Therefore no space is actually wasted due to having a larger chunk size than optimal. An answer here simply cannot do it justice. I typaclly use my system for gaming, internet, etc. For an excellent perspective on this, HPE (Hewlett-Packard Enterprise) has an excellent write up: Busting the Myth of Storage Block Size. If you want high data throughput from your set, choose a smaller chunk size so that data is spread across the drives and one drive can be accessing data while another is seeking the next chunk. There is poor documentation indicating if a chunk is per drive or per stripe. What sort of devices are you writing to? However, on a RAID-system with many disks - things are ofcourse different. With mirrored disk sets, choose a chunk size that matches the data you’re accessing. Mac Mini 2012 RAID 0 SSD Chunk Size. Hi , I am trying to deploy software raid setup using kickstart and was wondering if I can specify chunk-size as parameter in kickstart file.I am using RHEL 6. However, I did use tools like Sun Microsystems' Swat (Sun StorageTek Workload Analysis Tool). For each disk, click the pop-up menu in the Role column and choose “RAID slice” or “Spare” to designate the disk as a standard member or spare in the set, then click Next. Striped (RAID 0) set: A striped RAID set can speed up access to your data. What happens when writing gigabytes of data to a pipe? Since I'm feeling bored at the moment... On Tue, Apr 02, 2002 at 02:29:28PM -0800, Alvin Oga wrote: > typically a minimum of 2 disks used for raid0 or raid1... > raid1(mirroring) protects against one disk failure > ( one disk's capacity is used as a redundant copy and not for user) > ( 50% lost of space ) Correction: Protects against loss of all-but-one disks. So, for use cases such as databases and email servers, you should go for a bigger RAID chunk size, say, 64 KB or larger. What is the rationale behind GPIO pin numbering? This portable RAID solution comes in black, white, gold, gray, and silver, and features a rugged enclosure that's designed to be taken on the road with you. On RAID-5, the chunk size has the same meaning for reads as for RAID-0. In order to get the best array performance, you need to know the correct chunk size and the golden rule for choosing it: small inputs / outputs = large chunk, and large inputs / outputs = small chunk. For video editing, choose a higher chunk size. The address space of the array is conceptually divided into chunks and consecutive chunks are striped onto neighbouring devices. I didn't see any documentation for this parameter in kickstart. Nu wil ik 2, Diamondmax 9 SATA 160GB 8MB cache gaan gebruiken voor Raid 0. (See File system formats available in Disk Utility.). Can a planet have asymmetrical weather seasons? When dealing with large files, you want to distribute the workload evenly over many drives to optimize performance. One of the ways to speed up the storage for read/write operations and get better reliability is using RAID arrays. I've 4 NVMe disks that I would raid together to get an uniq AUDIO volume to load all my sample libraries from it. Basically, even a completely empty file will be the size of your allocation unit size. The first one is that RAID levels with parity, such as RAID 5 and 6, seem to favor a smaller chunk size of 64 KB. The stripe distributes data across all drives and results in an increase of speed. Even SSD disks in a RAID array can demonstrate results similar to the HDD arrays in case of using wrong RAID controller settings. This means a large chunk size to ensure that your data is contained in a single chunk that can be processed by a single disk. To get this type of analysis on the Mac, you'll definitely need something similar to assist you in analyzing how your storage is allocated. Desktops. 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