![]() You can have things like snapshoting, de-duplication, transparent compression, etc. The questions of "how much space do I have" or "how much space does this file take up" don't always have simple answers. These days, there are lots of advanced ways of saving space on filesystems. The file is said to be taking up more space than it really is. ![]() You can also do similar (but not the same) things with sparse files. NetApp leverages its enterprise-class ONTAP storage operating system. Then when you do a du, your system makes an NFS call to say "how big is this file", upon which the remote system can respond however it wants. The number of current VDI users who report that more than half of their desktop. When you run df, your system makes an NFS call to say "how big is this filesystem", in which the remote system can respond however it wants. This may seem like an oddity, but it's perfectly legal (in terms of NFS, kernel, etc). When analyzed, each snapshot looks like the same size as the original volume. So what the NetApp is likely doing is letting you access those snapshots through its /backup/.snapshot directory. But the 2 filesystems share the same data (physical volume blocks) until that data is changed on one of them. You can do this manually or with the autoshrink option of the autosize capability. Shrink the size of volume-guaranteed volumes in the aggregate. Move some volumes to another aggregate with available space. If you mount it, you've now got 2 100GB filesystems mounted. The following options are available to increase the available space in an aggregate: Add disks to the aggregate. But you can also take this snapshot and mount it up like a normal volume. Now any files (blocks really) that are modified on the logical volume are copied so that the snapshot will have access to the original data. Then you create a snapshot of that logical volume. You do some stuff, put some files on it, etc. Now you create a 100GB logical volume on that volume group. Lets say you have a 1TB physical disk with 100% of it mapped to an LVM volume group. This sounds like it's operating very similar to how Linux's LVM operates. ![]() Todays business applications are more data centric than in the past. Indicates if a span is auto-expandable: Y or N.It's been a while since I've used NetApp, and so I can't answer with absolute authority, but I can provide an explanation for this type of behavior. This best practice guide is intended for storage administrators and database. This size controls how much capacity will be allocated to a filesystem at one time. Chunks are close to, but not always exactly the same size. The guideline or approximate size of each chunk. Chunks can be allocated as needed, supporting thin provisioning, or preallocated at file system creation. When a file system is created or expanded, the server always allocates a whole number of chunks. Storage is allocated in chunks (small allocations of each stripe set, of relatively equal size) from the span (storage pool) to filesystems. Number of filesystems associated with the span. It uses the latest Brocade, Emulex, and VMware vSphere technology solutions along with NetApp all-flash storage, which sets a new standard for enterprise SAN. Note that a single set could have more than one system drive and therefore the drilldown report may return more rows than indicated by the value in this field. Percentage of the span that is used space, unallocated to filesystems. Values are stored in the database as KiB and rendered according to your user profile preferences. Number of tiers associated with the span. ![]() If storage-based mirroring is implemented, a failed secondary does not impact the good I/O health, because a span can support I/O as long as all its primaries are healthy. Yes = the server can do I/O to the filesystems on the span. Indicates if the server has I/O with the filesystems. The name that was assigned to the span when it was created. ![]()
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