why zfs is better than raid?
534056
ZFS does data checksumming, RAID controllers do not. You are protected against bit flips and other corruption with ZFS, RAID controllers only protect against entire disk failures, nothing more. ZFS will give you better performance with how the ARC works, even better than simple RAID caching.
1047267
It's not really better than a regular SSD, but it's definitely worth it just because of the no cables perk. There are cheaper drives in the M. 2 formfactor that don't have NVME.
626602
Western Digital is as good as the more popular Seagate. ... For external drives, WD is actually somewhat better in my opinion, especially if you use Linux. The power management on the Seagate drives can cause disconnections. WD has no such issues.
894017
['More Storage Space. ... ', 'Flawless Collaboration. ... ', 'Private Cloud Storage. ... ', 'Automated Data Backup. ... ', 'Data Protection. ... ', 'Simple Server Setup Procedure. ... ', 'Enjoy Your Own Media Server. ... ', 'Best Bang for Your Buck.']
533569
RAID 5 is a unique version of RAID that uses something called RAID parity. This technique uses parity information or bonus data to calculate any lost information. Parity is distributed among all drives in the RAID. RAID 5 requires roughly one free drive worth of space to store the parity.
306026
Hybrid drives are only useful because solid-state drives are still more expensive per GB. If you want both solid-state speeds and a large amount of storage space, having a hybrid drive may be simpler because the drive moves files around for you.
520566
WD Blue's primary advantages are: Higher speeds – 7200RPM makes it ideal for primary drive and gaming use. Highest density – best cost-to-performance ratio and speed, even over WD Black.
790785
RAID 1: A RAID 1 configuration is best used for situations where capacity isn't a requirement but data protection is. This set up mirrors two disks so you can have 1 drive fail and still be able to recover your data.
99706
Typically, a two bay NAS is simply one that has room for two hard drives and whilst they offer the same features to the end user who accesses the files, they usually come with built in RAID support so you can have disk redundancy / Mirroring (Raid 1) or make two drives appear to be one larger drive (Raid 0).
496465
NVMe - they have transfer rates that can be 3–5x faster than a sata based ssd. ... The world is set up for HDDs and NVMe is new(er). Other than that just performance and cost per bit. Data rates on SATA are limited, so the Flash on the other end doesn't need to be super fast to match the speed limit.
1330829
SSD RAID Rebuild Times This difference arises from the fact that SSDs offer better performance, and that means that when a disk in an SSD RAID array fails a RAID rebuild from the remaining disks can be carried out much faster than is the case with an HDD RAID array.
223084
['Reduced Storage Space.', 'Enhanced Security.', 'Improved Regulatory Compliance.', 'Easier Retrieval.', 'Better Collaboration.', 'Better Backup and Disaster Recovery.', 'And the "Intangibles"']
1163074
TL;DR. EBS volume is network attached drive which results in slow performance but data is persistent meaning even if you reboot the instance data will be there. Instance store instance store provides temporary block-level storage for your instance.
203037
In general, Ext3 or Ext4 is better if an application uses a single read/write thread and small files, while XFS shines when an application uses multiple read/write threads and bigger files.
321994
A NAS HDD is designed to run for weeks on end, while a desktop HDD can only read and write data for hours at a time. A NAS HDD is also built specifically for RAID setup. By combining multiple drives into one single logical unit, RAID configurations provide data redundancy, thus protecting data against drive failures.
911723
SSDs — solid-state drives — are much faster but can cost over 5 times more per gigabyte. By fusing the hard disk and SSD into a single volume, a Fusion Drive provides a lot more storage than an SSD with far better performance than a hard disk.
648976
GPT is better than MBR if your hard disk is larger than 2TB. Since you can only use 2TB of space from a 512B sector hard disk if you initialize it to MBR, you'd better format your disk to GPT if it is larger than 2TB.