If I were you, I'd do the 2nd ... use a larger SSD (1 TB), and keep the mirror set (raid 1) for /data Walter On 26.12.2020 21:20, Nicolas Kovacs wrote:> Hi, > > My workstation is currently equipped with a pair of Western Digital Red 1 TB > SATA disks in a software RAID 1 setup. > > Some stuff like working with virtual machines is a bit slow, so I'm thinking > about replacing the disks by SSD. > > I'm hesitating between three different setups: > > 1) Use a relatively small SSD (120 to 240 GB) to reinstall the system on it. > Keep the two SATA disks in a RAID 1 array and mount /home on it. > > 2) Use a larger SSD (500 GB to 1 TB), install everything (including /home) on > it. Keep the two SATA disks in a RAID 1 array and mount them on /data for storage. > > 3) Get rid of the disks and go full SSD, with a 1 TB disk. > > Any advice from the hardware gurus on this list? >
I use 1 ssd for OS. With my own automation for deployment. And sata drives swraid5 with data partition. And cache ssd for filesystem used on a raid'ed fs and enabled compression... But you need to choose your own "freak" level, you would enjoy having on your home workstation. MOST important, you can easily reinstall and YOU have fun while just thinking you have it deployed ;) and can use any second and feel good when using it! On Sat, 26 Dec 2020, 22:26 Walter H., <Walter.H at mathemainzel.info> wrote:> If I were you, > I'd do the 2nd ... use a larger SSD (1 TB), and keep the mirror set > (raid 1) for /data > Walter > > On 26.12.2020 21:20, Nicolas Kovacs wrote: > > Hi, > > > > My workstation is currently equipped with a pair of Western Digital Red > 1 TB > > SATA disks in a software RAID 1 setup. > > > > Some stuff like working with virtual machines is a bit slow, so I'm > thinking > > about replacing the disks by SSD. > > > > I'm hesitating between three different setups: > > > > 1) Use a relatively small SSD (120 to 240 GB) to reinstall the system on > it. > > Keep the two SATA disks in a RAID 1 array and mount /home on it. > > > > 2) Use a larger SSD (500 GB to 1 TB), install everything (including > /home) on > > it. Keep the two SATA disks in a RAID 1 array and mount them on /data > for storage. > > > > 3) Get rid of the disks and go full SSD, with a 1 TB disk. > > > > Any advice from the hardware gurus on this list? > > > > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos >
If you are planning to directly replace the SATA magnetic disks with SATA SSD's then although you will reduce significantly the seek time but the bandwidth of SATA is no where near the bandwidth of NVMe. SSD's are intrinsically better than magnetic disks although magnetic disks are now available up to 20TByte in capacity. If I was you I would get a PCIe 3.0 or 4.0 2*NVMe Raid 0/1 carrier and install two SSD's on to it and mirror them. Even though SSD's are very reliable your data is more valuable. Don't go for super cheap SSD's as the write threshold will be low. I would look at Samsung for SSD's for performance or Kioxia (Toshiba) SSD's for price. As regards the carrier I would look at Sonnet or Highpoint. Bear in mind that the commercial sweet spot for SSD's is 1 or 2 TByte. Mark Woolfson -----Original Message----- From: CentOS <centos-bounces at centos.org> On Behalf Of Walter H. Sent: 26 December 2020 20:26 To: centos at centos.org Subject: Re: [CentOS] Disk choice for workstation ? If I were you, I'd do the 2nd ... use a larger SSD (1 TB), and keep the mirror set (raid 1) for /data Walter On 26.12.2020 21:20, Nicolas Kovacs wrote:> Hi, > > My workstation is currently equipped with a pair of Western Digital > Red 1 TB SATA disks in a software RAID 1 setup. > > Some stuff like working with virtual machines is a bit slow, so I'm > thinking about replacing the disks by SSD. > > I'm hesitating between three different setups: > > 1) Use a relatively small SSD (120 to 240 GB) to reinstall the system onit.> Keep the two SATA disks in a RAID 1 array and mount /home on it. > > 2) Use a larger SSD (500 GB to 1 TB), install everything (including > /home) on it. Keep the two SATA disks in a RAID 1 array and mount them on/data for storage.> > 3) Get rid of the disks and go full SSD, with a 1 TB disk. > > Any advice from the hardware gurus on this list? >_______________________________________________ CentOS mailing list CentOS at centos.org https://lists.centos.org/mailman/listinfo/centos