you need a reliable OS/boot drive more than a fast one. However, Linux limits ZFS file system capacity to 16 tebibytes. And then there is an index that will tell you at what places the data of that file is stored. Below is a very short guide detailing how to remove the local-lvm area while using XFS. Even if I'm not running Proxmox it's my preferred storage setup. LVM is a separate volume manager, providing flexibility in storage allocation without ZFS’s advanced features. ZFS certainly can provide higher levels of growth and resiliency vs ext4/xfs. Enter the username as root@pam, the root user’s password, then enter the datastore name that we created earlier. But I think you should use directory for anything other than normal filesystem like ext4. In doing so I’m rebuilding the entire box. ext4 with m=0 ext4 with m=0 and T=largefile4 xfs with crc=0 mounted them with: defaults,noatime defaults,noatime,discard defaults,noatime results show really no difference between first two, while plotting 4 at a time: time is around 8-9 hours. They perform differently for some specific workloads like creating or deleting tenthousands of files / folders. It is the default file system in Red Hat Enterprise Linux 7. LVM is a logical volume manager - it is not a filesystem. cfg. fiveangle. I've never had an issue with either, and currently run btrfs + luks. This includes workload that creates or deletes large numbers of small files in a single thread. EarthyFeet. Proxmox VE Linux kernel with KVM and LXC support Complete toolset for administering virtual machines, containers, the host system, clusters and all necessary resources XFS与Ext4性能比较. For ext4 file system, use resize2fs. That bug apart, any delayed allocation filesystem (ext4 and btrfs included) will lose a significant number or un-synched data in case of uncontrolled poweroff. For more than 3 disks, or a spinning disk with ssd, zfs starts to look very interesting. I’d still choose ZFS. Category: HOWTO. XFS has a few features that ext4 has not like CoW but it can't be shrinked while ext4 can. The reason is simple. Latency for both XFS and EXT4 were comparable in. Proxmox running ZFS. Edit: Got your question wrong. But running zfs on raid shouldn't lead to anymore data loss than using something like ext4. . 对应的io利用率 xfs 明显比ext4低,但是cpu 比较高 如果qps tps 在5000以下 etf4 和xfs系统无明显差异。. New features and capabilities in Proxmox Backup Server 2. + Stable software updates. Originally I was going to use EXT4 on KVM til I ran across ProxMox (and ZFS). Starting with Proxmox VE 3. Roopee. zfs is not for serious use (or is it in the kernel yet?). For really big data, you’d probably end up looking at shared storage, which by default means GFS2 on RHEL 7, except that for Hadoop you’d use HDFS or GlusterFS. The device to convert must be unmountable so you have to boot ie from a live iso to convert your NethServer root filesystem. Festplattenkonfiguration -//- zfs-RAID0 -//- EXT4. 0 is in the pre-release stage now and includes TRIM,) and I don't see you writing enough data to it in that time to trash the drive. Although swap on the SD Card isn't ideal, putting more ram in the system is far more efficient than chasing faster OS/boot drives. I have a RHEL7 box at work with a completely misconfigured partition scheme with XFS. Starting from version 4. You can create an ext4 or xfs filesystem on a disk using fs create, or by navigating to Administration -> Storage/Disks -> Directory in the web interface and creating one from there. 高并发压力下 xfs 的性能比 ext4 高 5-10% 左右。. But I'm still worried about fragmentation for the VMs, so for my next build I'll choose EXT4. I find the VM management on Proxmox to be much better than Unraid. 1. 3. On the other hand, EXT4 handled contended file locks about 30% faster than XFS. As cotas XFS não são uma opção remountable. ZFS is a combined file system and logical volume manager designed by Sun Microsystems. The step I did from UI was "Datacenter" > "Storage" > "Ådd" > "Directory". It's not the most cutting-edge file system, but that's good: It means Ext4 is rock-solid and stable. 2: On file based storages, snapshots are possible with the qcow2 format. Compared to classic RAID1, modern FS have two other advantages: - RAID1 is whole device. Since Proxmox VE 7 does not offer out-of-the-box support for mdraid (there is support for ZFS RAID-1, though), I had to come up with a solution to migrate the base installation to an. Note 2: The easiest way to mount a USB HDD on the PVE host is to have it formatted beforehand, we can use any existing Linux (Ubuntu/Debian/CentOS etc. using ESXi and Proxmox hypervisors on identical hardware, same VM parameters and the same guest OS – Linux Ubuntu 20. Complete operating system (Debian Linux, 64-bit) Proxmox Linux kernel with ZFS support. Earlier today, I was installing Heimdall and trying to get it working in a container was presenting a challenge because a guide I was following lacked thorough details. There are results for “single file” with O_DIRECT case (sysbench fileio 16 KiB blocksize random write workload): ext4 1 thread: 87 MiB/sec. Here is a look at the Linux 5. Don't worry about errors or failure, I use a backup to an external hard drive daily. While RAID 5 and 6 can be compared to RAID Z. The Proxmox VE installer, which partitions the local disk(s) with ext4, XFS, BTRFS (technology preview), or ZFS and installs the operating system. In the table you will see "EFI" on your new drive under Usage column. (Equivalent to running update-grub on systems with ext4 or xfs on root). I'm installing Proxmox Virtual Environment on a Dell PowerEdge R730 with a Dell PowerEdge RAID Controller (PERC) H730 Mini Hardware RAID controller and eight 3TB 7. If only a single drive in a cache pool i tend to use xfs as btrfs is ungodly slow in terms of performance by comparison. However, to be honest, it’s not the best Linux file system comparing to other Linux file systems. ago. yes, even after serial crashing. €420,00EUR. Select the Directory type. Copy-on-Write (CoW): ZFS is a Copy-on-Write filesystem and works quite different to a classic filesystem like FAT32 or NTFS. g. We are looking for the best filesystem for the purpose of RAID1 host partitions. If I were doing that today, I would do a bake-off of OverlayFS vs. by carum carvi » Sat Apr 25, 2020 1:14 am. It has some advantages over EXT4. (The equivalent to running update-grub systems with ext4 or xfs on root). I try to install Ubuntu Server and when the installation process is running, usually in last step or choose disk installation, it cause the Proxmox host frozen. Improve this answer. Then i manually setup proxmox and after that, i create a lv as a lvm-thin with the unused storage of the volume group. domanpanda • 2 yr. I use lvm snapshots only for the root partition (/var, /home and /boot are on a different partitions) and I have a pacman hook that does a snapshot when doing an upgrade, install or when removing packages (it takes about 2 seconds). Please. XFS was surely a slow-FS on metadata operations, but it has been fixed recently as well. 1 Login to Proxmox web gui. I've never had an issue with either, and currently run btrfs + luks. Comparación de XFS y ext4 1. This means that you have access to the entire range of Debian packages, and that the base system is well documented. docker successfully installed and running but that warning message appears in the proxmox host and I don't understand, why?! In the docker lxc, docker info shows that overlay2 is used. Various internet sources suggest that XFS is faster and better, but taking into account that they also suggest that EXT4 is. Note: If you have used xfs, replace ext4 with xfs. Here is the basic command for ext4: # resize2fs /dev/vg00/sales-lv 3T Reduce capacity. The first, and the biggest difference between OpenMediaVault and TrueNAS is the file systems that they use. 1. Sorry to revive this old thread, but I had to ask: Am I wrong to think that the main reason for ZFS never getting into the Linux Kernel is actually a license problem? See full list on linuxopsys. Cheaper SSD/USB/SD cards tend to get eaten up by Proxmox, hence the High Endurance. e. To start adding your new drive to Proxmox web interface select Datacenter then select Storage. 1. What I used for Proxmox is a mix of ext4 and ZFS, both had differing results, but vastly better performance than those shared from Harvester. Remaining 2. The four hard drives used for testing were 6TB Seagate IronWolf NAS (ST6000VN0033. michaelpaoli 2 yr. Both ext4 and XFS should be able to handle it. El sistema de archivos es mayor de 2 TiB con inodos de 512 bytes. Things like snapshots, copy-on-write, checksums and more. You either copy everything twice or not. You can check in Proxmox/Your node/Disks. If i am using ZFS with proxmox, then the lv with the lvm-thin will be a zfs pool. Through many years of development, it is one of the most stable file systems. In conclusion, it is clear that xfs and zfs offer different advantages depending on the user’s needs. The problem here is that overlay2 only supports EXT4 and XFS as backing filesystems, not ZFS. Re: EXT4 vs. The ext4 file system is still fully supported in Red Hat Enterprise Linux 7 and can be selected at installation. With the noatime option, the access timestamps on the filesystem are not updated. Active Member. Then I was thinking about: 1. One caveat I can think of is /etc/fstab and some other things may be somewhat different for ZFS root and so should probably not be transferred over. 42. This depends on the consumer-grade nature of your disk, which lacks any powerloss-protected writeback cache. In doing so I’m rebuilding the entire box. This includes workload that creates or deletes. On my old installation (Upgrade machine from pve3 to pve4) there is the defaultcompression to "on". I have been looking at ways to optimize my node for the best performance. So I installed Proxmox "normally", i. ago. I understand Proxmox 6 now has SSD TRIM support on ZFS, so that might help. ext4 is a bit more efficient with small files as their default metadata size is slightly smaller. I only use ext4 when someone was clueless to install XFS. For large sequential reads and writes XFS is a little bit better. want to run insecure privileged LXCs you would need to bind-mount that SMB share anyway and by directly bind-mounting a ext4/xfs formated thin LV you skip that SMB overhead. If you add, or delete, a storage through Datacenter. 3. 0 ISO Installer. Proxmox VE Linux kernel with KVM and LXC support. Sure the snapshot creation and rollback ist faster with btrfs but with ext4 on lvm you have a faster filesystem. and it may be advisable to utilize ZFS for non-root directories while utilizing ext4 for the remainder of the system for optimal performance. 2. Snapraid says if the disk size is below 16TB there are no limitations, if above 16TB the parity drive has to be XFS because the parity is a single file and EXT4 has a file size limit of 16TB. Feature-for-feature, it doesn't use significantly more RAM than ext4 or NTFS or anything else does. So yes you can do it but it's not recommended and could potentially cause data loss. 0 /sec. Also consider XFS, though. Please note that XFS is a 64-bit file system. BTRFS integration is currently a technology preview in Proxmox VE. Now i noticed that my SSD shows up with 223,57GiB in size under Datacenter->pve->Disks. The EXT4 f ile system is 48-bit with a maximum file size of 1 exbibyte, depending on the host operating system. 元数据错误行为 在 ext4 中,当文件系统遇到元数据错误时您可以配置行为。默认的行为是继续操作。当 xfs. Una vez que hemos conocido las principales características de EXT4, vamos a hablar sobre Btrfs, el que se conoce como sucesor natural del sistema de archivos EXT4. 2 nvme in my r630 server. If you have a NAS or Home server, BTRFS or XFS can offer benefits but then you'll have to do some extensive reading first. 6-3. Unraid runs storage and a few media/download-related containers. By far, XFS can handle large data better than any other filesystem on this list and do it reliably too. brown2green. Ext4 and XFS are the fastest, as expected. Promox - How to extend LVM Partition VM Proxmox on the Fly. The maximum total size of a ZFS file system is exbibytes minus one byte. Btrfs trails the other options for a database in terms of latency and throughput. Two commands are needed to perform this task : # growpart /dev/sda 1. Well if you set up a pool with those disks you would have different vdev sizes and. File Systems: OpenMediaVault vs. comments sorted by Best Top New Controversial Q&A Add a Comment [deleted] • Additional comment actions. What should I pay attention regarding filesystems inside my VMs ?. I'd like to use BTRFS directly, instead of using a loop. The container has 2 disk (raw format), the rootfs and an additional mount point, both of them are in ext4, I want to format to xfs the second mount point. How do the major file systems supported by Linux differ from each other?If you will need to resize any xfs FS to a smaller size, you can do it on xfs. ZFS expects to be in total control, and will behave weird or kicks out disks if you're putting a "smart" HBA between ZFS and the disks. Last, I upload ISO image to newly created directory storage and create the VM. The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway. Hallo zusammen, ich gerade dabei einen neuen Server mit Proxmox VE 8. 2010’s Red Hat Enterprise Linux 6. The last step is to resize the file system to grow all the way to fill added space. Which file system is better XFS or Ext4? › In terms of XFS vs Ext4, XFS is superior to Ext4 in the following aspects: Larger Partition Size and File Size: Ext4 supports partition size up to 1 EiB and file size up to 16 TiB, while XFS supports partition size and file size up to 8 EiB. Buy now!The XFS File System. This is a significant difference: The Ext4 file system supports journaling, while Btrfs has a copy-on-write (CoW) feature. 1. Another advantage with ZFS storage is that you can use ZFS send/receive on a specific volume where as ZFS in dir will require a ZFS send/receive on the entire filesystem (dataset) or in worst case the entire pool. This feature allows for increased capacity and reliability. I want to convert that file system. snapshots are also missing. 10 with ext4 as main file system (FS). #1 Just picked up an Intel Coffee Lake NUC. ext4 is a filesystem - no volume management capabilities. Replication uses snapshots to minimize traffic sent over. Copied! # xfs_growfs file-system -D new-size. ZFS is supported by Proxmox itself. ZFS is supported by Proxmox itself. 1 GB/s on proxmox, 3 GB/s on hyper-v. But for spinning rust storage for data. After searching the net, seeing youtube tutorials, and reading manuals for hours - I still can not understand the difference between LVM and Directory. Btrfs is still developmental and has some deficiencies that need to be worked out - but have made a fair amount of progress. root@proxmox-ve:~# mkfs. ZFS is nice even on a single disk for its snapshots, integrity checking, compression and encryption support. Installed Proxmox PVE on the SSD, and want to use the 3x3TB disks for VM's and file storage. LVM vs. You can specify a port if your backup. ZFS, the Zettabyte file system, was developed as part of the Solaris operating system created by Sun Microsystems. mount somewhere. 2. This article here has a nice summary of ZFS's features: acohdehydrogenase • 4 yr. Reply reply Yes you have miss a lot of points: - btrfs is not integrated in the PMX web interface (for many good reasons ) - btrfs develop path is very slow with less developers compares with zfs (see yourself how many updates do you have in the last year for zfs and for btrfs) - zfs is cross platform (linux, bsd, unix) but btrfs is only running on linux. BTRFS and ZFS are metadata vs. I chose two established journaling filesystems EXT4 and XFS two modern Copy on write systems that also feature inline compression ZFS and BTRFS and as a relative benchmark for the achievable compression SquashFS with LZMA. The problem (which i understand is fairly common) is that performance of a single NVMe drive on zfs vs ext4 is atrocious. Exfat is especially recommended for usb sticks and micro/mini SD cards for any device using memory cards. B. Storage replication brings redundancy for guests using local storage and reduces migration time.